Measurement Computing Personal Daq/3000 Series - Manual (Page 64)

Using Multiple Inputs to Control One DAC Output
Update Mode: Rising Edge, for each of 2 channels
Criteria Used: Inside Window, for each of 2 channels
The figure below shows how multiple inputs can update one output. In the following figure the DAC2
analog output is being updated. Analog input Channel 3 has an inside-the-window setpoint applied.
Whenever Channel 3’s input goes inside the programmed window, DAC2 will be updated with 3.0V.
Analog input Channel 7 also has an inside-the-window setpoint applied. Whenever Channel 7’s input goes
inside the programmed window, DAC2 will be updated with minus 7.0V.
Limit A
(for Ch3)
Limit B
(for Ch3)
Limit A
(for Ch7)
Limit B
(for Ch7)
Detection (Ch3)
Detection (Ch7)
+3.0 V
DAC2 0.0 V
-7.0 V
Using Two Criteria to Control an Output*
*
The update on True Only mode was selected and therefore the updates for DAC2 will only occur when the criteria is
met. However, in the above figure we see that there are 2 setpoints acting on one DAC. We can also see that the
channel’s two criteria can be met during the same scan. When both channel criteria [from the scan] are True, then the
DAC2 voltage will be associated with the one most recently met.
6-10 Setpoint Configuration for Output Control
887894 Personal Daq/3000 Series User’s Manual