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139
FX3S Series Programmable Controllers
User's Manual - Hardware Edition
11
Built-in Analog
12
Output Wiring
13
Wiring for
Various Uses
14
Test Run,
Maintenance,
Troubleshooting
15
Other Extension
Units and
Options
16
Display Module
(FX
3S
-5DM)
17
Memory
Cassette
A
Special Devices
(M8000-, D8000-)
B
Instruction List
C
Discontinued
models
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.6 Judgment by Error Codes and Representation of Error Codes
Operation error [M8067 (D8067)]
6757
Continues
operation
<Limit cycle method>
Auto tuning result exceeds proportional gain. (KP = outside
range from 0 to 32767)
<Auto tuning is finished (KP = 32767). PID operation is
started.>
The variation of the measured value (PV) is small compared
with the output value. Multiply the measured value (PV) by
"10" so that the variation of the measured value will increase
during auto tuning.
6758
<Limit cycle method>
Auto tuning result exceeds integral time.
(TI = outside range from 0 to 32767)
<Auto tuning is finished (KP = 32767). PID operation is
started.>
The auto tuning time is longer than necessary.
Increase the difference (ULV - LLV) between the upper limit
and lower limit of the output value for auto tuning, set a
smaller value to the input filter constant (), or set a smaller
value to the PV threshold (SHPV) for auto tuning, and then
check the result for improvement.
6759
<Limit cycle method>
Auto tuning result exceeds derivative time.
(TD = outside range from 0 to 32767)
6760 ABS data read from servo sum check error
Check servo wiring and parameter setting. Also check ABS
instruction.
6762
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
Input (X) specified by DSZR or ZRN instruction is already
used in another instruction.
Check to make sure the input (X), as specified by DSZR or
ZRN instruction, is not being used for the following purposes:
- Input interrupt
- High-speed counter C235 to C255
- Pulse catch M8170 to M8175
- SPD 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.
6770 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.
6772 EEPROM memory cassette is protected against writing.
The write-protect switch of the EEPROM memory cassette
was set to ON when data was transferred to the EEPROM
memory.
USB communication error [M8487 (D8487)]
8702
Continues
operation
Communication character error
Confirm the cable connection between programming device
and the PLC. This error may occur when a cable is
disconnected and reconnected during PLC monitoring.
8703 Communication data sum check error
8704 Data format error
8705 Command error
8730 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.
Special parameter error [M8489 (D8489)]
8101
Continues
operation
Special parameter setting time-out error
Turn OFF the power, and check the power supply and
connection of special adapters.
8102 Special parameter setting error
Special parameters are set improperly.
• Confirm troubleshooting for special adapters and set
special parameters correctly.
• Set special parameters correctly, turn OFF the power, and
then turn ON the power.
8103 Special parameter transfer target unconnected error
Special parameters are set, but special adapters/special
blocks are not connected.
Check whether special adapters is connected.
8104 Special parameter unsupported function
Check that special parameters with unsupported settings are
not set for connected special adapters.
Error
code
PLC
operation
at error
occurrence
Contents of error Action