User`s manual

Troubleshooting Error code list
11 – 82
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 pro-
gram was specified for end.
– Forced transition was executed based on the
transition condition that does not exist in the
SFC program.
Or, the transition condition for forced transi-
tion that does not exist in the SFC program
was cancelled.
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
– Read the common information of the error
using GX (IEC) Developer, check error step
corresponding to its numerical value (pro-
gram error location), and correct the problem.
– Turn ON if the special relay SM321 is OFF.
OFF Flicker Stop Q00J/Q00/Q01
(Function
version is B or
later)
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 pro-
gram.
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
Read the common information of the error using
GX (IEC) Developer, check error step corre-
sponding to its numerical value (program error
location), and correct the problem.
OFF Flicker Stop 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
Read the common information of the error using
GX (IEC) Developer, check error step corre-
sponding to its numerical value (program error
location), and correct the problem.
OFF Flicker Stop Qn(H)
QnPH
QnPRH
QnU
Error
code
Error contents and cause Corrective action
LED status
CPU
status
Corre-
sponding
CPU
RUN ERR.
Tab. 11-6: Error code list (4000 to 4999) for PLC CPUs of MELSEC System Q