Mitsubishi FX3G Series User Manual

14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.6 Judgment by Error Codes and Representation of Error Codes
185
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
11
High-Speed Counters
12
Output Wiring
13
Wiring for Various Uses
14
Test Run, Maintenance, Troubleshooting
15
Input/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 .
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 (including the delay function)
- 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.
6765 Number of applied instruction exceeds limit.
The number of times an applied instruction is used in the
program exceeds the specified limit.
6770 EEPROM access error
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.
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

Mitsubishi FX3G Series Specifications

General

Model	FX3G Series
Power Supply	AC 100-240V or DC 24V
Program Capacity	32, 000 steps
Execution Speed	0.21 µs/basic instruction
Communication Options	RS-422, USB, Ethernet
Expansion Modules	Analog, digital, communication
Programming Language	Ladder Logic, Instruction List
Built-in Functions	High-speed counters, pulse output
Analog I/O	Available via expansion modules