Status LEDs
There is a green LED next to each EtherCAT socket. The LED signals the communication state of the respective socket.
LED  | Meaning  | 
|---|---|
off  | no connection to the connected EtherCAT device  | 
lit  | LINK: connection to the connected EtherCAT device  | 
flashes  | ACT: communication with the connected EtherCAT device  |