Campbell-scientific LoggerNet Datalogger Support Software Manual de usuario Pagina 493

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Appendix A. Glossary of Terms
Station NumberThe LoggerNet server assigns and uses station numbers for
routing packets to the dataloggers. These numbers can be modified using
CoraScript. Not to be confused with datalogger serial numbers, PakBus
addresses, or addresses set in communications peripherals such as RF or MD9
modems.
StorageAn entry in the status table that shows the number of final storage
locations available.
SynchronousThe transmission of data between devices occurs as groups of
zeros and ones. For the data to be readcorrectly, the receiving device must
begin reading at the proper point in the series. In synchronous
communications, this coordination is accomplished by synchronizing the
transmitting and receiving devices to a common clock signal (see
Asynchronous).
T
Tab WindowsSome screens depict a series of related windows in a multi-
tabbed notebook format. When you click the file folder tab, the information on
the tab you chose will be displayed.
TablesAn entry in the status table that shows the number of user-created
data tables. (See also Data Table.)
Table-based DataloggersTable-based dataloggers store each record of data
that follows an output instruction in a table. Each separate occurrence of an
output instruction directs the datalogger to store the data in a separate table.
Table-basedincludes both “TD” table-data and PBPakBus versions of the
Edlog dataloggers as well as the CRBasic dataloggers.
Table DefinitionsList of data available from a table-based datalogger. The
datalogger supplies this list on request. The tables are determined by the
datalogger program. The LoggerNet server must have a current version of the
table definitions to collect data from the datalogger.
Time StampThe date and time when data are stored in the datalogger.
TMStampAn entry in the status table that shows the date and time the status
information was recorded.
TransactionThe exchange of data or information between two devices or
programs. For example, setting the clock in a datalogger requires a transaction
between the server and the datalogger.
U
Uncollectable HoleOccurs when a hole in the data cache cannot be collected
from the datalogger before the data table wraps around and the records are
overwritten.
A-11
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