Measurement Computing DaqView - Manual (Page 66)

Setpoint Configuration Summary
◊ 16-bit High Limit Identified as “Limit A” in software
◊ 16-bit Low Limit Identified as “Limit B” in software
◊ Criteria:
Inside window
Signal is below Limit A and Above Limit B
Outside window
Signal is above Limit A, or below Limit B
Greater than value
Signal is above Limit B, Limit A is not used
Less than value
Signal is below Limit A, Limit B is not used
Equal to value
Signal is equal to Limit A, Limit B is not used. Note that the Equal to
mode
is intended for use with counter or digital input channels [as the
source channel]. See the TIP below.
Hysteresis mode Outside the window high
forces Output 2 until an outside the window low
condition exists; then Output 1 is forced. Output 1 continues until an
outside the window high
condition exists. The cycle repeats as long as
the acquisition is running in Hysterisis mode.
◊ Update Mode:
Update on True Only
Update on True and False
None - Do not update
◊ 16-bit DAC value, P2C value, or Timer value when input meets criteria
◊ 16-bit DAC value, P2C value, or Timer value when input does not meet criteria
◊ Type of Action:
None
Update P2C (see note)
Update DACx
Update TImerx
By software default, P2 Port C comes up as a digital input. If you want the P2 Port C
signal to be a digital output [in some initial state before an acquisition is started] and P2
Port C is to be updated by set point criterion, then you must do an asynchronous write to P2
Port C before the acquisition is started. The initial value will only be output if the
asynchronous write to P2 Port C has been performed.
TIP: It is recommended that the “Equal to Limit A” mode only be used with counter or
digital input channels as the channel source. If similar functionality is desired for analog
channels, then the “Inside Window” mode should be used.
11-6 The Setpoints Window 888194 DaqView User’s Guide