890
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
38 Error Check Method and Error Code List
38.4 Error Code List and Action
*1.
The unit number 0 to 7 of the special function unit/block error is put in
.
*2.
Available in the FX
3U
/FX
3UC
PLC Ver. 3.00 or later.
Operation error [M8067(D8067)]
6762
Continues
operation
Port specified by inverter communication instruction is
already used in another communication.
Check to make sure the port is not specified by another
instruction.
6763
1) Input (X) specified by a DSZR, DVIT or ZRN
instruction is already used in another instruction.
2) The interrupt signal device for a DVIT instruction is
outside the allowable setting range.
1) Check to make sure the input (X), as specified by a
DSZR, DVIT or ZRN instruction, is not being used for
the following purposes:
-
Input interrupt (including the delay function)
-
High-speed counter C235 to C255
-
Pulse catch M8170 to M8177
-
SPD instruction
2) Check the contents of D8336 for the correct interrupt
signal specification for a DVIT instruction.
6764
Pulse output number is already used in a positioning
instruction or pulse output instruction (PLSY, PWM,
etc.).
Check to make sure the pulse output destination is not
being driven by another positioning instruction.
6765
Number of applied instruction exceeds limit.
Verify that the number of times that applied instructions
are used in the program does not exceed the specified
limit.
6770
•
FX
3U
/FX
3UC
Series PLC
Writing error to flash memory cassette.
•
FX
3G
Series PLC
EEPROM 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.
6771
Memory cassette is not connected.
Check for the correct attachment of the memory cassette.
6772
Memory cassette is protected against writing.
The write-protect switch of the memory cassette was set
to ON when data was transferred
to the flash memory. Set the protect switch to OFF.
6773
Access error to memory cassette during writing in RUN
mode
While data was written in the RUN mode, data was
transferred to (read from or written to) the memory
cassette.
Special block error [M8449 (D8449)]
020
*1
Continues
operation
General data sum error
Verify that extension cables are correctly connected.
021
*1
General data message error
030
*1
General data writing error to memory cassette.
When the memory cassette is used, check whether it is
mounted correctly.
If the problem persists, consult your local Mitsubishi
Electric representative.
080
*1
FROM/TO error
This error occurs in the execution of operation.
•
Review the program and check the contents of the
operands used in applied instructions.
•
Verify that specified buffer memories exist in the
counterpart equipment.
•
Verify that extension cables are correctly connected.
090
*1
Peripheral equipment access error
•
Check the cable connection between the
programming panel (PP) / programming device and
the PLC.
•
Verify that extension cables are correctly connected.
Error
bit
PLC operation at
error occurrence
Contents of error
Action
Special block error condition [D8166]
*2
b0
Continues
operation
Unit 0 access error
This error occurs when an operation is executed or when
the END instruction is executed.
•
Review the program and check the contents of the
operands used in applied instructions.
•
Verify that the specified buffer memories exist in the
counterpart equipment.
•
Verify that extension cables are correctly connected.
b1
Unit 1 access error
b2
Unit 2 access error
b3
Unit 3 access error
b4
Unit 4 access error
b5
Unit 5 access error
b6
Unit 6 access error
b7
Unit 7 access error
b8 to
b15
⎯
Not available
Error
code
PLC operation at
error occurrence
Contents of error
Action
