FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
287
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.6 Judgment by Error Codes and Representation of Error Codes
11
High-Speed
Counters
12
Output Wiring
13
Wiring for
Various Uses
14
Test Run,
Maintenance,
Troubleshooting
15
IInput/Output
Powered
Extension Units
16
Input/Output
Extension
Blocks
17
Extension
Power Supply
Unit
18
Other Extension
Units and
Options
19
Display Module
20
Terminal Block
*1. The unit number 0 to 7 of the special function unit/block error is put in .
*2.
"
" indicates the following values for each special adapter/special block where an error has
occurred.
If an error has occurred in 2 or more special adapters/special blocks, "
" indicates the lowest unit
number among the special adapters/special blocks in which an error has occurred.
Operation error [M8067(D8067)]
6771
Continues
operation
Memory cassette is not connected.
Check whether the memory cassette is mounted
correctly.
6772 Memory cassette is write protected.
The write-protect switch of the memory cassette was
set to ON when data was transferred to the flash
memory.
6773
Access error to flash memory during writing in RUN
mode
While data was written in the RUN mode, data was
transferred to (read from or written to) the flash
memory.
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
022
*1
System access error
025
*1
Access sum error in other station via CC-Link
026
*1
Message error in other station via CC-Link
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, something may be
malfunctioning inside the PLC. 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 the 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.
Special parameter error [M8489 (D8489)]
01
*2
Continues
operation
Special parameter setting time-out error
Turn OFF the power, and check the power supply
and connection of special adapters/special blocks.
02
*2
Special parameter setting error
Special parameters are set improperly.
• 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.
03
*2
Special parameter transfer target unconnected
error
Special parameters are set, but special adapters/
special blocks are not connected.
Check whether special adapters/special blocks
are connected.
04
*2
Special parameter unsupported function
Check that special parameters with unsupported
settings are not set for connected special
adapters/special blocks.
Value of
(decimal) Special adapter/special block where an error has occurred
00 Special block (Unit number 0)
10 Special block (Unit number 1)
20 Special block (Unit number 2)
30 Special block (Unit number 3)
40 Special block (Unit number 4)
50 Special block (Unit number 5)
60 Special block (Unit number 6)
70 Special block (Unit number 7)
81 Special adapter (Communication channel 1)
82 Special adapter (Communication channel 2)
Error
code
PLC operation at
error occurrence
Contents of error Action
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