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9-27
9 Troubleshooting and Maintenance
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
9-4 Err
o
r L
ogs
9
9-4-2 Error Co
ntents and Details
0300 Hex
Parameter packet dis-
carded
Same contents as event send/receive errors.
No
0301 Hex
Protocol macro operation
error
01 Hex: Port 1
02 Hex: Port 2
Protocol macro error code
No
0302 Hex
Illegal protocol packet dis-
carded.
01 Hex: Port 1
02 Hex: Port 2
Always 00 Hex
No
0601 Hex
Unit error
Check the operating environment.
Yes
0602 Hex
Special Unit Memory Error
01 Hex: Read error
02 Hex: Write error
06 Hex: Error log
07 Hex: Protocol data
No
Error code
Error contents
Details
Stored in
EEPROM
First byte
Second byte