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5-9
5 Error Processing, Maintenance and Inspection
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
5-3 Eve
n
t L
o
g
s
5
5-3-2 Error T
ab
le
The errors that may occur for this Unit are listed below. Event levels are given in the table as follows:
Maj: Major fault level
Prt: Partial fault level
Min: Minor fault level
Obs: Observation
Info: Information
Refer to the NJ-series Troubleshooting Manual (Cat. No. W503) for all of the event codes that may
occur in an NJ-series Controller.
5-3-2 Error Table
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
6801 0000 hex Unit Error An error occurred in
the High-speed
Counter Unit. • There is an error in the Special
Unit Setup.
• An overflow or underflow error
occurred.
• An illegal preset value was
used.
• A CPU Unit monitor error or bus
error occurred.
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