Counter Triggering - National Instruments M Series User Manual

Table 7-6. 68-Pin Device Default NI-DAQmx Counter/Timer Pins
Counter/Timer Signal
CTR 0 SRC
CTR 0 GATE
CTR 0 AUX
CTR 0 OUT
CTR 0 A
CTR 0 Z
CTR 0 B
CTR 1 SRC
CTR 1 GATE
CTR 1 AUX
CTR 1 OUT
CTR 1 A
CTR 1 Z
CTR 1 B
FREQ OUT
You can use these defaults or select other sources and destinations for the counter/timer signals
in NI-DAQmx. Refer to Connecting Counter Signals in the NI-DAQmx Help or the
LabVIEW Help for more information about how to connect your signals for common counter
measurements and generations. M Series default PFI lines for counter functions are listed in
Physical Channels in the NI-DAQmx Help or the LabVIEW Help.

Counter Triggering

Counters support three different triggering actions:
Arm Start Trigger—To begin any counter input or output function, you must first enable,
•
or arm, the counter. Software can arm a counter or configure counters to be armed on a
hardware signal. Software calls this hardware signal the Arm Start Trigger. Internally,
software routes the Arm Start Trigger to the Counter n HW Arm input of the counter.
ArmStart.DigEdge.Edge is not supported on M Series devices and modules.
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M Series User Manual
Default Connector 0 Pin Number (Name)
37 (PFI 8)
3 (PFI 9)
45 (PFI 10)
2 (PFI 12)
37 (PFI 8)
3 (PFI 9)
45 (PFI 10)
42 (PFI 3)
41 (PFI 4)
46 (PFI 11)
40 (PFI 13)
42 (PFI 3)
41 (PFI 4)
46 (PFI 11)
1 (PFI 14)
© National Instruments | 7-29