Campbell-scientific CR800 and CR850 Measurement and Control Systems Manual de usuario

CR800 Measurement and Control SystemRevision: 5/13 Copyright © 2000 - 2013 Campbell Scientific, Inc.

Table of Contents 107.7.3.5 Declared Sequences ... 125 7.7.3.5.1 Data Tables...

Section 7. Installation 100Selected Port. This control is disabled if the end range value is less than the begin range value. • Remove Range wil

Section 7. Installation 101• USR: Drive Size specifies the size in bytes allocated for the "USR:" ram disk drive. • RS-232 Power/Handsh

Section 7. Installation 102• Current Program displays the current program known to be running in the datalogger. This value is empty if there is

Section 7. Installation 103Careful programming is required when changing settings via CRBasic to ensure users are not inadvertently blocked from co

Section 7. Installation 104 Figure 43: "Include File" settings via DevConfig Figure 44: "Include File" settings via PakBus

Section 7. Installation 105CRBasicExample1. Usingan"IncludeFile"toControlSW12'Assumes that the Include file in CRBasic exa

Section 7. Installation 106CRBasicExample3. SimpleDefault.cr8File'This default.cr8 file controls the SW12 switched power terminal Begi

Section 7. Installation 1077.6.3.5 Network Planner Figure 45: Network Planner Setup 7.6.3.5.1 Overview Network Planner allows the user to: • cre

Section 7. Installation 108For more detailed information on Network Planner, please consult the LoggerNet manual, which is available at www.campb

Section 7. Installation 109sensors and external devices. Quickstart Tutorial (p. 33) works through a measurement example using Short Cut. For many

Table of Contents 117.8.2.9 Micro-Serial Server... 173 7.8.2.10 Modbus TCP/IP...

Section 7. Installation 110 CRBasicExample4. InsertingComments'Declaration of variables starts here. Public Start(6)

Section 7. Installation 111 Table 6. Program Send Options that Reset Memory* LoggerNet | Connect | Program Send PC400 | Clock/Program | Send Progr

Section 7. Installation 1127.7.3 Syntax 7.7.3.1 Numerical Formats Four numerical formats are supported by CRBasic. Most common is the use of base

Section 7. Installation 1137.7.3.2 Structure Table CRBasic Program Structure (p. 113) delineates CRBasic program structure. CRBasic example Progra

Section 7. Installation 114  CRBasicExample6. ProperProgramStructure'Declarations 'Define Constants Const RevDiff = 1 C

Section 7. Installation 1157.7.3.3 Command Line CRBasic programs are made up of a series of statements. Each statement normally occupies one line

Section 7. Installation 1167.7.3.4 Single-Line Declarations Public, Dim, and ReadOnly variables are declared at the beginning of a CRBasic progra

Section 7. Installation 117simply declare a variable array as shown below: Public TempC(4), This creates in memory the four variables TempC(1), Tem

Section 7. Installation 118 CRBasicExample8. UsingVariableArrayDimensionIndicesDim aaa As Long Dim bbb As Long Dim ccc As Long Public Var

Section 7. Installation 119 Table 10. Data Types Name: Command or Argument Description / Word Size Where Used Notes Resolution / Range FP2 Campb

Table of Contents 127.8.13.8 Formatting String Hexadecimal Variables... 241 7.8.14 Data Tables...

Section 7. Installation 120Table 10. Data Types Name: Command or Argument Description / Word Size Where Used Notes Resolution / Range As Boolea

Section 7. Installation 121 DataTable(TableName,True,-1) 'FP2 Data Storage Example Sample(1,Z,FP2) 'IEEE4 / Float Data Storage Exa

Section 7. Installation 122Variable Initialization By default, variables are set equal to zero at the time the datalogger program compiles. Vari

Section 7. Installation 123 CRBasicExample12. UsingtheConstDeclarationPublic PTempC, PTempF Const CtoF_Mult = 1.8 Const CtoF_Offset = 32 B

Section 7. Installation 124Table 11. Predefined Constants and Reserved Words mv50cR mv500c mv7_5 mv7_5c mvX10500 mv50R NSEC PROG SCAN mvX1500

Section 7. Installation 125 CRBasicExample13. Foreign‐LanguageSupport‘Declare a constant to concatenate six non-English characters Const PTem

Section 7. Installation 126• name of the CRBasic program running in the datalogger • name of the data table (limited to 20 characters) • alpha

Section 7. Installation 127 Table 13. Typical Data Table TOA5 CR800 CR800 1048 CR800.Std.13.06 CPU:Data.cr8 35723 OneMin TIMESTAMP RECORD

Section 7. Installation 128'Define Data Tables DataTable(OneMin,True,-1) DataInterval(0,1,Min,10) Average(1,Batt_Volt,FP2,False) Avera

Section 7. Installation 129• Size-Table size is the number of records to store in a table before new data begins overwriting old data. If "10

Table of Contents 138.1.5.1.1 High-frequency Pulse (P1 - P2)... 300 8.1.5.1.2 Low-Level ac (P1 - P2) ...

Section 7. Installation 130If a program is planned to experience multiple lapses, and if telecommunications bandwidth is not a consideration, the

Section 7. Installation 131Consider the Average() instruction as an example of output processing instructions. Average() stores the average of a va

Section 7. Installation 132the order calls are received. This may cause unexpected pauses in the conflicting program sequences. 7.7.3.5.3 Incide

Section 7. Installation 133datalogger, which is displayed by the support software. The CRBasic Editor pre-compiler returns a similar message. Note

Section 7. Installation 134the back of the queue, and the next task in the queue begins running. In this way, all tasks are given equal processin

Section 7. Installation 135A similar concern is the reuse of the same variable in multiple tasks. Without some sort of messaging between the two t

Section 7. Installation 136CR800 clock. Scan() parameters allow modification of the period in 10- ms increments. As shown in CRBasic example Begi

Section 7. Installation 137splicing, measurements in a slow sequence may span across multiple-scan intervals in the main program. When no measureme

Section 7. Installation 138semaphore before measurements in a calibration or slow-sequence scan. The semaphore is taken by the main scan at its b

Section 7. Installation 139 Figure 47: Sequential-mode scan priority flow diagrams 7.7.3.8 Instructions In addition to BASIC syntax, additional i

Table of Contents 148.4 Telecommunications and Data Retrieval... 332 8.4.1 Hardware and Carrier Signal

Section 7. Installation 140PanelTemp is the keyword. Two parameters follow: Dest, a destination variable name in which the temperature value is s

Section 7. Installation 141Table 18. Rules for Names Name Category1 Maximum Length (number of characters) Allowed characters Data-table name 20

Section 7. Installation 142 CRBasicExample19. UseofArraysasMultipliersandOffsetsPublic Pressure(3), Mult(3), Offset(3) DataTable(AvgP

Section 7. Installation 1437.7.3.9.1 Floating-Point Arithmetic Variables and calculations are performed internally in single precision IEEE four-by

Section 7. Installation 144 CRBasicExample20. ConversionofFLOAT/LONGtoBooleanPublic Fa As Float Public Fb As Float Public L As Long Pu

Section 7. Installation 145Constants Conversion Constants are not declared with a data type, so the CR800 assigns the data type as needed. If a con

Section 7. Installation 146The CR800 is able to translate the conditions listed in table Binary Conditions of TRUE and FALSE (p. 146) to binary f

Section 7. Installation 147 Table 20. Logical Expression Examples If X >= 5 then Y = 0 Sets the variable Y to 0 if the expression "X >=

Section 7. Installation 148 CRBasicExample23. StringandVariableConcatenation'Declare Variables Dim Wrd(8) As String * 10 Public Phra

Section 7. Installation 149• Prc is the abbreviation of the name of the data process used. See table Abbreviations of Names of Data Processes (p.

Table of Contents 158.6.3.6 Clock Functions ... 370 8.6.3.6.1 ClockSet Command...

Section 7. Installation 150Seven special variable names are used to access information about a table: • EventCount • EventEnd • Output • Reco

Section 7. Installation 151 CRBasicExample24. UseofVariableArraystoConserveCodeSpaceFor I = 1 to 20 TCTemp(I) = TCTemp(I) * 1.8 + 32

Section 7. Installation 152calibration with new multiplier and offset factors. Only if the user creates a data-storage output table with the Sam

Section 7. Installation 153topics. The most comprehensive resource to date covering use of FieldCal() and FieldCalStrain() is RTDAQ software docume

Section 7. Installation 1548. Set Mode = 4 to start second part of calibration. a. Mode = 5 (automatic) during second point calibration. b

Section 7. Installation 1551. Send CRBasic example FieldCal Zeroing Demonstration Program (p. 155) to the CR800. An excitation channel has been p

Section 7. Installation 156 Scan(100,mSec,0,0) 'Simulate measurement by exciting channel VX1/EX1 ExciteV(Vx1,mV,0) 'Make

Section 7. Installation 157CRBasicExample27. FieldCal()OffsetDemoProgram'Jumper VX1/EX1 to SE6(3L) to simulate a sensor Public mV

Section 7. Installation 158K=temperaturecorrectioncoefficient(‐0.04PSI/C°istypical)T0=rtemperatureatthezerostateT1=tempera

Section 7. Installation 159Public Offset(3) Alias Offset(1) = Digits_Offset Alias Offset(2) = Temp_Offset Alias Offset(3) = BP_Offset Public LoadR

Table of Contents 1610.4.1 RS-232... 411 10.4.2 Communicating w

Section 7. Installation 1601. Send the program in CRBasic example FieldCal Multiplier and Offset Demonstration Program (p. 160) to the CR800. 2.

Section 7. Installation 161 Scan(100,mSec,0,0) 'Simulate measurement by exciting channel VX1/EX1 ExciteV(Vx1,SignalmV,0) 'M

Section 7. Installation 162'Data Storage Output of Calibration Data ─ stored whenever a calibration occurs DataTable(CalHist,NewFieldCal,200

Section 7. Installation 163FieldCalStrain() uses the known value of the shunt resistor to adjust the gain (multiplier / span) to compensate. The g

Section 7. Installation 164 Figure 49: Quarter-bridge strain-gage schematic with RC-resistor shunt CRBasicExample31. FieldCalStrain()Calib

Section 7. Installation 165'//////////////////////////// PROGRAM //////////////////////////// BeginProg 'Set Gage Factors GF_Raw = 2

Section 7. Installation 166 Figure 50: Strain-gage shunt calibration started Figure 51: Strain-gage shunt calibration finished 7.8.1.6.2 Quar

Section 7. Installation 167 Figure 53: Zero procedure finished 7.8.2 Information Services Support of information services (FTP, HTTP, XML, POP3,

Section 7. Installation 168• DHCP client to obtain an IP address • DNS client to query a DNS server to map a name into an IP address • SMTP to

Section 7. Installation 169 Figure 54: Preconfigured HTML Home Page 7.8.2.3 Custom HTTP Web Server Although the default home page cannot be acces

Table of Contents 17A.6.4 Compound-assignment operators ... 472 A.6.5 Logical Operators ...

Section 7. Installation 170 Figure 55: Home page created using WebPageBegin() instruction Figure 56: Customized numeric-monitor web page 

Section 7. Installation 171 CRBasicExample32. HTML'NOTE: Lines ending with "+" are wrapped to the next line to fit on the printe

Section 7. Installation 172BeginProg Scan(1,Sec,3,0) PanelTemp(RefTemp,250) RealTime(Time()) Minutes = FormatFloat(Time(5),"%0

Section 7. Installation 173 7.8.2.9 Micro-Serial Server The CR800 can be configured to allow serial communication over a TCP/IP port. This is usefu

Section 7. Installation 174• Programmed mode automates much of the SDI-12 protocol and provides for data recording. 7.8.3.1 SDI-12 Transparent

Section 7. Installation 175 7.8.3.1.1 SDI-12 Transparent Mode Commands Commands have three components: Sensoraddress(a)–asinglecharacter,and

Section 7. Installation 176Table 25. Standard SDI-12 Command and Response Set Command Name Command Syntax1 Response2 Start Concurrent Measurement

Section 7. Installation 177Serial number = 101 Start Measurement Commands (aM! & aC!) A measurement is initiated with M! or C! commands. The

Section 7. Installation 178Send Data Commands (aD0! to aD9!) These commands requests data from the sensor. They are normally issued automaticall

Section 7. Installation 179instruction parameter), the CR800 issues the aM! AND aD0! commands with proper elapsed time between the two. The CR800

Table of Contents 18F.2.5 Passive Signal Conditioners ... 539 F.2.5.1 Resistive Bridge TIM Mod

Section 7. Installation 180Alternate Start Measurement Command (Cv) The SDIRecorder() aCv (not C!) command facilitates using the SDI-12 standard

Section 7. Installation 181 SDI12Recorder(Temp(3),1,2,"M!",1.0,0) SDI12Recorder(Temp(4),1,3,"M!",1.0,0) NextScan

Section 7. Installation 182 CRBasicExample33. UsingAlternateConcurrentCommand(aC)'Code to use when back to back SDI-12 concurrent m

Section 7. Installation 183 Else 'C!/C command sequence complete Move(Temp_Meas(X),1,Temp_Tmp(X),1) 'Copy measurements t

Section 7. Installation 184 SlowSequence Do 'Note SDI12SensorSetup / SDI12SensorResponse must be renewed 'after each s

Section 7. Installation 185 CRBasicExample35. UsinganSDI‐12ExtendedCommand'SDI-12 extended command "XT23.61!" sent to CH200

Section 7. Installation 186 CRBasicExample36. SDI‐12SensorSetupPublic PTemp, batt_volt Public Source(10) BeginProg Scan(5,Sec,0,0)

Section 7. Installation 187Example: Probe: Water Content Power Usage: • Quiescent: 0.25 mA • Measurement: 120 mA • Measurement Time: 15 s • Act

Section 7. Installation 188 7.8.4 Subroutines A subroutine is a group of programming instructions that is called by, but runs outside of, the mai

Section 7. Installation 189 CRBasicExample37. SubroutinewithGlobalandLocalVariables'Global variables are those declared anywhere in

Table of Contents 19Figure 19: PC200W Connect button ... 51 Figure 20: PC200W Monitor Data t

Section 7. Installation 1907.8.5.1 OutputOpt Parameters In the CR800 WindVector() instruction, the OutputOpt parameter defines the processed data

Section 7. Installation 191often included to zero the measurement when it equals the offset so that WindVector() can reject measurements when wind

Section 7. Installation 192 Figure 58: Mean wind-vector graph where for polar sensors: or, in the case of orthogonal sensors: Resultant mea

Section 7. Installation 193Standard Deviation of Direction Figure 59: Standard Deviation of Direction The Taylor Series for the Cosine function, t

Section 7. Installation 194and have never been greater than a few degrees. The final form is arrived at by converting from radians to degrees (5

Section 7. Installation 195SubMenu() / EndSubMenu Definesthebeginningandendofasecond‐levelmenu.Note SubMenu() label must be at least 6 ch

Section 7. Installation 196 Figure 63: Custom menu example — Predefined-notes pick list Figure 64: Custom menu example — Free-Entry notes wind

Section 7. Installation 197 Figure 67: Custom menu example — control-LED pick list Figure 68: Custom menu example — control-LED Boolean pick lis

Section 7. Installation 198Const Off = false 'Assign "Off" as Boolean False Public StartFlag As Boolea

Section 7. Installation 199 'Measure Two Thermocouples TCDiff(TCTemp(),2,mV2500C,1,TypeT,RefT

Table of Contents 20Figure 75: Data from TrigVar program... 224 Figure 76: Alarms toggled in bi

Section 7. Installation 200Note Do not confuse CRBasic files with .DLD extensions with files of .DLD type used by legacy Campbell Scientific dat

Section 7. Installation 201#ElseIf LoggerType = CR800 Const SourcSerialPort = Com1 #Else Const SourcSerialPort = Com1 #EndIf 'Public Vari

Section 7. Installation 2027.8.8.1 Introduction Serial denotes transmission of bits (1s and 0s) sequentially, or "serially." A byte is

Section 7. Installation 2037.8.8.2 I/O Ports The CR800 supports two-way serial communication with other instruments through ports listed in table C

Section 7. Installation 204addressing systems that allow multiplexing of several sensors on a single communications port, which makes for more ef

Section 7. Installation 205+3to+25with‐3to+3definedasthetransitionrangethatcontainsnoinformation.Amarkisalogic1andnegative

Section 7. Installation 206useful when using the CS I/O and RS-232 ports since it allows ports to be simultaneously used for sensor and PC teleco

Section 7. Installation 207SerialOutBlock()1,3 • Binary • Can run in pipeline mode inside the digital measurement task (along with SDM instructio

Section 7. Installation 208• Will the sensor be sending multiple data strings? Multiple strings usually require filtering before parsing. • How

Section 7. Installation 2091. Open a serial port (SerialOpen() command) to configure it for communications. • Parameters are set according to the

Table of Contents 21Figure 130: Accuracy, Precision, and Resolution ... 449 List of Tables Table 1. Single-Ended a

Section 7. Installation 21017889 ppmV pw=17.81 hPa pws 29.43 hPa h= 52.3 kJ/kg dT= 8.1 °C" • Hex Pairs: Bytes are translated to hex pa

Section 7. Installation 211the sensor sends multiple strings at once, consider declaring a single string variable and read incoming strings one at

Section 7. Installation 212 Scan(5,Sec, 3, 0) 'Serial Out Code 'Transmits string "*27.435,56.789#" out COM1 Ser

Section 7. Installation 213 Figure 69: HyperTerminal New Connection description Figure 70: HyperTerminal Connect-To settings

Section 7. Installation 214 Figure 71: HyperTerminal COM-Port Settings Tab Click File | Properties | Settings | ASCII Setup... and set as shown.

Section 7. Installation 2157.8.8.6.2 Create Send Text File Create a file from which to send a serial string. The file shown in figure HyperTerminal

Section 7. Installation 216programming to output and accept these same ASCII strings. A similar program can be used to emulate CR10X and CR23X d

Section 7. Installation 217'One Minute Data Table DataTable(OneMinTable,true,-1) OpenInterval 'sets interval same as foun

Section 7. Installation 218 'If it is a leap year, use this section. If (LeapYear = True) Then Select Case DOY Case Is < 32

Section 7. Installation 219 Case Is < 121 Month = 4 Date = DOY + -90 Case Is < 152 Month = 5 Date

Table of Contents 22Table 51. CRBasic Parameters Varying Measurement Sequence and Timing...

Section 7. Installation 220 '///////////////Serial Time Set Input Section/////////////// 'Accept old C command -- [2008:028:10:3

Section 7. Installation 2217.8.8.7 Q & A Q: I am writing a CR800 program to transmit a serial command that contains a null character. The stri

Section 7. Installation 222then TempData(1,1,2) = "TOP", TempData(1,1,3) = "OP", _ TempData(1,1,1) = "STOP" To ha

Section 7. Installation 223A: A common caution is, “The destination variable should not be used in more than one sequence to avoid using the variab

Section 7. Installation 224 Figure 75: Data from TrigVar program CRBasicExample42. UsingTrigVartoTriggerDataStorage'In this exam

Section 7. Installation 225• Placing a time stamp in a second position in a record. • Accessing a time stamp from a data table and subsequently s

Section 7. Installation 226'Program BeginProg Scan(1,Sec,0,0) TimeVar = FirstTable.TimeStamp CallTable FirstTable CallTable Se

Section 7. Installation 227'Declarations Public rTime(9) As Long '(or Float) Public rTime2(7) As Long

Section 7. Installation 228 '3) sample time to three string forms using the TableName.FieldName notation. 'Form 1: "mm/dd/y

Section 7. Installation 229Variable aliasing (p. 124) can be employed in the CRBasic program to make the data more understandable. Figure 76: Al

Table of Contents 23Table 103. Special Keyboard-Display Key Functions ... 383 Table 104. Typical Gzip File Compression Re

Section 7. Installation 230 Figure 78: Bool8 data from bit-shift example (PC data file) CRBasicExample47. ProgrammingwithBool8andabit‐

Section 7. Installation 231 'If bit in OR bit in The result 'Flags Is Bin/Hex Is Is '---------- ---------

Section 7. Installation 232 FlagsBool8(1) = Flags AND &HFF 'AND 1st 8 bits of "Flags" & 11111111 FlagsBo

Section 7. Installation 233 Table 32. TABLE. Summary of Analog Voltage Measurement Rates Maximum Rate 100 Hz 600 Hz 2000 Hz Number of Simultane

Section 7. Installation 234 BeginProg Scan(1,Sec,0,0)'<<<<Measurement rate is determined by Interval and Units VoltSe(Fast

Section 7. Installation 235Many variations of this 200-Hz measurement program are possible to achieve other burst rates and duty cycles. The SubSca

Section 7. Installation 236• One more way to view sub-scans is that they are a convenient (and only) way to put a loop around a set of measureme

Section 7. Installation 237 200 Table 37. Parameters for Analog Burst Mode (601 to 2000 Hz) CRBasic Analog Voltage Input Parameters Description whe

Section 7. Installation 2387.8.13.1 String Operators The table String Operators (p. 238) list and describes available string operators. String o

Section 7. Installation 2397.8.13.2 String Concatenation Concatenation is the building of strings from other strings ("abc123"), characte

Table of Contents 24Table 156. LoggerNet Adjuncts and Clients1,2... 1258H548 286HTable 157. Software Tools

Section 7. Installation 240Some smart sensors send strings containing NULL characters. To manipulate a string that has NULL characters within it

Section 7. Installation 2417.8.13.7 Formatting Strings Table 43. Formatting Strings Examples Expression Result Str(1)=123e4 Str(2)=FormatFloat(123

Section 7. Installation 242'Data Tables 'Table output on two intervals depending on condition. 'note the parenthesis around the Tr

Section 7. Installation 243scan times, two separate scans can be used with logic to jump between them. If a PulseCount() is used in both scans, th

Section 7. Installation 244 'function Scan(1,Sec,0,0) ProgSig = Status.ProgSignature

Section 7. Installation 245'Declare Public (viewable) Variables Public Batt_Volt As FLOAT 'Declared as Float Publi

Section 7. Installation 246 Minimum(1,AirTemp_C,FP2,0,False) 'Stores temperature minimum in low

Section 7. Installation 247 'Count how many times the DataEvent “DeltaT_C>=3” has occurred. The 'TableName.EventCount syntax i

Section 7. Installation 248'Main Program BeginProg 'Begin executable section of program Scan(1,Sec

Section 7. Installation 249'Declare Variables Public PTemp, Batt_Volt, Level, TimeIntoTest Public Counter(10) Public Flag(8) As Boolean &apos

Table of Contents 25CRBasic Example 49. Formatting Strings ... 241 CRBasic Example 50. Two Data Interva

Section 7. Installation 250 '1 Minute Data Interval Scan(1,Min,0,70) Counter(4) = Counter(4) + 1 Battery(Batt_volt)

Section 7. Installation 251 '10 Minute Data Interval Scan(10,Min,0,0) Counter(6) = Counter(6) + 1 Battery(Batt_volt)

Section 7. Installation 252'Begin Program BeginProg 'Load scaling array (multipliers and offsets) Mult(1) = 1.8 : Offset(1) = 32

Section 7. Installation 253'Declare Units Units PTemp_C = deg C Units AirTemp_C = deg C Units DeltaT_C = deg C 'Declare Output Table --

Section 7. Installation 254'Declare Event Driven Data Table DataTable(Event,True,1000) DataEvent(0,DeltaT_C>=3,DeltaT_C<3,0) Sampl

Section 7. Installation 255non-standard types. Measured temperatures are compared against the ITS-90 scale, a temperature instrumentation-calibrati

Section 7. Installation 256Table 45. PRTCalc() Type-Code-1 Sensor IEC 60751:2008 (IEC 751), alpha = 0.00385. Now internationally adopted and wri

Section 7. Installation 257Table 47. PRTCalc() Type-Code-3 Sensor US Industrial Standard, alpha = 0.00391 (Reference: OMIL R84 (2003)) Constant Coe

Section 7. Installation 258 Table 50. PRTCalc() Type-Code-6 Sensor Standard ITS-90 SPRT, alpha = 0.003926 (Reference: Minco / Instrunet) Constant

Section 7. Installation 259Figure PT100 in Four-Wire Half-Bridge (p. 260) shows the circuit used to measure a 100-Ω PRT. The 10-kΩ resistor allows

Table of Contents 26

Section 7. Installation 260A terminal-input module (TIM) can be used to complete the circuit shown in figure PT100 in Four-Wire Half-Bridge (p. 2

Section 7. Installation 261Example PRT specifications: • Alpha = 0.00385 (PRTType 1) The temperature measurement requirements in this example are

Section 7. Installation 262 CRBasicExample60. PT100inThree‐wireHalf‐bridge'See FIGURE. PT100 in Three-Wire Half-Bridge (p. 261) for

Section 7. Installation 263where X'=X/1000+R3/(R2+R3)Thus, to obtain the value RS/R0, (R0 = RS @ 0°C) for the temperature calculating i

Section 7. Installation 264 CRBasicExample61. PT100inFour‐WireFull‐Bridge'See FIGURE. PT100 in Four-Wire Full-Bridge (p. 263) for wir

Section 7. Installation 265 Figure Running-Average Frequency Response (p. 266) is a graph of signal attenuation plotted against signal frequency no

Section 7. Installation 266Therecordedamplitudeforthisexampleshouldbeabout1/3oftheinput‐signalamplitude.Aprogramwaswrittenwith

Section 7. Installation 267 Figure 84: Running-average signal attenuation

Section 7. Installation 268

269Section 8. Operation 8.1 Measurements Several features give the CR800 the flexibility to measure many sensor types. Contact a Campbell Scienti

27Section 1. Introduction 1.1 HELLO Whether in extreme cold in Antarctica, scorching heat in Death Valley, salt spray from the Pacific, micro-grav

Section 8. Operation 270basic code requirements. The DataTime() instruction is a more recent introduction that facilitates time stamping with sys

Section 8. Operation 271instructions BrFull(), BrFull6W(), BrHalf4W(), TCDiff(), and VoltDiff () instructions perform DIFF voltage measurements.

Section 8. Operation 272is reduced to ±2.5 Vdc, whereas input limits are always ±5 Vdc. Hence for non-negligible DIFF signals, "input limits

Section 8. Operation 273Sensors with a low signal-to-noise ratio, such as thermocouples, should normally be measured differentially. However, if th

Section 8. Operation 274 Table 51. CRBasic Parameters Varying Measurement Sequence and Timing CRBasic Parameter Description MeasOfs Correct gro

Section 8. Operation 275where GainError=±(2500*0.0006)=±1.5mVand OffsetError=1.5•667µV+1µV=1.00mVTherefore, Error=GainEr

Section 8. Operation 2768.1.2.5 Voltage Range In general, a voltage measurement should use the smallest fixed-input range that will accommodate t

Section 8. Operation 2778.1.2.5.2 Fixed Voltage Ranges An approximate 9% range overhead exists on fixed input voltage ranges. For example, over-ran

Section 8. Operation 2788.1.2.6 Offset Voltage Compensation Analog measurement circuitry in the CR800 may introduce a small offset voltage to a m

Section 8. Operation 279When the CR800 reverses differential inputs or excitation polarity, it delays the same settling time after the reversal as

Section 1. Introduction 28Italic — titles of publications, software, sections, tables, figures, and examples. Bold italic — CRBasic instruction p

Section 8. Operation 280duration. Consequently, noise at 1 / (integer multiples) of the integration duration is effectively rejected by an analog

Section 8. Operation 281 Figure 88: Ac power line noise rejection techniques ac Noise Rejection on Large Signals If rejecting ac-line noise when

Section 8. Operation 282Table 56. ac Noise Rejection on Large Signals 2. During A/D, CR800 turns off excitation for ≈170 µs. 3. Excitation is sw

Section 8. Operation 283 Table 57. CRBasic Measurement Settling Times Settling Time Entry Input Voltage Range Integration Code Settling Time1 0

Section 8. Operation 284steady-state conditions so changes in measured voltage are attributable to settling time rather than changes in pressure.

Section 8. Operation 285 Figure 90: Settling time for pressure transducer Table 58. First Six Values of Settling-Time Data TIMESTAMP REC PT(1) P

Section 8. Operation 286Unless a Calibrate() instruction is present in the running CRBasic program, the CR800 automatically performs self-calibra

Section 8. Operation 287measurements (B) to be determined during CR800 self-calibration (maximum of 54 values). These values can be viewed in the

Section 8. Operation 288Table 59. Status Table Calibration Entries Descriptions of Status Table Elements Status Table Element Differential (Diff)

Section 8. Operation 289Table 59. Status Table Calibration Entries Descriptions of Status Table Elements Status Table Element Differential (Diff) S

29Section 2. Cautionary Statements The CR800 is a rugged instrument and will give years of reliable service if a few precautions are observed: •

Section 8. Operation 290Table 60. Calibrate() Instruction Results Descriptions of Array Elements Array Cal() Element Differential (Diff) Single-E

Section 8. Operation 2911A/D (analog-to-digital) conversion time = 15 µs 2Reps/No Reps -- If Reps > 1 (i.e., multiple measurements by a single i

Section 8. Operation 292 Table 61. Resistive-Bridge Circuits with Voltage Excitation Resistive-Bridge Type and Circuit Diagram CRBasic Instructi

Section 8. Operation 293Table 61. Resistive-Bridge Circuits with Voltage Excitation Resistive-Bridge Type and Circuit Diagram CRBasic Instruction a

Section 8. Operation 294Other sensors, e.g., LVDTs (linear variable differential transformers), require an ac excitation because they rely on ind

Section 8. Operation 295• Effects due to the following are not included in the specification: o Bridge-resistor errors o Sensor noise o Measure

Section 8. Operation 2968.1.3.3 Strain Calculations Read More! The FieldCalStrain() Demonstration Program (p. 154) section has more information o

Section 8. Operation 297Table 63. StrainCalc() Instruction Equations StrainCalc() BrConfig Code Configuration 6 Full-bridge strain gage. Half the

Section 8. Operation 298instruction. PulseCount() instruction functions include returning counts or frequency on frequency or switch-closure sig

Section 8. Operation 299 Table 64. Pulse-Input Channels and Measurements Pulse-Input Channel Input Type Data Option CRBasic Instruction P1, P2 •

Warranty The CR800 Measurement and Control Datalogger is warranted for three (3) years subject to this limited warranty: “PRODUCTS MANUFACTURED BY

Section 2. Cautionary Statements 30 

Section 8. Operation 300 Figure 94: Pulse-input channels 8.1.5.1.1 High-frequency Pulse (P1 - P2) High-frequency pulse inputs are routed to an

Section 8. Operation 3018.1.5.2 Pulse Input on Digital I/O Channels C1 - C4 Digital I/O channels C1 – C4 can be used to measure pulse inputs betwee

Section 8. Operation 3028.1.5.2.2 Low-Frequency Mode Low-frequency mode enables edge timing and measurement of period (not period averaging) and

Section 8. Operation 303 Figure 95: Connecting switch closures to digital I/O Using a pull-up resistor on digital I/O channels C1 - C4 8.1.5.3.1

Section 8. Operation 304R=TimingresolutionoftheTimerIO()measurement=P=Periodofinputsignal(seconds).Forexample,P=1/1000

Section 8. Operation 305frequency is not varying over the execution interval. The calculation returns the average regardless of how the signal is

Section 8. Operation 306Table 68. Time Constants (τ) Measurement τ Pulse channel, low-level ac mode See table Filter Attenuation of Frequency Si

Section 8. Operation 3078.1.5.4.3 Switch Bounce and NAN NAN will be the result of a TimerIO() measurement if one of two conditions occurs: 1. timeo

Section 8. Operation 308 Figure 97: Input conditioning circuit for period averaging 8.1.7 SDI-12 Recording Read More! SDI-12 Sensor Support (p.

Section 8. Operation 309 Figure 98: Circuit to limit control port input to 5 Vdc 8.1.9 Field Calibration Read More! Field Calibration of Linear S

31Section 3. Initial Inspection • The CR800 datalogger ship with, o 1 each pn 8125 small, flat-bladed screwdriver o 1 each pn 1113 large, flat-

Section 8. Operation 310 8.1.10.3 RS-232 Sensors RS-232 sensor cable lengths should be limited to 50 feet. 8.1.10.4 SDI-12 Sensors The SDI-12 st

Section 8. Operation 311which is the resolution used by PakBus clock-sync functions. In networks without routers, repeaters, or retries, the commu

Section 8. Operation 3128.2.1 Analog-Input Expansion Modules Mechanical relay and solid-state relay multiplexers are available to expand the numb

Section 8. Operation 313 Figure 100: Control port current sourcing 8.2.4.2 Relays and Relay Drivers Several relay drivers are manufactured by Cam

Section 8. Operation 314 Figure 101: Relay driver circuit with relay Figure 102: Power switching without relay 8.2.5 Analog Control / Output

Section 8. Operation 3158.2.6 TIMs Terminal Input Modules (TIMs) are devices that provide simple measurement-support circuits in a convenient packa

Section 8. Operation 316 Table 70. CR800 Memory Allocation Memory Sector Comments Internal battery-backed SRAM1 4 MB* See table CR800 SRAM

Section 8. Operation 317 Table 71. CR800 SRAM Memory Use Comments Static Memory Operational memory used by the operating system regardless

Section 8. Operation 3188.3.1.1 Data Storage Data-storage drives are listed in table CR800 Memory Drives (p. 318). Data-table SRAM and the CPU:

Section 8. Operation 319size of USR: is the total RAM size less 400 kB; i.e., for a CR800 with 4-MB memory, the maximum size of USR: is about 3.6 M

Section 3. Initial Inspection 32 

Section 8. Operation 320Instruction Data-File Formats (p. 320) lists available formats. For a format to be compatible with datalogger support so

Section 8. Operation 321Data-File Format Examples TOB1 TOB1filesmaycontainanASCIIheaderandbinarydata.Thelastlineintheexamplecontai

Section 8. Operation 322CSIJSON CSIJSONfilescontainheaderinformationanddatainaJSONformat.Example:"signature": 38611,"e

Section 8. Operation 323emptystring.TherewillbeonedescriptorforeachfieldnamegivenonHeaderLine2.Record Element 1 – Timestamp Dataw

Section 8. Operation 324• Restores settings to default. • Initializes system variables. • Clears communications memory. Operating systems can

Section 8. Operation 325Table 74. File-Control Functions File-Control Functions Accessed Through Setting program file attributes. See File Attribu

Section 8. Operation 3268.3.4.1 File Attributes A feature of program files is the file attribute. Table CR800 File Attributes (p. 326) lists avai

Section 8. Operation 327 Table 76. Data-Preserve Options if "Preserve data if no table changed" if current program = overwritten pro

Section 8. Operation 328• Formatting memory drives. • Deleting data files associated with the previously running program. Note Back in the old

Section 8. Operation 329• File = accompanying operating system or user program file. Name can be up to 22 characters long. • Device: the CR800 m

33Section 4. Quickstart Tutorial This tutorial presents an introduction to CR800 data acquisition. 4.1 Primer – CR800 Data-Acquisition Data acqui

Section 8. Operation 330Example Power-up.ini Files Powerup.ini Example 'Code format and syntax 'Command = numeric power-up command &a

Section 8. Operation 3318.3.5 File Names The maximum size of the file name that can be stored, run as a program, or FTP transferred in the CR800 is

Section 8. Operation 332Table 78. File System Error Codes Error Code Description 25 Access to uninitialized ram drive 26 Attempted rename across

Section 8. Operation 3338.4.1 Hardware and Carrier Signal Campbell Scientific supplies or recommends a wide range of telecommunications hardware.

Section 8. Operation 334allows multiple PCs to communicate with the CR800 simultaneously when proper telecommunications networks are installed. T

Section 8. Operation 3358.5.1 PakBus Addresses CR800s are assigned PakBus® address 1 as a factory default. Networks with more than a few stations s

Section 8. Operation 336 Figure 103: PakBus network addressing LoggerNet is configured by default as a router and can route datalogger- to-datal

Section 8. Operation 337Table 80. PakBus Leaf-Node and Router Device Configuration Network Device Description PakBus Leaf Node PakBus Router PakBus

Section 8. Operation 3388.5.3.3 Hello-request (one-way broadcast) All nodes hearing a hello-request broadcast (existing and potential neighbors)

Section 8. Operation 3398.5.4 PakBus Troubleshooting Various tools and methods have been developed to assist in troubleshooting PakBus® networks.

Section 4. Quickstart Tutorial 34modems, radios, satellite transceivers, and TCP/IP network modems are available for the most demanding applicati

Section 8. Operation 340than one hop away. Table PakBus Link-Performance Gage (p. 340) provides a link-performance gage. Table 81. PakBus Link-

Section 8. Operation 3418.5.6 PakBus LAN Example To demonstrate PakBus® networking, a small LAN (Local Area Network) of CR800s can be configured as

Section 8. Operation 3428.5.6.2 LAN Setup Configure CR800s before connecting them to the LAN: 1. Start Device Configuration Utility (DevConfig).

Section 8. Operation 343 Figure 108: DevConfig Deployment | ComPorts Settings tab Figure 109: DevConfig Deployment | Advanced tab

Section 8. Operation 344 Table 82. PakBus-LAN Example Datalogger-Communications Settings Software→ Device Configuration Utility (DevConfig) Tab

Section 8. Operation 345 Figure 111: LoggerNet Network-Map Setup: PakBusPort As shown in figure LoggerNet Device Map Setup: PakBusPort (p. 345),

Section 8. Operation 346 As shown in figure LoggerNet Device-Map Setup: Dataloggers (p. 345), set the PakBus® address for each CR800 as listed in

Section 8. Operation 347Note Setting the encryption key for a PakBus port device will force all messages it sends to use encryption. 8.6 Alterna

Section 8. Operation 348 Table 83. DNP3 Implementation — Data Types Required to Store Data in Public Tables for Object Groups Data Type Group D

Section 8. Operation 349SyntaxDNPUpdate (DNPSlaveAddr,DNPMasterAddr) 8.6.1.2.3 Programming for Data-Acquisition As shown in CRBasic example Imple

Section 4. Quickstart Tutorial 35 Figure 2: Wiring panel

Section 8. Operation 350 'Object group 30, variation 2 is used to return analog data when the CR800 'is polled. Flag is set to an em

Section 8. Operation 3518.6.2.2 Terminology Table Modbus to Campbell Scientific Equivalents (p. 351) lists terminology equivalents to aid in unders

Section 8. Operation 352RTU/PLCRemoteTelemetryUnits(RTUs)andProgrammableLogicControllers(PLCs)wereatonetimeusedinexclusiveappl

Section 8. Operation 353SyntaxMoveBytes(Dest, DestOffset, Source, SourceOffset, NumBytes) 8.6.2.3.3 Addressing (ModbusAddr) Modbus devices have a

Section 8. Operation 3548.6.2.5 Modbus over IP Modbus over IP functionality is an option with the CR800. Contact Campbell Scientific for details.

Section 8. Operation 355 Scan(1,Sec,0,0) 'In the case of the CR800 being the ModBus master then the 'ModbusMaster instruction wo

Section 8. Operation 356Four levels of access are available through Basic Access Authentication: • all access denied (Level 0) • all access al

Section 8. Operation 357and arguments and the commands wherein they are used. Parameters and arguments for specific commands are listed in the fol

Section 8. Operation 358p2 DataQuery Specifies ending date and/or time when using date-range argument. time expressed in defined format (see Time

Section 8. Operation 359Table 88. BrowseSymbols API Command Parameters uri Optional. Specifies the URI (p. 447) for the data source. When queryin

Section 4. Quickstart Tutorial 36 4.1.2.2 Power Supply The CR800 is powered by a nominal 12 Vdc source. Acceptable power range is 9.6 to 16 Vdc.

Section 8. Operation 360is_read_only Boolean value that is set to true if the symbol is considered to be read-only. A value of false would indica

Section 8. Operation 361 <td>BallastLine</td><td>dl:BallastLine</td><td>6</td><td>true</td><t

Section 8. Operation 362 is_read_only="false" can_expand="true"/><symbol name="Public" uri=&qu

Section 8. Operation 363 Table 90. DataQuery API Command Parameters uri Optional. Specifies the URI (p. 447) for data to be queried. Syntax: dl:t

Section 8. Operation 364http://192.168.24.106/?command=DataQuery&uri=dl:MainData.Cond41&format=html&mode=most-recent&p1=70 Respon

Section 8. Operation 365<tr valign="middle" align="center"> <td nowrap>2012-08-21 22:41:50.0</td> <td nowr

Section 8. Operation 366JSON Response When json is entered in the DataQuery format parameter, the response will be formatted as CSIJSON. Followi

Section 8. Operation 367"2012-05-03 19:00:00",2,0,-0.9210536,-0.9679532,-0.9106316,-0.8637322,72.297,0 "2012-05-03 20:00:00",3,

Section 8. Operation 368"SECONDS","NANOSECONDS","RN","","" "","","&quo

Section 8. Operation 369SetValueEx Response The SetValueEx format parameter determines the format of the response.. If a format is not specified,

Section 4. Quickstart Tutorial 37 Figure 4: Analog sensor wired to differential channel #1 Table 1. Single-Ended and Differential Input Channels

Section 8. Operation 370 XML Response When xml is entered in the SetValueEx format parameter, the response will be CSIXML with a SetValueExRespon

Section 8. Operation 371ClockSet Response The ClockSet format parameter determines the format of the response. If a format is not specified, the f

Section 8. Operation 372JSON Response When json is entered in the ClockSet format parameter, the response will be formated as CSIJSON (p. 68). F

Section 8. Operation 373time Specifies the current value of the CR800 real-time clock2. This value will only be valid if the value of outcome is se

Section 8. Operation 374 8.6.3.7 Files Management Web API commands allow a web client to manage files on host CR800 memory drives. Camera image

Section 8. Operation 375*Done waiting for 100-continue <HTTP/1.1 200 OK <Date: Fri, 2 Dec 2011 05:31:50 <Server: CR1000.Std.25 <Content

Section 8. Operation 376 Table 98. FileControl API Command Parameters action 1 — Compile and run the file specified by file and mark it as the pr

Section 8. Operation 377 FileControl Response All output formats contain the following parameters. Any action (for example, 9) that performs a res

Section 8. Operation 378Examples: http://192.168.24.106/?command=ListFiles Response:returnsthedrivestructureofthehostCR800(CPU:,USR:,C

Section 8. Operation 379HTML page source: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/ht

Section 4. Quickstart Tutorial 38 Figure 5: Half-bridge wiring -- wind vane potentiometer Figure 6: Full-bridge wiring -- pressure transducer

Section 8. Operation 380Page source template: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> <html> <head> <titl

Section 8. Operation 381 <file is_dir="false" path="CPU:lights-web.cr1" last_write="yyyy-mm-ddThh:mm:ss.xx

Section 8. Operation 382 Table 102. NewestFile API Command Parameters expr Specifies the complete path and wildcard expression for the desired se

Section 8. Operation 383 Table 103. Special Keyboard-Display Key Functions Key Special Function [2] and [8] Navigate up and down through the menu

Section 8. Operation 384 Figure 113: Using the keyboard / display

Section 8. Operation 3858.8.1 Data Display Figure 114: Displaying data with the keyboard / display

Section 8. Operation 3868.8.1.1 Real-Time Tables and Graphs Figure 115: Real-time tables and graphs 8.8.1.2 Real-Time Custom The external keybo

Section 8. Operation 387 Figure 116: Real-time custom

Section 8. Operation 3888.8.1.3 Final-Storage Tables Figure 117: Final-storage tables

Section 8. Operation 3898.8.2 Run/Stop Program Figure 118: Run/Stop Program

Section 4. Quickstart Tutorial 39Note A period-averaging sensor has a frequency output, but it is connected to a single-ended analog input channel

Section 8. Operation 3908.8.3 File Display Figure 119: File display

Section 8. Operation 3918.8.3.1 File: Edit The CRBasic Editor is recommended for writing and editing datalogger programs. When making minor changes

Section 8. Operation 3928.8.4 Ports and Status Read More! See the appendix Status Table and Settings (p. 505). Figure 121: Ports and status 8.

Section 8. Operation 393 8.8.5.1 Set Time / Date Move the cursor to time element and press Enter to change it. Then move the cursor to Set and pres

Section 8. Operation 394Q: Why compress a program or operating system before sending it to a CR800 datalogger? A: Compressing a file has the pote

Section 8. Operation 395c) When prompted, set the archive format to “Gzip”. d) Select OK. The resultant file names will be of the type “myProgram.

Section 8. Operation 396

397Section 9. Maintenance Temperature and humidity can affect the performance of the CR800. The internal lithium battery must be replaced periodic

Section 9. Maintenance 398o Time. Clock will need resetting when the battery is replaced. o Final-storage data tables. A replacement lithium ba

Section 9. Maintenance 399 Figure 125: Pulling edge away from panel Pull one edge of the canister away from the wiring panel to loosen it from th

Section 4. Quickstart Tutorial 404.1.3.3.3 Pulse Sensor Wiring Wiring a pulse sensor to a CR800 is straight forward, as shown in figure Pulse-Inp

Section 9. Maintenance 400 Figure 127: Remove and replace battery Remove the lithium battery by gently prying it out with a small flat point sc

Section 9. Maintenance 401form must be either emailed to [email protected] or faxed to 435-227-9579. Campbell Scientific is unable to process

Section 9. Maintenance 402 

403Section 10. Troubleshooting Some troubleshooting tools, concepts, and hints are provided here. If a Campbell Scientific system is not operatin

Section 10. Troubleshooting 40410.3.1.1 CompileResults Reports messages generated by the CR800 at program upload and compile-time. A message will

Section 10. Troubleshooting 405Table 106. Warning Message Examples Example of Warning Message Meaning calibration. An invalid external sensor sign

Section 10. Troubleshooting 406incremented by all events that leave gaps in data, including cycling power to the CR800. 10.3.1.5 ProgErrors If n

Section 10. Troubleshooting 40710.3.1.8.2 Watchdoginfo.txt File A CPU: WatchdogInfo.txt file is created on the CPU: drive when the CR800 experience

Section 10. Troubleshooting 408results can be difficult due to the multitasking nature of the logger, but it can be a useful tool for fine tuning

Section 10. Troubleshooting 40910.3.4.3 Data Types, NAN, and ±INF NAN and ±INF are presented differently depending on the declared-variable data ty

Section 4. Quickstart Tutorial 41 Figure 9: Location of RS-232 ports Figure 10: Use of RS-232 and digital I/O when reading RS-232 devices

Section 10. Troubleshooting 410 0 / 0 NAN NAN NAN 65535 2147483648 NAN TRUE TRUE -2147483648 1 except Average() outputs NAN 2 except Ave

Section 10. Troubleshooting 411 10.4 Communications 10.4.1 RS-232 Baud rate mis-match between the CR800 and datalogger support software is often th

Section 10. Troubleshooting 412CommsMemFree(1) is encoded using the following expression: CommsMemFree(1) = tiny + lil*100 + mid*10000 + med*1000

Section 10. Troubleshooting 413 Table 110. CommsMemFree(1) Defaults and Use Example, TLS Active Example Buffer Category Condition: rese

Section 10. Troubleshooting 414queue, 14 bigfreeq packets are free (one in use), and 28 lilfreeq are free (two in use). These three pieces of in

Section 10. Troubleshooting 41510.5.2 Troubleshooting Power at a Glance Symptoms: PossiblesymptomsincludetheCR800programnotexecuting;Low12V

Section 10. Troubleshooting 416 Battery Test If using a rechargeable power supply, disconnect the charging source (i.e., solar panel or

Section 10. Troubleshooting 417 Charging Regulator with Solar-Panel Test Disconnect any wires attached to the 12V and G (ground) terminals on the

Section 10. Troubleshooting 41810.5.3.3 Charging Regulator with Transformer Test The procedure outlined in this flow chart tests PS100 and CH100

Section 10. Troubleshooting 419 Charging Regulator with ac or dc Transformer Test Disconnect any wires attached to the 12V and G (ground) terminal

Section 4. Quickstart Tutorial 424.1.4 Digital I/O Ports The CR800 has four digital I/O ports selectable as binary inputs or control outputs. Th

Section 10. Troubleshooting 420 No Adjusting Charging Circuit 1) Place a 5-kΩ resistor between a 12V terminal and a G (ground)

Section 10. Troubleshooting 421 Figure 128: Potentiometer R3 on PS100 and CH100 Charger / Regulator 10.6 Terminal Emulator CR800 terminal mode in

Section 10. Troubleshooting 422As shown in figure DevConfig Terminal Emulator (p. 424), after entering a terminal emulator, press Enter a few tim

Section 10. Troubleshooting 423Table 111. CR800 Terminal Commands Option Description Use REBOOT Program recompile Typing “REBOOT” rapidly will re

Section 10. Troubleshooting 424 Figure 129: DevConfig terminal emulator tab 10.6.1 Serial Talk Through and Sniffer In the P: Serial Talk Throug

425Section 11. Glossary 11.1 Terms acSeeVac(p.447). accuracyAmeasureofthecorrectnessofameasurement.SeealsotheappendixAccuracy,P

Section 11. Glossary 426 AsynchronousAcceptedabbreviationfor"gauge."AWGistheacceptedunitwhenidentifyingwirediameters.La

Section 11. Glossary 427CacheDataThedatacacheisasetofbinaryfileskeptontheharddiskofthecomputerrunningthedataloggersupportsof

Section 11. Glossary 428connector.Theplugattheendofalamppowercordisthemaleportionoftheconnector.Seeterminal(p.445). consta

Section 11. Glossary 429neighbordoesnotcommunicateforaperiodoftimeequalto2.5xtheCVI,thedevicewillsenduptofourHellos.Ifnore

Section 4. Quickstart Tutorial 434.2 Hands-On: Measuring a Thermocouple This tutorial is designed to illustrate the function of the CR800. During t

Section 11. Glossary 430DHCPDynamicHostConfigurationProtocol.ATCP/IPapplicationprotocol. differentialAsensorormeasurementterminalw

Section 11. Glossary 431EarthGroundAgroundingrodorothersuitabledevicethatelectricallytiesasystemordevicetotheearth.Earthground

Section 11. Glossary 432Format formats the selected CR800 memory device. All files, including data, on the device will be erased. LNCMDsoftwar

Section 11. Glossary 433globalvariableAvariableavailableforusethroughoutaCRBasicprogram.Thetermisusuallyusedinconnectionwithsubr

Section 11. Glossary 434Glossary.IncludefileafiletobeimplicitlyincludedattheendofthecurrentCRBasicprogram,oritcanberunasth

Section 11. Glossary 435 "Keep"MemoryMemorypreservedthroughresetduetopower‐upandprogramstart‐up. keyboarddisplayTheCR850(

Section 11. Glossary 436ModbusCommunicationprotocolpublishedbyModiconin1979foruseinprogrammablelogiccontrollers(PLCs). modem/termi

Section 11. Glossary 437NeighborDeviceDevicesinaPakBus®networkthatcancommunicatedirectlywithanindividualdevicewithoutbeingroutedt

Section 11. Glossary 438operatingsystemTheoperatingsystem(alsoknownas"firmware")isasetofinstructionsthatcontrolsthebas

Section 11. Glossary 439parameterArgumentorparameter?Thesetermsarefrequentlyinterchanged,buthaveausefuldistinction.Aparameterispa

Section 4. Quickstart Tutorial 446. After confirming the correct polarity on the wire connections, insert the green power connector into its rec

Section 11. Glossary 440printdeviceAnydevicecapableofreceivingoutputoverpin6(thePEline)inareceive‐onlymode.Printers,"dumb

Section 11. Glossary 441resistorAdevicethatprovidesaknownquantityofresistance. resolutionAmeasureofthefinenessofameasurement.See

Section 11. Glossary 442(86,400seconds),itissynchronizedwiththe24‐hourclock,sothattheprogramisexecutedatmidnightandeveryScan()

Section 11. Glossary 443serialAloosetermdenotingoutputoradevicethatoutputsanelectronicseriesofalphanumericcharacters. ShortCutso

Section 11. Glossary 444stateWhetheradeviceisonoroff. StationStatuscommandAcommandavailableinmostdataloggersupportsoftwareavai

Section 11. Glossary 445stringAdatumconsistingofalphanumericcharacters. supportsoftwareIncludesPC200W,PC400,RTDAQ,LoggerNet,andLogge

Section 11. Glossary 446terminalemulatorAcommand‐lineshellthatfacilitatestheissuanceoflow‐levelcommandstoadataloggerorsomeother

Section 11. Glossary 447UPSUninterrubtablepowersupply.AUPScanbeconstructedformostdataloggerapplicationsusingaclinepower,anac/aco

Section 11. Glossary 448VoltsSIunitforelectricalpotential. watchdogtimerAnerror‐checkingsystemthatexaminestheprocessorstate,softw

Section 11. Glossary 44911.2 Concepts 11.2.1 Accuracy, Precision, and Resolution Three terms often confused are accuracy, precision, and resolution

Section 4. Quickstart Tutorial 45 Figure 13: PC200W main window Table 3. PC200W EZSetup Wizard Example Selections Start the wizard to follow tab

Section 11. Glossary 450

451Appendix A. CRBasic Programming Instructions Read More! Parameter listings, application information, and code examples are available in CRBasic

Appendix A. CRBasic Programming Instructions 452SyntaxSub subname (argument list) [statement block] Exit Sub [statement block] End Sub WebP

Appendix A. CRBasic Programming Instructions 453ReadOnlyFlagsacommaseparatedlistofvariables(PublicorAliasname)asread‐only.SyntaxRead

Appendix A. CRBasic Programming Instructions 454DataIntervalSetsthetimeintervalforanoutputtable.SyntaxDataInterval(TintoInt, Interval,

Appendix A. CRBasic Programming Instructions 455A.2.3 Final Data Storage (Output) Processing Read More! See Data Output Processing Instructions (p.

Appendix A. CRBasic Programming Instructions 456PeakValleyDetectsmaximaandminimainasignal.SyntaxPeakValley(DestPV, DestChange, Reps, Sou

Appendix A. CRBasic Programming Instructions 457A.3 Single Execution at Compile Reside between BeginProg and Scan Instructions. ESSInitializePlace

Appendix A. CRBasic Programming Instructions 458SyntaxDo [{While | Until} condition] [statementblock] [ExitDo] [statementblock] Loop -or-

Appendix A. CRBasic Programming Instructions 459Scan/ExitScan/ContinueScan/NextScanEstablishestheprogramscanrate.ExitScanandContinueS

Section 4. Quickstart Tutorial 46Table 3. PC200W EZSetup Wizard Example Selections Start the wizard to follow table entries. Screen Name Informa

Appendix A. CRBasic Programming Instructions 460WaitDigTrigTriggersameasurementscanfromanexternaldigitaltrigger.SyntaxWaitDigTrig(Cont

Appendix A. CRBasic Programming Instructions 461ShutDownBeginBeginscodetoberunintheeventofanormalshutdownsuchaswhensendinganewpr

Appendix A. CRBasic Programming Instructions 462 A.5.2 Voltage VoltDiffMeasuresthevoltagedifferencebetweenHandLinputsofadifferential

Appendix A. CRBasic Programming Instructions 463BrHalf3WMeasuresratioofRs/Rfofathree‐wirehalf‐bridge.SyntaxBrHalf3W(Dest, Reps, Range,

Appendix A. CRBasic Programming Instructions 464A.5.7 Digital I/O CheckPortReturnsthestatusofacontrolport.SyntaxX = CheckPort(Port) Port

Appendix A. CRBasic Programming Instructions 465 A.5.8 SDI-12 Read More! See SDI-12 Sensor Support (p. 173). SDI12RecorderRetrievestheresultsfr

Appendix A. CRBasic Programming Instructions 466CS7500CommunicateswiththeCS7500open‐pathCO2andH2Osensor.SyntaxCS7500(Dest, Reps, SDMAd

Appendix A. CRBasic Programming Instructions 467Therm107MeasuresaCampbellScientific107thermistor.SyntaxTherm107(Dest, Reps, SEChan, Vx/ExCh

Appendix A. CRBasic Programming Instructions 468A.5.10 Peripheral Device Support Multiple SDM instructions can be used within a program. AM25TCo

Appendix A. CRBasic Programming Instructions 469SDMAO4SetsoutputvoltagelevelsinanSDM‐AO4analogoutputdevice.SyntaxSDMAO4(Source, Reps, S

Section 4. Quickstart Tutorial 47 Figure 14: Short Cut temperature sensor folder 4.2.4.2 Procedure: (Short Cut Steps 7 to 9) 7. Double-click Wiri

Appendix A. CRBasic Programming Instructions 470SDMSIO4Controlsandtransmits/receivesdatafromanSDM‐SIO4Interface.SyntaxSDMSIO4(Dest, R

Appendix A. CRBasic Programming Instructions 471A.6.2 Arithmetic Operators Table 112. Arithmetic Operators Symbol Name Notes ^ Raise to power Res

Appendix A. CRBasic Programming Instructions 472• bits 5-4: value_2 • bits 3-0: value_3 Code to extract these values is shown in CRBasic exampl

Appendix A. CRBasic Programming Instructions 473 CRBasicExample69. UsingBit‐ShiftOperatorsDim input_val As Long Dim value_1 As Long Dim valu

Appendix A. CRBasic Programming Instructions 474A.6.6 Trigonometric Functions A.6.6.1 Derived Functions Table Derived Trigonometric Functions (p.

Appendix A. CRBasic Programming Instructions 475COSReturnsthecosineofananglespecifiedinradians.Syntaxx = COS(source) COSHReturnsthehy

Appendix A. CRBasic Programming Instructions 476FloorRoundsavaluetoalowerinteger.Syntaxvariable = Floor(Number) FRACReturnsthefractio

Appendix A. CRBasic Programming Instructions 477RoundRoundsavaluetoahigherorlowernumber.Syntaxvariable = Round (Number, Decimal) SGNFin

Appendix A. CRBasic Programming Instructions 478VaporPressureCalculatesvaporpressurefromtemperatureandrelativehumidity.SyntaxVaporPress

Appendix A. CRBasic Programming Instructions 479 A.6.10 Other Functions AddPreciseUsedinconjunctionwithMovePrecise,allowshigh‐precisiontota

Section 4. Quickstart Tutorial 48 Figure 15: Short Cut thermocouple wiring 4.2.4.3 Procedure: (Short Cut Steps 10 to 11) Historical Note In th

Appendix A. CRBasic Programming Instructions 480LevelCrossingProcessesdataintoaone‐ortwo‐dimensionalhistogramusingalevel‐crossingcoun

Appendix A. CRBasic Programming Instructions 481String Output Processing TheSample()instructionwillconvertdatatypesifthesourcedatatypei

Appendix A. CRBasic Programming Instructions 482HexToDecConvertsahexadecimalstringtoafloatorinteger.SyntaxVariable = HexToDec(Expressi

Appendix A. CRBasic Programming Instructions 483StrCompComparestwostringsbysubtractingthecharactersinonestringfromthecharactersinano

Appendix A. CRBasic Programming Instructions 484DateReturnsaformatteddate/timestringoftypeLongderivedfromsecondssince1990.SyntaxDa

Appendix A. CRBasic Programming Instructions 485TimerReturnsthevalueofatimer.Syntaxvariable = Timer(TimNo, Units, TimOpt) A.9 Voice-Modem

Appendix A. CRBasic Programming Instructions 486VoiceSpeakDefinesthevoicestringthatshouldbespokenbythevoicemodem.SyntaxVoiceSpeak(&

Appendix A. CRBasic Programming Instructions 487MenuPickCreatesalistofselectableoptionsthatcanbeusedwheneditingaMenuItemvalue.Synta

Appendix A. CRBasic Programming Instructions 488SerialInBlockStoresincomingserialdata.Thisfunctionreturnsthenumberofbytesreceived.Sy

Appendix A. CRBasic Programming Instructions 489• Com310 • ComSDC7 • ComSDC8 • ComSDC10 • ComSDC11 • Com1 (C1,C2) • Com2 (C3,C4) • • •

Section 4. Quickstart Tutorial 4911. Outputs displays the list Selected Sensors on the left and data storage tables, under Selected Outputs, on the

Appendix A. CRBasic Programming Instructions 490ClockReportSendsthedataloggerclockvaluetoaremotedataloggerinthePakBusnetwork.Syntax

Appendix A. CRBasic Programming Instructions 491RouteReturnstheneighboraddressof(ortherouteto)aPakBusdatalogger.Syntaxvariable = Rout

Appendix A. CRBasic Programming Instructions 492TimeUntilTransmitTheTimeUntilTransmitinstructionreturnsthetimeremaining,inseconds,befor

Appendix A. CRBasic Programming Instructions 493FindSpaSearchesasourcearrayforavalueandreturnsthevalue'spositioninthearray.Syn

Appendix A. CRBasic Programming Instructions 494FileManageManagesprogramfilesfromwithinarunningdataloggerprogram.SyntaxFileManage(&quo

Appendix A. CRBasic Programming Instructions 495NewFileDeterminesifafilestoredonthedataloggerhasbeenupdatedsincetheinstructionwasla

Appendix A. CRBasic Programming Instructions 496TableName.OutputDetermineifdatawaswrittentoaspecificdatatablethelasttimethedatata

Appendix A. CRBasic Programming Instructions 497EMailRecvPollsanSMTPserverforemailmessagesandstoresthemessageportionoftheemailina

Appendix A. CRBasic Programming Instructions 498IPNetPowerControlspowerstateofindividualEthernetdevices.SyntaxIPNetPower( IPInterface, S

Appendix A. CRBasic Programming Instructions 499UDPOpenOpensaportfortransferringUDPpackets.SyntaxUDPOpen(IPAddr, UDPPort, UDPBuffsize) Web

Assistance Products may not be returned without prior authorization. The following contact information is for US and International customers resi

Section 4. Quickstart Tutorial 50 Figure 17: Short Cut output table definition 4.2.4.5 Procedure: (Short Cut Step 17 to 18) 17. Click Finish to

Appendix A. CRBasic Programming Instructions 500DNPSetsupaCR800asaDNPslave(outstation/server)device.Thirdparameterisoptional.Synt

Appendix A. CRBasic Programming Instructions 501LoadFieldCalLoadsvaluesfromtheFieldCalfileintovariablesinthedatalogger.SyntaxLoadField

Appendix A. CRBasic Programming Instructions 502ArgosTransmitInitiatesasingletransmissiontoanArgossatellitewhentheinstructionisexecu

Appendix A. CRBasic Programming Instructions 503OmniSatSTSetupSetsuptheOMNISATtransmittertosenddataovertheGOESorMETEOSATsatelliteat

Appendix A. CRBasic Programming Instructions 504

505Appendix B. Status Table and Settings The CR800 Status table contains system operating-status information accessible via the external keyboard

Appendix B. Status Table and Settings 506Table 116. Common Uses of the Status Table Feature or Suspect Constituent Status Field(s) to Consult RS

Appendix B. Status Table and Settings 507Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit? In

Appendix B. Status Table and Settings 508Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit?

Appendix B. Status Table and Settings 509Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit? In

Section 4. Quickstart Tutorial 51 18. Close this window by clicking on X in the upper right corner. 4.2.5 Send Program and Collect Data PC200W Sup

Appendix B. Status Table and Settings 510Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit?

Appendix B. Status Table and Settings 511Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit? In

Appendix B. Status Table and Settings 512Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit?

Appendix B. Status Table and Settings 513Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit? In

Appendix B. Status Table and Settings 514Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit?

Appendix B. Status Table and Settings 515Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit? In

Appendix B. Status Table and Settings 516Table 117. Status-Table Fields and Descriptions Fieldname Description Variable Type Default Range Edit?

Appendix B. Status Table and Settings 517instruction (ModBus, DNP3, generic protocols), CommsActive will remain TRUE as long as characters are rece

Appendix B. Status Table and Settings 518 Table 118. CR800 Settings Settings are accessed through the Campbell Scientific Device Configuration U

Appendix B. Status Table and Settings 519Table 118. CR800 Settings Settings are accessed through the Campbell Scientific Device Configuration Utili

Section 4. Quickstart Tutorial 52CR800. To view the OneMin table, select an empty cell in the display area, then click Add. Figure 20: PC200W

Appendix B. Status Table and Settings 520Table 118. CR800 Settings Settings are accessed through the Campbell Scientific Device Configuration Uti

Appendix B. Status Table and Settings 521Table 118. CR800 Settings Settings are accessed through the Campbell Scientific Device Configuration Utili

Appendix B. Status Table and Settings 522Table 118. CR800 Settings Settings are accessed through the Campbell Scientific Device Configuration Uti

Appendix B. Status Table and Settings 523Table 118. CR800 Settings Settings are accessed through the Campbell Scientific Device Configuration Utili

Appendix B. Status Table and Settings 524Table 118. CR800 Settings Settings are accessed through the Campbell Scientific Device Configuration Uti

Appendix B. Status Table and Settings 525Table 118. CR800 Settings Settings are accessed through the Campbell Scientific Device Configuration Utili

Appendix B. Status Table and Settings 526

527Appendix C. Serial Port Pinouts C.1 CS I/O Communications Port Pin configuration for the CR800 CS I/O port is listed in table CS I/O Pin Descri

Appendix C. Serial Port Pinouts 528connect the computer DTE device to the CR800 DCE device. The following table describes RS-232 pin function wit

Appendix C. Serial Port Pinouts 529 Table 121. Standard Null-Modem Cable or Adapter-Pin Connections* DB9 DB9 pin 1 & 6 ---------- pin 4 pin

Section 4. Quickstart Tutorial 534.2.5.3 Procedure: (PC200W Step 5) 5. In the Add Selection window Tables field, click on OneMin, then click Paste.

Appendix C. Serial Port Pinouts 530

531Appendix D. ASCII / ANSI Table American Standard Code for Information Interchange (ASCII) / American National Standards Institute (ANSI) Decima

Appendix D. ASCII / ANSI Table 532Dec Hex Keyboard Display Char LoggerNet Char Hyper- TerminalChar Dec Hex Keyboard Display Char LoggerNetChar Hy

Appendix D. ASCII / ANSI Table 533Dec Hex Keyboard Display Char LoggerNet Char Hyper- TerminalChar Dec Hex Keyboard Display Char LoggerNetChar Hype

Appendix D. ASCII / ANSI Table 534Dec Hex Keyboard Display Char LoggerNet Char Hyper- TerminalChar Dec Hex Keyboard Display Char LoggerNetChar Hy

535Appendix E. FP2 Data Format FP2 data are two-byte big-endian values. Representing bits in each byte pair as ABCDEFGH IJKLMNOP, bits are descri

Appendix E. FP2 Data Format 536

537Appendix F. Other Campbell Scientific Products Campbell Scientific products expand the measurement and control capability of the CR800. Consul

Appendix F. Other Campbell Scientific Products 538F.1.2 Wireless Sensor Network Wireless sensors use the Campbell wireless sensor (CWS) spread-sp

Appendix F. Other Campbell Scientific Products 539F.2.2 Pulse / Frequency Input Expansion Modules These modules expand and enhance pulse- and frequ

Section 4. Quickstart Tutorial 544.2.5.4 Procedure: (PC200W Step 6) 6. Click on the Collect Data tab. From this window, data are chosen to be co

Appendix F. Other Campbell Scientific Products 5404WHB10K 10-kΩ, four-wire, half-bridge TIM module 4WPB100 100-Ω, four-wire, PRT-bridge TIM modul

Appendix F. Other Campbell Scientific Products 541F.4 Control Output Modules F.4.1 Digital I/O (Control Port) Expansion Digital I/O expansion modul

Appendix F. Other Campbell Scientific Products 542PakBus®, Modbus, DNP3, RS-232, SDI-12, or CANbus using the SDM-CAN module. Table 139. Measureme

Appendix F. Other Campbell Scientific Products 543F.6.2 Batteries Table 141. Batteries Model Description BPALK D-cell, 12-Vdc alkaline battery pa

Appendix F. Other Campbell Scientific Products 544F.6.5 Primary Power Sources Table 144. Primary Power Sources Model Description 9591 18-Vac, 1.

Appendix F. Other Campbell Scientific Products 545F.8 Telecommunications Products Many telecommunications devices are available for use with the CR

Appendix F. Other Campbell Scientific Products 546F.8.5 Private Network Radios m Table 151. Private Network Radios Model Description RF400 Serie

Appendix F. Other Campbell Scientific Products 547Table 154. Starter Software Model Description VisualWeather Easy-to use datalogger support softwa

Appendix F. Other Campbell Scientific Products 548F.10.2.1 LoggerNet Suite The LoggerNet suite features a client-server architecture that facilit

Appendix F. Other Campbell Scientific Products 549Table 157. Software Tools Software Compatibility Description Device Configuration Utility (DevCon

Section 4. Quickstart Tutorial 55 Figure 24: PC200W View data utility

Appendix F. Other Campbell Scientific Products 550

551Index 1 12VTerminal...6212‐VoltSupply ...865 5V‐

Index 552Backup... 36,76BackupBattery... 36,

Index 553Concatenation ...239ConditionalCompile ...199,200Conditio

Index 554Desiccant... 75,81,429DevConfig...

Index 555Field‐Zero...154FieldCalibration...151,152,

Index 556HTTPOut... 496Humidity ... 75,8

Index 557Lightning ...34,75,86,431LightningProtection ...

Index 558Network ... 489NetworkTimeProtocol... 496NewFieldCa

Index 559PolarityReversal ...278PolarizedSensor ...293 Port ...

Section 4. Quickstart Tutorial 564.2.5.6 Procedure: (PC200W Steps 10 to 11) 10. Click on to open a file for viewing. In the dialog box, select

Index 560Quarter‐BridgeShunt... 165Quarter‐BridgeZero... 166QuickstartTuto

Index 561SDMIO16...468SDMSIO4...468SDMSpe

Index 562StartTime... 506StartUpCode... 506Sta

Index 563Totalize ...455Transducer...33,59

Index 564WriteIO ... 464WritingProgram ... 108X XM

Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbel

57Section 5. System Overview A Campbell Scientific data-acquisition system is made up of the following basic components: • Sensors • Datalogger

Section 5. System Overview 58 Figure 27: Features of a data-acquisition system 5.1 CR800 Datalogger The CR800 datalogger is one part of a data

Section 5. System Overview 59Sensors transduce phenomena into measurable electrical forms, outputting voltage, current, resistance, pulses, or stat

Section 5. System Overview 60A library of sensor manuals and application notes are available at www.campbellsci.com to assist in measuring many s

Section 5. System Overview 61as compared to pulse-count measurements. The frequency resolution of pulse-count measurements can be improved by exten

Section 5. System Overview 625.1.3.3 Grounding Terminals Read More! See Grounding (p. 86). Proper grounding will lend stability and protection to

Section 5. System Overview 635.1.3.5 Communications Ports Read More! See sections RS-232 and TTL Recording (p. 308), Telecommunications and Data Re

Section 5. System Overview 64panel temperature at each scan, and the one-minute sample of panel temperature. TCTemps displays two thermocouple te

Section 5. System Overview 65• Charge sources o Solar panels o Wind generators o Vac / Vac or Vac / Vdc wall adapters Refer to the appendix Pow

Section 5. System Overview 66program is active at a given time. Two Campbell Scientific software applications, Short Cut and CRBasic Editor, are

Section 5. System Overview 67o CRBasic variables o Final Storage o Communications memory o USR: drive  User allocated  FAT32 RAM drive  P

Section 5. System Overview 68 5.1.8.4 Data Format on Computer CR800 data stored on a PC via support software is formatted as either ASCII or Bina

Section 5. System Overview 695.1.9.2 Modbus Read More! See Modbus (p. 350). The CR800 supports Modbus master and Modbus slave communication for inc

7Table of Contents Section 1. Introduction...27 1.1 HELLO ...

Section 5. System Overview 70 Figure 28: Custom menu example 5.1.10 Security CR800 applications may include the collection of sensitive data, o

Section 5. System Overview 715.1.10.1 Vulnerabilities While "security through obscurity" may have provided sufficient protection in the p

Section 5. System Overview 72• Get historical records or other files present on the datalogger drive spaces. • More access is given when a .csi

Section 5. System Overview 73greater than it will also be unlocked, so unlocking level 1 (entering the Level 1 security code) also unlocks levels 2

Section 5. System Overview 745.1.10.3.2 PakBus Instructions The following CRBasic PakBus instructions have provisions for password protection: •

Section 5. System Overview 75One use of file encryption may be to secure proprietary code but make it available for copying. 5.1.10.5 Communicatio

Section 5. System Overview 765.1.11.3 Calibration Read More! See Self-Calibration (p. 285). The CR800 uses an internal voltage reference to routi

Section 5. System Overview 77applications in LoggerNet Remote are run on a separate computer, and are used to manage the LoggerNet Linux server. •

Section 5. System Overview 78 

79Section 6. CR800 Specifications 1.1CR800specificationsarevalidfrom─25°to50°Cinnon‐condensingenvironmentsunlessotherwisespecified.

Table of Contents 8Section 5. System Overview ...57 5.1 CR800 Datalogger...

Section 6. CR800 Specifications 80

81Section 7. Installation 7.1 Moisture Protection When humidity tolerances are exceeded and condensation occurs, damage to CR800 electronics can r

Section 7. Installation 82 Figure 29: Enclosure 7.4 Power Sources Note Reliable power is the foundation of a reliable data-acquisition system.

Section 7. Installation 83Power supplies available from Campbell Scientific can be reviewed in the appendix Power Supplies (p. 542), or at www.camp

Section 7. Installation 84should be connected to the CR800. The diode OR connection causes the supply with the largest voltage to power the CR800

Section 7. Installation 85Table 4. Current Source and Sink Limits Terminal Limit1 < 1.80 A @ 70°C < 1.50 A @ 85°C 5V + CS I/O (combined)5

Section 7. Installation 86Note Table Current Source and Sink Limits (p. 84) has more information on excitation load capacity. 7.4.5.3 Continuou

Section 7. Installation 87products, so it should always be requested when ordering. Spark gaps for these devices must be connected to either the ea

Section 7. Installation 88 Figure 31: Schematic of grounds 7.5.1.1 Lightning Protection The most common and destructive ESDs are primary and se

Section 7. Installation 89In addition to protections discussed in ESD Protection (p. 86), use of a simple lightning rod and low-resistance path to

Table of Contents 97.2 Temperature Range... 81 7.3 Enclosures...

Section 7. Installation 907.5.2 Single-Ended Measurement Reference Low-level, single-ended voltage measurements are sensitive to ground potential

Section 7. Installation 91lead resistance result in different ground potential at the two instruments. For this reason, a differential measurement

Section 7. Installation 92 Figure 33: Model of a ground loop with a resistive sensor 7.6 CR800 Configuration The CR800 ships from Campbell Scie

Section 7. Installation 93• Provide a terminal emulator useful in configuring devices not directly supported by DevConfig graphical user interface

Section 7. Installation 947.6.2 Sending the Operating System The CR800 is shipped with the operating system pre-loaded. However, OS updates are m

Section 7. Installation 95 Figure 35: DevConfig OS download window Figure 36: Dialog box confirming OS download

Section 7. Installation 967.6.2.2 Sending OS with Program Send Operating system files can be sent using the Program Send command. Beginning with

Section 7. Installation 97Configuration (p. 98) ) that gives the user a chance to save and print the settings for the device. Clicking the Factory

Section 7. Installation 98 Figure 38: Summary of CR800 configuration 7.6.3.1.1 Deployment Tab Illustrated in figure DevConfig Deployment Tab (p

Section 7. Installation 99 Datalogger Sub-Tab • Serial Number displays the CR800 serial number. This setting is set at the factory and cannot be e