Synchronized Temp 120 And Volt 108 Measurements - Campbell TEMP 120 Product Manual

B.4 Synchronized TEMP 120 and VOLT 108
measurements
The following program measures a full-bridge sensor on a VOLT 108 at 100 Hz, and 20 type-T
thermocouples on a TEMP 120 module at 1 Hz. The measurements are synchronized by putting
the faster measurements in a SubScan.
CRBasic Example 5: Synchronized TEMP 120 and VOLT 108 measurements
'GRANITE 6 Datalogger
'This program uses a TEMP 120 module to measure 20 type-T thermocouples at
'1 Hz and a VOLT 108 module to measure a full-bridge sensor at 100 Hz. A
'SubScan instruction is used to synchronize the full-bridge
'measurements with the thermocouple measurements.
'Declare Variables and Units
Public TC(20) : Units
Public strain_raw :
'Define Data Tables
DataTable(OneSec, TRUE, -1)
DataInterval(0, 1, SEC, 10)
Average(20, TC(), FP2, FALSE)
Maximum(1, strain_raw, FP2, FALSE, TRUE)
EndTable
'Main Program
BeginProg
Scan(1, SEC, 3, 0)
'Measure 20 Type-T thermocouples on TEMP 120 with CPI address 1
CDM_TCComp(TEMP120, 1, TC(), 20, 1, TYPET, 1, 0)
SubScan(10, MSEC, 100)
'Measure full-bridge sensor on VOLT 108 with CPI address 2
CDM_BrFull(VOLT108, 2, strain_raw, 1, mV200, 1, X1, 1, _
5000, TRUE, TRUE, 1000, 1000, 1.0, 0.0)
NextSubScan
'Call data table to process and store data
CallTable(OneSec)
NextScan
EndProg
TC = DegC
Units strain_raw = mVpV
TEMP 120 31