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FX3S Series Programmable Controllers
User's Manual - Hardware Edition
14 Test Operation, Adjustment, Maintenance and Troubleshooting
14.6 Judgment by Error Codes and Representation of Error Codes
Parameter error [M8064 (D8064)]
0000 - No error
6401
Stops
operation
Program sum check error
STOP the PLC, and correctly set the parameters.
6402 Memory capacity setting error
6404 Comment area setting error
6405 File register area setting error
6420 Special parameter sum check error
• STOP the PLC, and correctly set the special parameters.
• Set special parameters correctly, turn OFF the power, and
then turn ON the power.
6421 Special parameters setting error
• 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.
Syntax error [M8065 (D8065)]
0000 - No error
6501
Stops
operation
Incorrect combination of instruction, device symbol and device
number
During programming, each instruction is checked. If a syntax
error is detected, modify the instruction correctly.
6503
• No setting value after OUT T or OUT C.
• Insufficient number of operands for an applied instruction.
6504
• Same label number is used more than once.
• Same interrupt input or high-speed counter input is used
more than once.
6505 Device number is out of allowed range.
6506 Invalid instruction
6507 Invalid label number [P]
6508 Invalid interrupt input [I]
6510 MC nesting number error
Circuit error [M8066 (D8066)]
0000 - No error
6610
Stops
operation
LD, LDI is continuously used 9 times or more.
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.
6611 More ANB/ORB instructions than LD/LDI instructions
6612 Less ANB/ORB instructions than LD/LDI instructions
6613 MPS is continuously used 12 times or more.
6614 No MPS instruction
6615 No MPP instruction
6616
No coil between MPS, MRD and MPP, or incorrect
combination
6617
Instruction below is not connected to bus line:
STL, RET, MCR, P, I, DI, EI, FOR, NEXT, SRET, IRET, FEND
or END
6618
STL, MC or MCR can be used only in main program, but it is
used elsewhere (e.g. in interrupt routine or subroutine).
6619
Invalid instruction is used in FOR-NEXT loop:
STL, RET, MC, MCR, I (interrupt pointer) or IRET.
Error
code
PLC
operation
at error
occurrence
Contents of error Action