Mitsubishi Electric QJ71LP21 Reference Manual page 283

8 TROUBLESHOOTING
Error Code
Error Contents and Cause
*1
(SD0)
No NEXT instruction was executed following the
execution of a FOR instruction.
4200
Alternatively, there are fewer NEXT instructions than FOR
instructions.
A NEXT instruction was executed although no FOR
instruction has been executed.
4201
Alternatively, there are more NEXT instructions than FOR
instructions.
4202 More than 16 nesting levels are programmed.
A BREAK instruction was executed although no FOR
4203
instruction has been executed prior to that.
The CALL instruction is executed, but there is no
4210
subroutine at the specified pointer.
There was no RET instruction in the executed subroutine
4211
program.
The RET instruction was before the FEND instruction in
4212
the main program.
4213 More than 16 nesting levels are programmed.
Though an interrupt input occurred, the corresponding
4220
interrupt pointer does not exist.
An IRET instruction does not exist in the executed
4221
interrupt program.
An IRET instruction exists before the FEND instruction of
4223
the main program.
The number of CHK and CHKEND instructions is not
4230
equal.
4231 The number of IX and IXEND instructions is not equal.
The configuration of the check conditions for the CHK
instruction is incorrect.
4235
Alternatively, a CHK instruction has been used in a low
speed execution type program.
The designation of a MELSECNET/MINI-S3 master
4300
module control instruction was wrong.
The designation of an AD57/AD58 control instruction was
4301
wrong.
*1 : Characters in parentheses ( ) indicate the special register numbers where individual information is being stored.
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Corrective Action
Read the common information of the error using the
peripheral device, check error step corresponding to its
numerical value (program error location), and correct the
problem.
Keep nesting levels at 16 or under.
Read the common information of the error using the
peripheral device, check error step corresponding to its
numerical value (program error location), and correct the
problem.
Keep nesting levels at 16 or under.
Read the common information of the error using the
peripheral device, check error step corresponding to its
numerical value (program error location), and correct the
problem.
Read the common information of the error using the
peripheral device, check error step corresponding to its
numerical value (program error location), and correct the
problem.
MELSEC-Q
Corresponding CPU
QnA
Qn(H)
QnPH
QnA
Qn(H)
QnPH
QnA
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