IO-SA0400 Wiring Guide
| Channel | A Terminal | B Terminal | b Terminal |
|---|---|---|---|
| Channel 1 | Terminal 1 | Terminal 2 | Terminal 3 |
| Channel 2 | Terminal 4 | Terminal 5 | Terminal 6 |
| Channel 3 | Terminal 7 | Terminal 8 | Terminal 9 |
| Channel 4 | Terminal 10 | Terminal 11 | Terminal 12 |
The 24V External is connected on the bottom of the module.