Campbell Scientific CR1000KD CR800 and CR850 Measurement and Control Systems - Page 184
SDI-12 Extended Command Support
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Section 7. Installation SlowSequence Do 'Note SDI12SensorSetup / SDI12SensorResponse must be renewed 'after each successful SDI12Recorder() poll. SDI12SensorSetup(1,1,0,95) Delay(1,95,Sec) SDI12SensorResponse(Temp(1)) Loop EndSequence SlowSequence Do SDI12SensorSetup(1,3,1,95) Delay(1,95,Sec) SDI12SensorResponse(Temp(2)) Loop EndSequence SlowSequence Do SDI12SensorSetup(1,5,2,95) Delay(1,95,Sec) SDI12SensorResponse(Temp(3)) Loop EndSequence SlowSequence Do SDI12SensorSetup(1,7,3,95) Delay(1,95,Sec) SDI12SensorResponse(Temp(4)) Loop EndSequence EndProg SDI-12 Extended Command Support SDI12Recorder() sends any string enclosed in quotation marks in the Command parameter. If the command string is a non-standard SDI-12 command, any response is captured into the variable assigned to the Destination parameter, so long as that variable is declared As String. CRBasic example Use of an SDI-12 Extended Command (p. 185) shows appropriate code for sending an extended SDI12 command and receiving the response. The extended command feature has no built-in provision for responding with follow-up commands. However, the program can be coded to parse the response and issue subsequent SDI-12 commands based on a programmer customized evaluation of the response. For more information on parsing strings, see Input Programming Basics (p. 207). 184
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