Error Code List And Action - Mitsubishi Electric MELSEQ FX3S Series User Manual

FX Series Programmable Controllers
3S
User's Manual - Hardware Edition

14.6.3 Error Code List and Action

When a program error occurs in the PLC, the error code is stored in special data registers D8061 to D8067,
D8487 and D8489. Take action based on the following information.
PLC
Error operation
code at error
occurrence
PLC hardware error [M8061 (D8061)]
0000 - No error
6101 Memory access error
Stops
operation
6105 Watchdog timer error
PLC/PP communication error [M8062 (D8062)]
0000 - No error
6201 Parity, overrun or framing error
6202 Communication character error
6203 Communication data sum check error
6204 Data format error
Continues
6205 Command error
operation
6230 Memory access error
Serial communication error 1 [M8063 (D8063)]
0000 - No error
6301 Parity, overrun or framing error
6302 Communication character error
6303 Communication data sum check error
6304 Communication data format error
6305 Command error
6306 Communication time-out detected
6307 Modem initialization error
6308 N:N network parameter error
6309 N:N Network setting error
Continues
6312 Parallel link character error
operation
6313 Parallel link sum error
6314 Parallel link format error
6320 Inverter communication error
6321 MODBUS communication error
6330 Memory access error
6340 Special adapter connection error
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.6 Judgment by Error Codes and Representation of Error Codes
Contents of error Action
When the memory cassette is used, check whether it is
mounted correctly.
If the problem persists or if the memory cassette is not used,
something may be malfunctioning inside the PLC. Consult
your local Mitsubishi Electric representative.
Check user program.
The scan time exceeds the value stored in D8000.
Check the cable connection between the programming panel
(PP) / programming device and the PLC. This error may occur
when a cable is disconnected and reconnected during PLC
monitoring.
When the memory cassette is used, check whether it is
mounted correctly.
If the problem persists or if the memory cassette is not used,
something may be malfunctioning inside the PLC. Consult
your local Mitsubishi Electric representative.
• Ethernet communication, Inverter communication,
computer link and programming:
Ensure that the parameters are correctly set according to
their applications.
• N:N network, parallel link, MODBUS communication, etc.:
Check programs according to applications.
• Remote maintenance:
Ensure modem power is ON and check the settings of the
AT commands.
• Wiring:
Check the communication cables for correct wiring.
When the memory cassette is used, check whether it is
mounted correctly.
If the problem persists or if the memory cassette is not used,
something may be malfunctioning inside the PLC. Consult
your local Mitsubishi Electric representative.
Check connection of the special adapter.
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A
B
C
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