
| Número de PIN | Función de PIN |
|---|---|
| 1 | GPIO signal output2 |
| 2 | GPIO signal output1 |
| 3 | Signal ground |
| 4 | RX(RS232) |
| 5 | TX(RS232) |
| 6 | Signal ground |
| 7 | GPIO signal input 2(closed) |
| 8 | GPIO signal input 1 |
| 9 | Signal ground |
| 10 | A+ (RS485) |
| 11 | B- (RS485) |
| 12 | Signal ground |
| 13 | Relay normal close port |
| 14 | Relay common port |
| 15 | Relay normal open port |