EtherCAT error [ERR]
LED (red)
Meaning
Remedy
Illuminated
serious communication error
Possible causes:
–
Application controller not respond-
ing
–
Watchdog timeout due to ESC
Contact Festo Service
è
Flashing
Configuration error, no network connec-
tion
Possible causes:
–
Line interrupted
–
No connection to master
–
Master is not active
Check network connections.
Check the configuration and addressing
of the interface.
flashes 1x
briefly
EtherCAT state change from Operational
to Safe-Operational due to synchronisa-
tion error
–
flashes 2x
briefly
Application watchdog timeout
Watchdog timeout due to sync manager
–
flickers
Booting error
Error (checksum) in application control-
ler flash memory
–
Off
No error
–
Tab. 25 EtherCAT error [ERR] LED
Diagnostics and Fault Clearance
30
Festo — CPX-AP-I-EC-M12 — 2019-11