I-51
FX Series PLC User's Manual - Data Communication Edition
Remote Maintenance
8 Troubleshooting
8.8 Checking Absence/Presence of Errors
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter
Communication
F
Non-Protocol
Communication
(RS/RS2 Instruction)
G
Non-Protocol
Communication
(FX
2N
-232IF)
H
Programming
Communication
I
Remote
Maintenance
Apx.
Discontinued
models
8.8 Checking Absence/Presence of Errors
In FX3U and FX3UC Series, an error occurs when modem initialization is not possible.
Verify that an error has not occurred.
1. Checking M8063
When a communication error occurs, M8063 turns ON and D8063 stores the corresponding error code.
2. Checking the error code
D8063 stores one of the following error codes:
When modem initialization is disabled, D8063 stores the error code 6307.
If D8063 stores any error code shown above, check the following items:
• Wiring
• Modem specifications
Error code Contents of error
D8063
6301 Parity error, overrun error or framing error
6302 Defective communication character
6303 Communication data sum mismatch
6304 Defective data format
6305 Defective command
6306 Monitoring timeout
6307 Modem initialization error
6308 N:N Network parameter error
6312 Parallel link character error
6313 Parallel link sum error
6314 Parallel link format error
6320 Error in communication with inverter