FC1121 - LED displays

RUN LED

LED	Color	Meaning
Run	green	This LED indicates the card's operating state:
		off	State of the EtherCAT State Machine: INIT = initialization of the terminal or BOOTSTRAP = function for firmware updates of the terminal
		flashing	State of the EtherCAT State Machine: PREOP = function for mailbox communication and different standard-settings set
		single flash	State of the EtherCAT State Machine: SAFEOP = verification of the Sync Manager channels and the distributed clocks. Outputs remain in safe state
		on	State of the EtherCAT State Machine: OP = normal operating state; mailbox and process data communication is possible

Error LED

The ERR LED indicates local errors and application errors. It is either connected to the application controller or to the ESC (optional ESC feature). If it is connected to the ESC, some errors are automatically indicated by the ESC, other error states are detected by the application controller and indicated by writing to the ERR LED override register 0x0139.

The following ERR LED states can be automatically generated by an ESC, without interaction of an application controller. The support of individual error states is ESC specific.

LED	Color	Meaning
Error	red	State	Description	Examples
		off	no error
		flickering (fast)	SII EEPROM loading error	no SII EEPROM device, SII CRC error
		blinking (slow)	invalid hardware configuration	ESC pin sharing violation
		single flash	AL status register error indication bit 0x0130[4] is set while device emulation is disabled.	local application controller sets error indication bit NOTE: E.g.: If the μController makes a state change with error indication bit 0x0130[4] set after a process data watchdog timeout, it has to manually set the ERR LED to Double Flash again. Otherwise the ESC would generate a single flash due to the error indication bit automatically.
		double flash	Process data watchdog timeout (edge detected) while device is OPERATIONAL	master is disconnected/not sending process data any more
		om	PDI watchdog timeout (edge detected) or build-in self-test error	local application controller failure or self-test failure