Festo CPX-FB23, Electronic Manual

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3. Diagnosis and error treatment
3−13
Festo P.BE−CPX−FB23−EN en 0308NH
3.3.4 Possible operating states of the CPX LEDs
LED status Meaning
RUN ERROR SD RD
Normal communication, but frequent CRC faults
(e.g. due to interference signals/noise).
The setting of the baud rate or the station address
has been modified since the last bus initialization.
The field bus node cannot replay; the data received
cause a CRC fault.
Normal communication.
No data for the master.
Field bus node replies to a request for data, but the
Refresh Reception has caused a CRC fault.
Data for the master causes a CRC fault.
Connection initialization has failed.
Either no data for the master
or data for the slave cannot be received (e.g. due to
interference signals/noise).
No data reception possible, e.g. due to wire fracture,
etc., Power Off/On required?
,
Fault in baud rate and/or CC−Link slave address.
LED lights up LED flashes LED is out
Tab.3/3: Overview of CPX LEDs