Indicator Description
| Indicator | Description |
| PWR (Green) |
Module power indicator: On: Power supply is normal Off: Abnormal power supply or no power |
| RUN (Green) |
Communication indicator: On: Normal communication Off: Abnormal communication |
| LED1 |
Output1 indicator On: Output1 is active Off: Output1 is inactive |
| LED2 |
Output2 indicator On: Output2 is active Off: Output2 is inactive |
| LED3 |
Output3 indicator On: Output3 is active Off: Output3 is inactive |
| LED4 |
Output4 indicator On: Output4 is active Off: Output4 is inactive |