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6 Troubleshooting and Maintenance
6-12
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
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.
This section describes the information that is given for individual errors.
The items that are used to describe individual errors (events) are described in the following copy of an
error table.
6-5-2
Error Table
Event code
Event name
Meaning
Assumed cause
Level
Reference
Maj Prt Min Obs Info
04C60000 hex
Network
Power Error
CAN network power
is insufficient
•
Communications power is not
being supplied sufficiently from
the network
√
84C20000 hex
Send Queue
Overflow
The send queue
was overflowed
•
If the message rate exceeds
the
processing capacity of the
unit, a delay occurs.
•
The send queue was full
already when sending the mes-
sage.
√
84C3000 hex
Receive
Queue Over-
flow
The received queue
was overflowed
•
If the message rate exceeds
the
processing capacity of the
unit, a delay occurs.
•
The receive queue was full
already when receiving the
message.
√
84C40000 hex
Bus Off
Event
Bus off event EV5
(bus off) has
occurred
•
A buss off condition was
detected
√
6-5-3
Error Descriptions
Controller Error Descriptions
Event name
Gives the name of the error.
Event code
Gives the code of
the error.
Meaning
Gives a short description of the error.
Source
Gives the source of the error.
Source details
Gives details on
the source of the
error.
Detection
timing
Error attributes
Level
Tells the level of
influence on con-
trol.
*1
Recovery
Gives the recov-
ery method.
*2
Log category
Summary of Contents for CJ1W-CORT21
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