Mitsubishi Q2ACPU User Manual page 381

22. TROUBLE SHOOTING
Error
Error Contents and Cause
Code
[CAN'T EXECUTE(I)]
Though an interrupt input occurred, the
corresponding interrupt pointer does not exist.
■Collateral informationmmon
4220
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[CAN'T EXECUTE(I)]
An IRET instruction does not exist in the executed
interrupt program.
■Collateral informationmmon
4221
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[CAN'T EXECUTE(I)]
The IRET instruction exists before the FEND
instruction of the main routine program.
■Collateral informationmmon
4223
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[INST. FORMAT ERR.]
The number of CHK and CHKEND instructions is
not equal.
■Collateral informationmmon
4230
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[INST. FORMAT ERR.]
The number of IX and IXEND instructions is not
equal.
■Collateral informationmmon
4231
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[INST. FORMAT ERR.]
The configuration of the check conditions for the
CHK instruction is incorrect.
Alternatively, a CHK instruction has been used in a
low speed execution type program.
4235
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[EXTEND INST. ERR.]
The designation of a MELSECNET/MINI-S3 master
module control instruction was wrong.
■Collateral informationmmon
4300
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
*1 CPU operation can be set in the parameters at error occurrence. (LED indication varies.)
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.
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.
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LED Status Corresponding
CPU Status CPU
RUN:
Off
ERR.:
Flicker
CPU Status:
Stop
QnA
RUN:
Off/On
ERR.:
Flicker/On
CPU Status:
Stop/
*1
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