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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
38 Error Check Method and Error Code List
38.4 Error Code List and Action
31
FNC277-FNC279
Data
Transfer 3
32
FNC280-FNC289
High-Speed
Processing 2
33
FNC290-FNC299
Extension File
Register Control
34
FNC300-FNC305
FX
3U
-CF-ADP
35
SFC•STL
Programming
36
Interrupt
Function
37
Special Device
38
Error Code
A
Version Up
Information
B
Execution Times
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 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.
Parameter error [M8064(D8064)]
0000 ⎯ No error
6401
Stops
operation
Program sum check error
• STOP the PLC, and correctly set the parameters.
• Check that the following functions are not used with
an unsupported PLC version when a memory
cassette is attached:
- Permanent PLC lock (supported in FX3U/FX3UC
PLCs Ver. 2.61 or later)
- Read-protect the execution program for block
passwords (supported in FX3U/FX3UC PLCs Ver.
3.00 or later)
-FX3U-FLROM-1M (supported in FX3U/FX3UC
PLCs Ver. 3.00 or later)
6402 Memory capacity setting error
6403 Latched device area setting error
6404 Comment area setting error
6405 File register area setting error
6406
Special unit (BFM) initial value setting, positioning
instruction setting sum check error
6407
Special unit (BFM) initial value setting, positioning
instruction setting error
6409 Other setting error
6411
Built-in CC-Link/LT special function block invalid
parameter settings (LT-2 dedicated area).
• STOP the PLC, and correctly set the parameters.
• Set parameters correctly, turn OFF the power, and
then turn ON the power.
6412
Built-in CC-Link/LT special function block parameter
settings sum check error (special function settings area).
6413
Built-in CC-Link/LT special function block parameter
settings sum check error (LT-2 dedicated area).
6420 Special parameter sum check error
• STOP the PLC, and correctly set the parameters.
• Set special parameters correctly, turn OFF the power,
and then turn ON the power.
6421 Special parameters setting error
• Check the contents of the special parameter error
code (D8489), confirm troubleshooting for special
adapters/special blocks, and set special parameters
correctly.
• Set special parameters correctly, turn OFF the power,
and then turn ON the power.
Error
code
PLC operation at
error occurrence
Contents of error Action