Measurement Computing Data Acquisition Systems rev.10.4 - Manual (Page 103)

daqAdcSetSetpoints
Also See: daqAdcSetScan
Format
daqAdcSetSetpoints(handle, LimitA, LimitB, reserved, setpointFlags,
setpointOutput, output1, output2, outputMask1, outputMask2,
setpointCount)
Purpose
daqAdcSetSetpoints allows the setting of up to 16 setpoints for a device.
Parameter Summary
Parameter Type Description
handle DaqHandleT The handle to the device for which to set the option
limitA PFLOAT Limit A specifies a value against which to determine if setpoint
criteria are met
limitB PLFOAT Limit B specifies a value against which to determine if setpoint
criteria are met
reserved PFLOAT Reserved – reserved for future use
setpointFlags DWORD The value of the option to set
setpointOutput DWORD Output source or action: None, P2 Port C, Timer0-1, DAC0-3
output1 PFLOAT The value to output when the setpoint criteria are met
output2 PFLOAT
The value to output when the setpoint criteria are NOT met
outputMask1 PFLOAT Output mask for output1 – for P2 Port C only
outputMask2 PFLOAT Output mask for output2 – for P2 Port C only
setpointCount DWORD Number of setpoints to configure (16 max)
Parameter Values
handle: obtained from the daqOpen function
limitA: any valid value for the input channel used for the setpoint
limitB: any valid value for the input channel used for the setpoint
reserved: not specified
setpointFlags: see following table
setpointOutput: see following table
output1: any valid value for the output channel used for the setpoint
output2: any valid value for the output channel used for the setpoint
setpointCount: from 0 to 16
Parameter Type Definitions
setpointflags - DaqSetpointFlags
Definition Description
DsfEqualLimitA Setpoint criteria: Input Channel = limit A
DsfLessThanLimitA Setpoint criteria: Input Channel < limit A
DsfGreaterThanLimitB Setpoint criteria: Input Channel > limit B
DsfOutsideLimits Setpoint criteria: Input Channel > limit A OR Input Channel < limit B
DsfInsideLimits Setpoint criteria: Input Channel < limit A AND Input Channel > limit B
DsfHysteresis Setpoint criteria: Input Channel > limit A then output1 Input Channel < limit B then
output2
DsfUpdateOnTrueOnly If criteria met then output1
DsfUpdateOnTrueAndFalse If criteria met then output1 else output2
For outside or inside window limits (DsfOutsideLimits, DsfInsideLimits) and for
hysteresis (DsfHysteresis) Limit A must be greater than Limit B. If this criteria is not
met DerrSetpointLimits error (error code 164) will be returned.
Programmer’s Manual 907794 Daq API Command Reference 4.2-47