Mitsubishi Melsec-Q Series User Manual page 419

Error
Code Error Contents and Cause
(SD0)
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• In the operation output of a step, the SET Sn/
BLmSn or RST Sn/BLmSn instruction was speci-
fied for the host step.
4505
■Collateral information
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• In a reset step, the host step number was speci-
fied as the destination step.
■Collateral information
4506
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• STOP RUN
[SFCP. OPE. ERROR]
The SFC program contains data that cannot be pro-
cessed.
■Collateral information
4600
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[SFCP. OPE. ERROR]
Exceeds device range that can be designated by
the SFC program.
■Collateral information
4601
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
[SFCP. OPE. ERROR]
The START instruction in an SFC program is pre-
ceded by an END instruction.
■Collateral information
4602
• 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.)
*2 The function version is B or later.
Corrective Action
Read the common information of the error using
GX Developer, and check and correct the error step
corresponding to that value (program error loca-
tion).
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.
CHAPTER12 TROUBLESHOOTING
LED Status Corresponding
CPU Status CPU
RUN:
Off
ERR.:
Q00J/Q00/Q01
Flicker
QnU
CPU Status:
Stop
RUN:
Off/On
ERR.:
Qn(H)
Flicker/On
QnPH
QnPRH
CPU Status:
Stop/
*1
Continue
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*2
12