Mitsubishi Electric MELSEC-F FX3G Series User Manual page 227

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
PLC
Error operation
code at error
occurrence
Operation error [M8067(D8067)]
<Limit cycle method>
6757 Auto tuning result exceeds proportional gain. (K
range from 0 to 32767)
<Limit cycle method>
6758 Auto tuning result exceeds integral time.
(T = outside range from 0 to 32767)
I
<Limit cycle method>
6759 Auto tuning result exceeds derivative time.
(T = outside range from 0 to 32767)
D
6760 ABS data read from servo sum check error
Port specified by inverter communication instruction is already
6762
used in another communication.
Continues
operation
Input (X) specified by DSZR or ZRN instruction is already
6763
used in another instruction.
Pulse output number is already used in a positioning
6764
instruction or pulse output instruction (PLSY, PWM, etc.).
6765 Number of applied instruction exceeds limit.
6770 Memory access error
6772 EEPROM memory cassette is protected against writing.
Special block error [M8449(D8449)]
*1
General data sum error
020
*1
General data message error
021
*1
System access error
022
*1
Access sum error in other station via CC-Link
025
*1
Message error in other station via CC-Link
026
Continues
operation
*1
FROM/TO error
080
*1
Peripheral equipment access error
090
*1. The unit number 0 to 7 of the special function unit/block error is put in
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.6 Judgment by Error Codes and Representation of Error Codes
Contents of error
= outside
P
Action
<Auto tuning is finished (K = 32767).
P
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.
<Auto tuning is finished (K = 32767).
P
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 (SH
PV
check the result for improvement.
Check servo wiring and parameter setting. Also check ABS
instruction.
Check to make sure the port is not specified by 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
Check to make sure the pulse output destination is not being
driven by another positioning instruction.
The number of times an applied instruction is used in the
program exceeds the specified limit.
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.
The write-protect switch of the EEPROM memory cassette
was set to ON when data was transferred to the EEPROM
memory.
Verify that extension cables are correctly connected.
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.
• Check the cable connection between the programming
panel (PP) / programming device and the PLC.
• Verify that extension cables are correctly connected.
.
11
12
PID operation is
PID operation is
13
) for auto tuning, and then
14
15
16
17
18
19
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