Indicator Description
| Indicators | 
Description | 
| PWR (green) | 
Coupler power indicator: ON: normal module power supply; Off: The module is not powered or the power supply is abnormal. | 
| PWR_IO (green) | 
IO power indicator: ON: normal IO power supply; Off: IO power supply is not powered or the power supply is abnormal | 
| BF (red) | 
Bus fault indicator: always ON: configuration error; Off: normal module | 
| RUN (yellow) | 
Bus communication indicator: flashing: normal module; Off: abnormal communication | 
Last modified: 2025-07-01