
9-47
9 Troubleshooting and Maintenance
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
9-5 Even
t L
ogs
9
9-5-3 Error De
scr
iptio
ns
Event name
Command Format Error
Event code
64A7 0000 hex
Meaning
An illegal function code or address was specified in a received Modbus-RTU command.
Source
PLC Function Module
Source details
CJ-series Unit
Detection
timing
During Modbus-
RTU Slave 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
An illegal function code, address, or
data was specified in a received Mod-
bus-RTU command.
Check the format of the Modbus-RTU
command and correct the Modbus-
RTU command at the device that sent
the Modbus-RTU command.
Check the format of the Modbus-RTU
command to create a Modbus-RTU
command.
Attached
information
Attached information 1: Port number where error was detected
Precautions/
Remarks
None
Event name
Transmission Error
Event code
8468 0000 hex
Meaning
A transmission error occurred.
Source
PLC Function Module
Source details
CJ-series Unit
Detection
timing
After serial com-
munications start
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 of the following errors occurred.
•
Tfs (Send Finished Monitoring
Time) Exceeded
•
Tfr (Receive Finished Monitoring
Time) Exceeded
•
Tr (Receive Wait Monitoring Time)
Exceeded
•
FCS Check Error
•
Command Error
•
Timeout Error
•
Overrun Error
•
Framing Error
•
Parity Error
See which error occurs from the Sys-
mac Studio or an NS-series PT and
take suitable measures.
Refer to the measures for the errors
listed as causes to prevent the errors
from occurring.
Attached
information
Attached information 1: Port number where error was detected
Precautions/
Remarks
In Protocol Macro Mode, this error does not occur if communications recover within the specified number of retries.
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...