Mitsubishi Q2ACPU

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22. TROUBLE SHOOTING
4301
[EXTEND INST. ERR.]
The designation of an AD57/AD58 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
QnA
4400
[SFCP. CODE ERROR]
No SFCP or SFCPEND instruction in SFC
program.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
Write the program to the CPU module again using
GX Developer.
4410
[CAN'T SET(BL)]
The block number designated by the SFC program
exceeds the range.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
4411
[CAN'T SET(BL)]
Block number designations overlap in SFC
program.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
4420
[CAN'T SET(S)]
A step number designated in an SFC program
exceeds the range.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
4421
[CAN'T SET(S)]
Total number of steps in all SFC programs exceed
the maximum.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
4422
[CAN'T SET(S)]
Step number designations overlap in SFC program.
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
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.)