Mitsubishi Electronics FX3G User Manual

FX

3S

/FX

3G

/FX

3GC

/FX

3U

/FX

3UC

 Series

Programming Manual - Basic & Applied Instruction Edition

38 Error Check Method and Error Code List

FNC277

-F

NC2
79

Da

ta

 

Trans
fer 3

FNC28

0-F

NC
289

H

igh-Speed 

Process

ing 2

FNC2

90-
FNC299

Ex

tensi

on Fi
le

 

Register C

ontrol

FN

C300-

FNC30

5

FX

3U

-C

F-

AD

P

SFC

•STL

Programming

Interrupt 

Function

Sp

ec

ia

l D

evi

ce

E

rror Code

Ve

rsi

on U

p 

Inform

ati

on

Ex

ecuti

on

 T

imes

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 FX

3U

/FX

3UC

 

PLCs Ver. 2.61 or later)

-

Read-protect the execution program for block 
passwords (supported in FX

3U

/FX

3UC

 PLCs Ver. 

3.00 or later)

-

FX

3U

-FLROM-1M (supported in FX

3U

/FX

3UC

 

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.