Campbell-scientific CR3000 Micrologger Manual de usuario descargar pdf (Pagina 220)

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101

Section 7. Installation

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recognize the C command. CR3000 dataloggers, however, require custom

programming to output and accept these same ASCII strings. A similar program

can be used to emulate CR10X and CR23X dataloggers.

Solution: CRBasic example Measure Sensors / Send RS-232 Data

(p. 220) imports

and exports serial data via the CR3000 RS-232 port. Imported data are expected

to have the form of the legacy Campbell Scientific time set C command. Exported

data has the form of the legacy Campbell Scientific Printable ASCII format.

Note The nine-pin RS-232 port can be used to download the CR3000 program if

the SerialOpen() baud rate matches that of the datalogger support software (p. 404,

p. 453).

However, two-way PakBus

communications will cause the CR3000 to

occasionally send unsolicited PakBus

packets out the RS-232 port for at least 40

seconds after the last PakBus

communication. This will produce some "noise" on

the intended data-output signal.

Monitor the CR3000 RS-232 port with the HyperTerminal instance described in

Configure HyperTerminal

(p. 216). Send C-command file to set the clock according

to the text in the file.

Note The HyperTerminal file will not update automatically with actual time. The

file only simulates a clock source for the purposes of this example.

CRBasicExample41. MeasureSensors/SendRS‐232Data

'CR3000 is programmed to accept legacy "C" command to set the CR3000 clock.

'Declarations

'Visible Variables

Public StationID

Public KWH_In

Public KVarH_I

Public KWHHold

Public KVarHold

Public KWHH

Public KvarH

Public InString As String * 25

Public OutString As String * 100

'Hidden Variables

Dim i, rTime(9), OneMinData(6), OutFrag(6) As String

Dim InStringSize, InStringSplit(5) As String

Dim Date, Month, Year, DOY, Hour, Minute, Second, uSecond

Dim LeapMOD4, LeapMOD100, LeapMOD400

Dim Leap4 As Boolean, Leap100 As Boolean, Leap400 As Boolean

Dim LeapYear As Boolean

Dim ClkSet(7) As Float

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Campbell-scientific CR3000 Micrologger Manual de usuario Pagina 220

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