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 |