Mitsubishi Q2ACPU User Manual page 383

22. TROUBLE SHOOTING
Error
Error Contents and Cause
Code
[SFCP. FORMAT ERR.]
The numbers of BLOCK and BEND instructions in
an SFC program are not equal.
■Collateral informationmmon
4500
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
[SFCP. FORMAT ERR.]
The configuration of the STEP* to TRAN* to TSET
to SEND instructions in the SFC program is
incorrect.
■Collateral informationmmon
4501
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• STEPI* instruction does not exist in the block of
the SFC program.
■Collateral informationmmon
4502
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• The step specified in the TSET instruction does
not exist.
• In jump transition, the host step number was
specified as the destination step number.
4503
■Collateral informationmmon
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• The step specified in the TAND instruction does
not exist.
■Collateral informationmmon
4504
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
[SFCP. OPE. ERROR]
The SFC program contains data that cannot be
processed.
■Collateral informationmmon
4600
• 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
Write the program to the CPU module again using
the peripheral device.
• Write the program to the CPU module again
using GX Developer.
• Read the common information of the error using
GX Developer, and check and correct the error
step corresponding to that value (program error
location).
Write the program to the CPU module again using
GX Developer.
Read 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
Continue