878
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
38 Error Check Method and Error Code List
38.4 Error Code List and Action
PLC hardware error [M8061(D8061)]
6103
Stops
operation
I/O bus error (M8069 = ON)
Verify that extension cables are correctly connected.
6104 Powered extension unit 24 V failure (M8069 = ON)
6105 Watchdog timer error
Confirm user program.
The scan time exceeds the value stored in D8000.
6106 I/O table creation error (CPU error)
• When turning the power ON to the main unit, a 24V
power failure occurs in a powered extension unit. (The
error occurs if the 24V power is not supplied for 10
seconds or more after main power turns ON.)
• When turning main power ON, I/O assignment to CC-
Link/LT (built into the FX
3UC-32MT-LT(-2) PLC) is
disabled.
6107 System configuration error
Check the number of connected special function units/
blocks. Some special function units/blocks have a
connection number limit.
6112
Changed settings for the built-in CC-Link/LT special
function block cannot be written to the attached flash
memory cassette.
Verify that the memory cassette is installed
correctly.
6113
Changed settings for the built-in CC-Link/LT special
function block cannot be written to the attached write-
protected flash memory cassette.
Set the protect switch to OFF.
6114
CC-Link/LT settings cannot be written to the built-in CC-
Link/LT special function block.
Set the configuration again.
If the problem persists, something may be malfunctioning
inside the PLC. Consult your local Mitsubishi Electric
representative.
6115
A built-in CC-Link/LT special function block EEPROM
writing time-out error occurred, or the built-in CC-Link/LT
special function block configuration could not be
completed normally in self CONFIG mode.
PLC/PP communication error (D8062)
Serial communication error 0 [M8062 (D8062)]
0000 ⎯ No error
6201
Continues
operation
Parity, overrun or framing error
Confirm the cable connection between the programming
panel (PP)/programming device and the PLC. This error
may occur when a cable is disconnected an reconnected
during PLC monitoring.
6202 Communication character error
6203 Communication data sum check error
6204 Data format error
6205 Command error
6230 Memory cassette write error
When the memory cassette is used, check whether it is
mounted correctly.
If the problem persists, something may be malfunctioning
inside the PLC. Consult your local Mitsubishi Electric
representative.
Error
code
PLC operation at
error occurrence
Contents of error Action
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