Error Behaviour - Mitsubishi Electric MELSEC-F FX3U-CAN User Manual

FX -CAN User's Manual
3U
5.7

Error Behaviour

If a serious CANopen
automatically shifts to the NMT state Pre-operational by default. Alternatively, the CANopen
configured to change to NMT state Stopped or remain in the current NMT state.
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CANopen device failures include the following communication errors:
• Bus-off conditions of the CAN interface
• Only as NMT Slave: Life guarding event with the state 'occurred' and the reason 'time out'
• Only as NMT Slave: Heartbeat event with state 'occurred' and the reason 'time out'
• PLC RUN → STOP: If the setting value is H01, the FX
set again to Operational when the PLC is in STOP.
With the setting value H00 or H02, the FX
STOP.
• FROM/TO Watchdog error: If the setting value is H01, the FX
can be set again to Operational when the BFM #29 bit 7 is set.
With the setting value H00 or H02, the FX
7 is set.
Severe CANopen
Object H1029 sub-index H01: Error behaviour object
Error class values
Value (hex)
00 Change to NMT state Pre-operational (only if currently in NMT state Operational)
No change of the NMT state.
01
Refer to different behaviour in case of PLC RUN → STOP.
02 Change to NMT state Stopped
03 to FF Not used
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device failure is detected in NMT state Operational, the CANopen
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device errors also may be caused by CANopen
Description
-CAN will change into Pre-operational but can be
3U
-CAN can not set into Operational as long as the PLC is in
3U
-CAN will change into Pre-operational but
3U
-CAN can not set into Operational as long as the BFM #29 bit
3U
→ For FROM/TO Watchdog, refer to Section 6.9
→ For FROM/TO Watchdog error, refer to Section 14.2
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device internal failures.
5 Introduction of Functions
5.7 Error Behaviour
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device
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device can be
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