Omron CJ1W-PNT21 Operation Manual page 133

Troubleshooting using the IO Controller indicators
8-2-3-4 Memory access errors
Special Unit error
7-segment
--
Memory access error
7-segment
E9
IO Controller Unit response
The Unit is not capable to communicate on the PROFINET network and
therefore control to the IO Devices will be lost. he Unit will stop processing.
Records the error in the errorlog.
CIO Area Flags allocated to the IO Controller Unit
IO Controller status 2 (word n+6) bit 03 will be ON
Correction
Check the ethernet network for possible causes of disturbance. This can be
EMC influences, broken or shorted Ethernet cable, faulty connectors,
defective Ethernet switches or IO Devices and grounding problems to name a
few. This will result in interrupted data streams or broken messages.
/i
MS indicator
ON (red)
Likely cause
The PROFINET IO controller encountered an internal error and can not
continue.
IO Controller Unit response
The Unit will stop processing. Records the error in the errorlog.
CIO Area Flags allocated to the IO Controller Unit
None of the bits is set.
Correction
Restart the IO Controller. Replace the IO-Controller if the error recurs.
/i
MS indicator
Flashing (green)
Likely cause
The PROFINET lO Controller encountered accessing its internal memory.
IO Controller Unit response
The Unit will stop processing. Records the error in the errorlog.
CIO Area Flags allocated to the IO Controller Unit
None of the bits is set.
Correction
Restart the IO Controller. Replace the IO-Controller if the error recurs.
NS indicator
OFF
NS indicator
Flashing (red)
Section 8-2
Error log (Hex)
0601
Error log (Hex)
0602
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