Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 324 / 478

9 Troubleshooting and Maintenance
9-46
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
Event name Comparison Error Event code 64A5 0000 hex
Meaning A comparison error occurred.
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
Event name Reception Overflow Event code 64A6 0000 hex
Meaning More than the specified amount of receive data was received in No-protocol Mode.
Source PLC Function Module Source details CJ-series Unit Detection
timing During No-proto-
col Mode
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
One or more bytes of data was
received after the completion the
reception. Execute the SerialRcv/SerialRcvNo-
Clear instruction again after the
Reception Completed Flag changes
to TRUE. Review the communications period
with the remote device.
Attached
information Attached information 1: Port number where error was detected
Precautions/
Remarks None