Mitsubishi FX3U-?*MR/ES User Manual page 291

FX Series Programmable Controllers
3U
User's Manual - Hardware Edition
Error PLC operation at
code error occurrence
Parameter error [M8064(D8064)]
⎯
0000
6401
6402
6403
6404
6405
6406
6407
6409
Stops
operation
6420
6421
Syntax error [M8065(D8065)]
⎯
0000
6501
6502
6503
Stops
6504
operation
6505
6506
6507
6508
6509
6510
Circuit error [M8066(D8066)]
⎯
0000
6610
6611
6612
6613
6614
Stops
6615
operation
6616
6617
6618
Contents of error
No error
Program sum check error
Memory capacity setting error
Latched device area setting error
Comment area setting error
File register area setting error
Special unit (BFM) initial value setting, positioning
instruction setting sum check error
Special unit (BFM) initial value setting, positioning
instruction setting error
Other setting error
Special parameter sum check error
Special parameters setting error
No error
Incorrect combination of instruction, device symbol
and device number
No OUT T or OUT C before setting value
• No setting value after OUT T or OUT C
• Insufficient number of operands for an applied
instruction
• Same label number is used more than once.
• Same interrupt input or high-speed counter input
is used more than once.
Device number is out of allowed range.
Invalid instruction
Invalid label number [P]
Invalid interrupt input [I]
Other error
MC nesting number error
No error
LD, LDI is continuously used 9 times or more.
More ANB/ORB instructions than LD/LDI
instructions
Less ANB/ORB instructions than LD/LDI
instructions
MPS is continuously used 12 times or more.
No MPS instruction
No MPP instruction
No coil between MPS, MRD and MPP, or incorrect
combination
Instruction below is not connected to bus line:
STL, RET, MCR, P, I, DI, EI, FOR, NEXT, SRET,
IRET, FEND or END
STL, MC or MCR can be used only in main
program, but it is used elsewhere (e.g. in interrupt
routine or subroutine).
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.6 Judgment by Error Codes and Representation of Error Codes
• STOP the PLC, and correctly set the parameters.
• Check that the following functions are not
used with an unsupported PLC version when a
memory cassette is attached:
- Permanent PLC lock (supported in Ver. 2.61
or later)
- Read-protect the execution program for
block passwords (supported in Ver. 3.00 or
later)
- FX -FLROM-1M (supported in Ver. 3.00
3U
or later)
• STOP the PLC, and correctly set the special
parameters.
• Set special parameters correctly, turn OFF the
power, and then turn ON the power.
• Check the contents of the special parameter error
code (D8489), 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.
During programming, each instruction is checked. If
a syntax error is detected, modify the instruction
correctly.
This error occurs when a combination of instructions
is incorrect in the entire circuit block or when the
relationship between a pair of instructions is
incorrect.
Modify the instructions in the program mode so that
their mutual relationship becomes correct.
Action
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