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FX3G/FX3U/FX3UC 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 .
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 DSZR, DVIT or ZRN
instruction is already used in another instruction.
2) The interrupt signal device for DVIT instruction is
outside the allowable setting range.
1) Check to make sure the input (X), as specified by
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 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.
Check whether the number of times that applied
instructions are used in the program does not exceed the
specified limit.
6770
•FX
3U/FX3UC Series PLC
Writing error to flash memory cassette.
•FX
3G Series PLC
EEPROM access error.
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
Check for the correct connection of extension cables.
021
*1
General data message error
080
*1
FROM/TO error
This error occurs in the execution of operation.
• Review the program, or check the contents of the
operands used in the applied instructions.
• Check whether the specified buffer memories exist in
the counterpart equipment.
• Check for the correct connection of extension cables.
090
*1
Peripheral equipment access error
• Check the cable connection between the
programming panel (PP) / programming device and
the PLC.
• Check for the correct connection of extension cables.
Error
code
PLC operation at
error occurrence
Contents of error Action