Status LEDs
| LED | Display | Meaning | 
|---|---|---|
| L/A IN | lit | LINK: connection to the previous EtherCAT device. | 
| flashes | ACT: communication with the previous EtherCAT device. | |
| L/A OUT | lit | LINK: connection to the following EtherCAT P device. | 
| flashes | ACT: communication with the following EtherCAT P device. | |
| Run | flashes uniformly | The device is in „Pre-Operational“ state. | 
| flashes sporadically | The device is in „Safe-Operational“ state. | |
| lit | The device is in „Operational“ state. | |
| Us (output) | lit 1) | The EtherCAT P output outputs the supply voltage US. | 
| Up (output) | lit 2) | The EtherCAT P output outputs the supply voltage UP. | 
| Us (input) | lit | US is present at the supply voltage input. | 
| Up (input) | lit | UP is present at the supply voltage input. | 
1) If the LED „Us (output)“ is dark and „Us (input)“ is lit, the output voltage US has probably been turned off due to a short-circuit.
Restart after short-circuit shutdown 
2) If the LED „Up (output)“ is dark and „Up (input)“ is lit, the output voltage UP has probably been turned off due to a short-circuit.
Restart after short-circuit shutdown