Bus-Powered M Series Signal Connections for Counters

NI-DAQmx Device Considerations

Bus-Powered M Series Signal Connections for Counters

The following table lists the default input terminals for various counter measurements on bus-powered M Series devices. You can use a different PFI line for any of the input terminals. To change the PFI input for a measurement, use the NI-DAQmx channel attributes/properties.

16-PFI Line Devices (NI 6218)

Measurement Ctr0 Ctr1
Count Edges Edges: PFI 0
Count Direction: PFI 9
Edges: PFI 3
Count Direction: PFI 10
Pulse Width Measurement PFI 1 PFI 2
Period/Frequency Measurement (Low Frequency with One Counter) PFI 1 PFI 2
Period/Frequency Measurement (High Frequency with Two Counters) PFI 0 PFI 3
Period/Frequency Measurement (Large Range with Two Counters) PFI 0 PFI 3
Semiperiod Measurement PFI 1 PFI 2
Two-Edge Separation Measurement Start: PFI 9
Stop: PFI 1
Start: PFI 10
Stop: PFI 2
Position Measurement A: PFI 0
B: PFI 9
Z: PFI 1
A: PFI 3
B: PFI 10
Z: PFI 2

16-PFI Line Devices (NI 6212/6216)

Measurement Ctr0 Ctr1
Count Edges Edges: PFI 8
Count Direction: PFI 10
Edges: PFI 3
Count Direction: PFI 11
Pulse Width Measurement PFI 9 PFI 4
Period/Frequency Measurement (Low Frequency with One Counter) PFI 9 PFI 4
Period/Frequency Measurement (High Frequency with Two Counters) PFI 8 PFI 3
Period/Frequency Measurement (Large Range with Two Counters) PFI 8 PFI 3
Semiperiod Measurement PFI 9 PFI 4
Two-Edge Separation Measurement Start: PFI 10
Stop: PFI 9
Start: PFI 11
Stop: PFI 4
Position Measurement A: PFI 8
B: PFI 10
Z: PFI 9
A: PFI 3
B: PFI 11
Z: PFI 4

The following table lists the output terminals for counter output. You can use a different PFI line for any of the output terminals.

Ctr0 Ctr1
PFI 12 PFI 13

8-PFI Line Devices (Such as the NI 6210/6211/6215)

Measurement Ctr0 Ctr1
Count Edges Edges: PFI 0
Count Direction: PFI 0
Edges: PFI 3
Count Direction: PFI 3
Pulse Width Measurement PFI 1 PFI 2
Period/Frequency Measurement (Low Frequency with One Counter) PFI 1 PFI 2
Period/Frequency Measurement (High Frequency with Two Counters) PFI 0 PFI 3
Period/Frequency Measurement (Large Range with Two Counters) PFI 0 PFI 3
Semiperiod Measurement PFI 1 PFI 2
Two-Edge Separation Measurement Start: PFI 0
Stop: PFI 1
Start: PFI 3
Stop: PFI 2
Position Measurement A: PFI 0
B: PFI 1
Z: PFI 2
A: PFI 3
B: PFI 2
Z: PFI 1

The following table lists the output terminals for counter output. You can use a different PFI line for any of the output terminals.

Ctr0 Ctr1
PFI 4 PFI 5