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12.1 Error Code List
12.1.6 Error code list (4000 to 4999)
4505
[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
specified for the host step.
■Collateral information
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
•STOP RUN
Read the common information of the error using
GX Developer, and check and correct the error step
corresponding to that value (program error
location).
RUN:
Off
ERR.:
Flicker
CPU Status:
Stop
Q00J/Q00/Q01
*2
QnU
4506
[SFCP. FORMAT ERR.]
The structure of the SFC program is illegal.
• In a reset step, the host step number was
specified as the destination step.
■Collateral information
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
•STOP RUN
4600
[SFCP. OPE. ERROR]
The SFC program contains data that cannot be
processed.
■Collateral information
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
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.
RUN:
Off/On
ERR.:
Flicker/On
CPU Status:
Stop/
Continue
*1
Qn(H)
QnPH
QnPRH
4601
[SFCP. OPE. ERROR]
Exceeds device range that can be designated by
the SFC program.
■Collateral information
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
4602
[SFCP. OPE. ERROR]
The START instruction in an SFC program is
preceded by an END instruction.
■Collateral information
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
Error
Code
(SD0)
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.)
*2 The function version is B or later.