Visual Diagnostics of CANopen Processors
(Original Document)
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At a Glance
BMX P34 ••••• processors form the Modicon M340 range are equipped with several Module Status visualization LEDs.
BMX P34 2010/20102/2030/20302 processors equipped with a CANopen port have 2 LEDs on their facade that indicate the bus status:
In normal operation, the CAN ERR LED is off and the CAN RUN LED is on.
The following figures show the LEDs on the facade of modules:
LED Status
The following trend diagram represents the possible status of LEDs:
Description
The following table describes the role of CAN RUN and CAN ERR LEDs:
Display LED
On
Flash
Flashing
Off
Slow flashing
CAN RUN
(green)
The master is operational.
SImple: The master is stopped.
Triple : Loading of CANopen firmware in process.
The master is pre-operational or initialization in progress.
-
Starting CANopen master self-test.
CAN ERR
(red)
Bus stopped.
The CAN controller has status "BUS OFF".
The CAN network is disturbed.
Simple : at least one of the counters has attained or exceeded the alert level.
Double : Monitoring detected fault (Nodeguarding or Heartbeat)
Invalid configuration, or logic configuration different from physical configuration: missing, different or additional slaves detected.
OK.
An anomaly occured during the CANopen coprocessor start. The CANopen master cannot start. If this state is maintained, you must change the CPU.