Chapter 7 Counters
X Series User Manual 7-44 ni.com
Routing a Signal to Counter n Aux
Each counter has independent input selectors for the Counter n Aux signal.
Any of the following signals can be routed to the Counter n Aux input:
•RTSI<0..7>
• PFI <0..15>
• AI Reference Trigger (ai/ReferenceTrigger)
• AI Start Trigger (ai/StartTrigger)
•PXI_STAR
• Analog Comparison Event
• Change Detection Event
In addition, a counter’s Internal Output, Gate or Source can be routed to a
different counter’s Aux. A cou nter’s own gate can also be routed to its Aux
input.
Some of these options may not be available in some driver software.
Counter n A, Counter n B, and Counter n Z Signals
Counter n B can control the direction of counting in edge counting
applications. Use the A, B, and Z inputs to each counter when measuring
quadrature encoders or measuring two pulse encoders.
Routing Signals to A, B, and Z Counter Inputs
Each counter has independent input selectors for each of the A, B, and
Zinputs. Any of the following signals can be routed to each input:
•RTSI<0..7>
• PFI <0..15>
•PXI_STAR
• Analog Comparison Event
Routing Counter n Z Signal to an Output Terminal
You can route Counter n Z ou t to any RTSI <0..7> terminal.
Counter n Up_Down Signal
Counter n Up_Down is another name for the Counter n B signal.
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