2. Installation
RC700 / RC90 Option Fieldbus I/O Rev.14 241
LED Description
LED state represents the states of the fieldbus Module.
RUN LED
EtherCAT device in ‘INIT’-state (or no
power)
EtherCAT device in ‘OPERATIONAL’-
state
EtherCAT device in ‘PRE-
OPERATIONAL’-state
EtherCAT device in ‘SAFE-
OPERATIONAL’-state
The EtherCAT device is in ‘BOOT’ state
If RUN and ERR turn red, this
indicates a fatal event, forcing the bus
interface to a physically passive state.
ERR LED
State change received from master is
not possible due to invalid register or
Slave device application has changed
the EtherCAT state autonomously.
Application watchdog
timeout
Sync manager watchdog timeout.
Controller failure
Anybus module in EXCEPTION.
If RUN and ERR turn red, this indicates
a fatal event, forcing the bus interface to
a physically passive state.
E.g. due to firmware download failure.
Link/Activity
Link not sensed (or no power)
Link sensed, no traffic detected
Link sensed, traffic detected