Mitsubishi Electric MELSEC FX3U Programming Manual page 945

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Error PLC operation at
code error occurrence
Circuit error [M8066(D8066)]
⎯
0000
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
Stops
operation
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
Contents of 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).
Invalid instruction is used in FOR-NEXT loop:
STL, RET, MC, MCR, I (interrupt pointer) or IRET.
FOR-NEXT instruction nesting level exceeded
Numbers of FOR and NEXT instructions do not
match.
No NEXT instruction
No MC instruction
No MCR instruction
STL instruction is continuously used 9 times or
more.
Invalid instruction is programmed within STL-RET
loop:
MC, MCR, I (interrupt pointer), SRET or IRET.
No STL instruction
Invalid instruction is used in main program:
I (interrupt pointer), SRET or IRET
No P or I (interrupt pointer)
No SRET or IRET instruction
STL-RET / MC-MCR instructions programmed in
the subroutine.
SRET programmed in invalid location
FEND programmed in invalid location
38 Error Check Method and Error Code List
38.4 Error Code List and Action
Action
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.
31
32
33
34
35
36
37
38
A
B
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