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12.1 Error Code List
12.1.6 Error code list (4000 to 4999)
4631
[STEP EXE. ERROR]
• Startup was attempted at the step that does not
exist in the SFC program.
Or, the step that does not exist in the SFC
program was specified for end.
• Forced transition was executed based on the
transition condition that does not exit in the SFC
program.
Or, the transition condition for forced transition
that does not exit in the SFC program was
canceled.
■Collateral information
• Common Information:Program error location
• Individual Information:–
■Diagnostic Timing
• When instruction executed
• Read the common information of the error using
the peripheral device, and check and correct the
error step corresponding to that value (program
error location).
• Turn ON if the special relay SM321 is OFF.
RUN:
Off
ERR.:
Flicker
CPU Status:
Stop
Q00J/Q00/Q01
*2
Qn(H)
QnPH
QnPRH
QnU
4632
[STEP EXE. ERROR]
There were too many simultaneous active steps in
blocks that can be designated by the SFC program.
■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.
Qn(H)
QnPH
QnPRH
QnU
4633
[STEP EXE. ERROR]
There were too many simultaneous active steps in
all blocks that can be designated.
■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
*2 The function version is B or later.