Omron CJ1W-SCU32 Operation Manual page 321

Event name Tr (Receive Wait Monitoring Time) Exceeded
Meaning The receive waiting time exceeded the Receive Wait Monitoring Time.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
Noise
The monitoring time is shorter than
the actual completion time.
Attached Attached information 1: Port number where error was detected
information
Precautions/ None
Remarks
Event name FCS Check Error
Meaning One of the following errors occurred in the converted protocol at the serial gateway.
• When converting to CompoWay/F command: BCC error
• When converting to Modbus-RTU command: CRC error
• When converting to Modbus-ASCII command: CRC error
• When converting to Host Link FINS command: FCS error
Protocol Macros
• The check code attached to the received message does not match the check code that was calculated from the
received message.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
Noise
There was a mistake in the CRC code
that was attached to the command
frame.
Attached Attached information 1: Port number where error was detected
information
Precautions/ None
Remarks
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
Source details
Observation Recovery
Continues. Operation
Data type
---
Correction
Implement noise countermeasures.
Adjust the monitoring time to match
the actual completion time.
Source details
Observation Recovery
Continues. Operation
Data type
---
Correction
Implement noise countermeasures.
Increase the setting for the number of
resends in the device that sent the
command.
If required, perform retry processing
for communications.
Attach the correct CRC code.
9 Troubleshooting and Maintenance
Event code 64A20000 hex
CJ-series Unit Detection
timing
--- Log category
Not affected.
Name
---
Prevention
Use the Unit away from sources of
noise. Implement noise countermea-
sures.
Adjust the monitoring time to match
the actual completion time.
Event code 64A30000 hex
CJ-series Unit Detection
timing
--- Log category
Not affected.
Name
---
Prevention
Use the Unit away from sources of
noise. Implement noise countermea-
sures.
Increase the setting for the number of
resends in the device that sends the
command.
If required, perform retry processing
for communications.
Attach the correct CRC code.
After serial com-
munications start
System
After serial com-
munications start
System
9
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