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9 Troubleshooting and Maintenance
9-38
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
Event name
System Setup Error
Event code
34A4 0000 hex
Meaning
There is an error in the system settings for the Serial Communications Unit.
Source
PLC Function Module
Source details
CJ-series Unit
Detection
timing
At power ON or
Controller reset
Error attributes
Level
Minor fault
Recovery
Cycle the power
supply or reset
the Controller.
Log category
System
Effects
User program
Continues.
Operation
Operation will be performed using the default setting for
the baud rate if there is an error in the baud rate setting.
Communications are not possible if there is an error in
other system settings.
System-defined
variables
Variable
Data type
Name
None
---
---
Cause and
correction
Assumed cause
Correction
Prevention
There is an error in the system set-
tings for the Serial Communications
Unit.
Check the system settings for the
Serial Communications Unit and cor-
rect any problems.
Make the correct system settings for
the Serial Communications Unit.
Attached
information
Attached information 1: Port number where error was detected
Precautions/
Remarks
None
Event name
DTR Check Error
Event code
0475 0000 hex
Meaning
An error was found during the DTR check.
Source
PLC Function Module
Source details
CJ-series Unit
Detection
timing
During loopback
test
Error attributes
Level
Observation
Recovery
---
Log category
System
Effects
User program
Continues.
Operation
Not affected.
System-defined
variables
Variable
Data type
Name
None
---
---
Cause and
correction
Assumed cause
Correction
Prevention
Loopback test jig failure.
Correct any mistakes in wiring the
loopback test jig.
Check the wiring of the loopback test
jig.
Noise
Implement noise countermeasures.
Use the Unit away from sources of
noise. Implement noise countermea-
sures.
The communications circuits in the
Serial Communications Unit are
faulty.
Replace the Unit.
None
Attached
information
Attached information 1: Port number where error was detected
Precautions/
Remarks
None
Содержание CJ1W-SCU22
Страница 192: ...4 Using Protocol Macros 4 56 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 250: ...6 No protocol Mode 6 22 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 460: ...A Standard System Protocol R 126 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 473: ...Index 1 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494 I Index...