Mitsubishi FX3G SERIES User Manual page 191

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
Continues
Port specified by inverter communication instruction is already
operation
6762
used in another communication.
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 EEPROM 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
Continues
*1
FROM/TO error
080
operation
*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 (including the delay function)
- 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.
The write-protect switch of the EEPROM memory cassette
was set to ON when data was transferred to the EEPROM
memory.
Check for the correct connection of extension cables.
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.
• Check the cable connection between the programming
panel (PP) / programming device and the PLC.
• Check for the correct connection of extension cables.
.
11
12
PID operation is
PID operation is
13
) for auto tuning, and then
14
15
16
17
18
19
20
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