Mitsubishi Melsec-Q Series User Manual page 413

Error
Code Error Contents and Cause
(SD0)
[FOR NEXT ERROR]
A NEXT instruction was executed although no FOR
instruction has been executed.
Alternatively, there are more NEXT instructions
than FOR instructions.
4201
■Collateral information
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[FOR NEXT ERROR]
More than 16 nesting levels are programmed.
■Collateral information
• Common Information:Program error location
4202
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[FOR NEXT ERROR]
A BREAK instruction was executed although no
FOR instruction has been executed prior to that.
■Collateral information
4203
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[CAN'T EXECUTE(P)]
The CALL instruction is executed, but there is no
subroutine at the specified pointer.
■Collateral information
4210
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[CAN'T EXECUTE(P)]
There was no RET instruction in the executed sub-
routine program.
■Collateral information
4211
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[CAN'T EXECUTE(P)]
The RET instruction exists before the FEND
instruction of the main routine program.
■Collateral information
4212
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[CAN'T EXECUTE(P)]
More than 16 nesting levels are programmed.
■Collateral information
• Common Information:Program error location
4213
• Individual Information:–
■Diagnostic Timing
• When instruction executed
Corrective Action
Read the common information of the error using
the peripheral device, check error step correspond-
ing 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 correspond-
ing 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 correspond-
ing to its numerical value (program error location),
and correct the problem.
Keep nesting levels at 16 or under.
CHAPTER12 TROUBLESHOOTING
LED Status Corresponding
CPU Status CPU
RUN:
Off
ERR.:
Flicker QCPU
CPU Status:
Stop
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