Omron CJ1W-EIP21 - 10-2010 Operation Manual page 381

Using the LED Indicators and Display for Troubleshooting
Errors Related to Memory
Access
Indicator
MS NS 7-segment
Flashing --- E9
red
The 7-segment display alternates between the node address and error code.
Error Cause
Memory An error
Access Error occurred in the
Unit's non-vola-
tile memory
itself. This error
will occur in the
following cases.
1. An error oc-
curred while
writing the er-
ror log.
2. An error oc-
curred while
writing the
device pa-
rameters.
Note:
This error does
not indicate
checksum errors
detected when
reading data.
Unit operation (Flag Error
status) log
(hex)
Case 1: 0602
The error record
remains in RAM only.
Subsequent writes to
non-volatile memory
are all ignored. Other
than that, normal
operation continues.
(Error records con-
tinue to be written to
RAM.)
Case 2:
Tag data links and
message communica-
tions will continue
operating.
The Unit Error
Occurred Flag (n+10,
bit 00), Unit Memory
Error Flag (n+10, bit
04), and Non-volatile
Memory Error Flag
(n+14, bit 15) will turn
ON.
Section 14-2
Countermeasure
Download the Unit
Setup from the tab
pages of the Edit
Parameters Dialog
Box of the CX-Pro-
grammer and
download the
device parameters
from the Network
Configurator. If the
error recurs,
replace the Ether-
Net/IP Unit or (for a
built-in EtherNet/IP
port) the CPU Unit.
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