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FX3S Series Programmable Controllers
User's Manual - Hardware Edition
11
Built-in Analog
12
Output Wiring
13
Wiring for
Various Uses
14
Test Run,
Maintenance,
Troubleshooting
15
Other Extension
Units and
Options
16
Display Module
(FX
3S
-5DM)
17
Memory
Cassette
A
Special Devices
(M8000-, D8000-)
B
Instruction List
C
Discontinued
models
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.6 Judgment by Error Codes and Representation of Error Codes
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.
Error
code
PLC
operation
at error
occurrence
Contents of error Action
PLC hardware error [M8061 (D8061)]
0000 - No error
6101
Stops
operation
Memory access error
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.
6105 Watchdog timer error
Check user program.
The scan time exceeds the value stored in D8000.
PLC/PP communication error [M8062 (D8062)]
0000 - No error
6201
Continues
operation
Parity, overrun or framing error
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.
6202 Communication character error
6203 Communication data sum check error
6204 Data format error
6205 Command error
6230 Memory access error
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.
Serial communication error 1 [M8063 (D8063)]
0000 - No error
6301
Continues
operation
Parity, overrun or framing error
• 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.
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
6312 Parallel link character error
6313 Parallel link sum error
6314 Parallel link format error
6320 Inverter communication error
6321 MODBUS communication error
6330 Memory access error
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.
6340 Special adapter connection error Check connection of the special adapter.