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IRGASON Integrated CO

O Open-Path Gas Analyzer and 3D Sonic Anemometer

10. Datalogger Programming

The datalogger is programmed in the CRBasic language, which features two

instructions for communication with the EC100 via SDM. The first instruction

is EC100(), which reads measurement data from the EC100. The second is the

EC100Configure(), which receives and sends configuration settings.

10.1 EC100() Instruction

The EC100() instruction is used to retrieve data from the IRGASON via SDM.

The instruction syntax is:

EC100 (Dest, SDMAddress, EC100Cmd)

Dest is the input variable name in which to store data from the IRGASON.

The length (i.e., number of data elements) of the input variable array will

depend on the selected value for EC100Cmd. A value of -99999 will be loaded

into Dest(1) if a signature error on SDM data occurs.

EC100Cmd Dest Variable Length

0 8

1 12

2 13

SDMAddress defines the address of the IRGASON with which to

communicate. Valid SDM addresses are 0 through 14. Address 15 is reserved

for the SDMTrigger() instruction.

EC100Cmd is a parameter that requests data from the analyzer. The results for

the command are returned in the array specified by the Dest parameter. A

numeric code is entered to request the data, as shown in Table 10-1.

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 58 59

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Campbell IRGASON Manuale Pagina 42