ERROR
LED
State * Description
Off No error Device is in working condition
Single
flash
Warning
limit
reached
At least one of the error counters of the CAN controller has reached or
exceeded the warning level (too many error frames)
Double
flash
Error control
event
A guard event (NMT-slave or NMTmaster) or a heartbeat event (heartbeat
consumer) has occurred
Triple
flash
Sync error The sync message has not been received within the configured communication
cycle period time out
On Bus off The CAN controller is bus off
The CANopen RUN LED indicates the status of the CANopen network state machine. Next table shows the
CANopen RUN LED truth table:
RUN LED *State Description
Off Off The device is switched off
Blinking Pre-operational The device is in state PREOPERATIONAL
Single flash Stopped The device is in state STOPPED
On Operational The device is in state OPERATIONAL
See the description of the states next:
* Possible
LED States
Description
ON The LED is always on
OFF The LED is always off
Single flash One short flash (~200 ms) followed by a long off phase (~1000 ms)
Double flash Sequence of 2 short flashes (~200 ms), separated by an off phase (~200 ms). The
sequence is finished by a long off phase (~1000 ms)
Triple flash Sequence of 3 short flashes (~200 ms), separated by an off phase (~200 ms). The
sequence is finished by a long off phase (~1000 ms)
Blinking On and off with a frequency of ~2.5 Hz: ON for ~200 ms followed by off for ~200 ms.
EtherCAT signalling LEDs
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