Mitsubishi Q2ACPU

22 - 36
22. TROUBLE SHOOTING
4220
[CAN'T EXECUTE(I)]
Though an interrupt input occurred, the
corresponding interrupt pointer does not exist.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
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.
RUN:
Off
ERR.:
Flicker
CPU Status:
Stop
QnA
4221
[CAN'T EXECUTE(I)]
An IRET instruction does not exist in the executed
interrupt program.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
4223
[CAN'T EXECUTE(I)]
The IRET instruction exists before the FEND
instruction of the main routine program.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
4230
[INST. FORMAT ERR.]
The number of CHK and CHKEND instructions is
not equal.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
4231
[INST. FORMAT ERR.]
The number of IX and IXEND instructions is not
equal.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
4235
[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.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
4300
[EXTEND INST. ERR.]
The designation of a MELSECNET/MINI-S3 master
module control instruction was wrong.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
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.
RUN:
Off/On
ERR.:
Flicker/On
CPU Status:
Stop/
Continue
*1
Error
Code
Error Contents and Cause Corrective Action
LED Status
CPU Status
Corresponding
CPU
*1 CPU operation can be set in the parameters at error occurrence. (LED indication varies.)