User`s manual

Troubleshooting Error code list
11 – 74
4122
OPERATION ERROR
– The dedicated instruction was executed to the
module mounted on the extension base unit
in the redundant system.
– The instruction for accessing the intelligent
function module mounted on the extension
base unit from the standby system at separate
mode was executed.
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
– Delete the dedicated instruction for the mod-
ule mounted on the extension base unit.
– Delete the instruction for accessing the intelli-
gent function module mounted on the exten-
sion base unit from the standby system.
OFF/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
QnPRH (first 5
digits of serial
No. is 09012 or
later)
4130
OPERATION ERROR
Instructions to read SFC step comment
(S(P).SFCSCOMR) and SFC transition condition
comment (S(P).SFCTCOMR) are executed for
the comment file in ATA card.
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
Target comment file has to be other than the
comment file in ATA card.
OFF/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
Qn(H) (first 5
digits of serial
No. is 07012 or
later)
QnPH (first 5
digits of serial
No. is 07032 or
later)
QnPRH
4131
OPERATION ERROR
The SFC program is started up by an instruction
while another SFC program has not yet been
completed.
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
– Check the SFC program specified by the
instruction.
– Or, check the executing status of the SFC pro-
gram.
OFF/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
QnU
4140
OPERATION ERROR
Operation with non-allowed input data ("-0",
unnormalized number, nonnumeric, 앧앝) is per-
formed.
 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/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
QnU
4141
OPERATION ERROR
Overflow occurs at operation.
 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/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
QnU
4200
FOR NEXT ERROR
No NEXT instruction was executed following the
execution of a FOR instruction.
Alternatively, there are fewer NEXT instructions
than FOR instructions.
 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 )
4201
FOR NEXT ERROR
A NEXT instruction was executed although no
FOR instruction has been executed.
Alternatively, there are more NEXT instructions
than FOR instructions.
 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 )
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