User`s manual

Error code list Troubleshooting
MELSEC System Q, Hardware 11 – 73
4109
OPERATION ERROR
With high speed interrupt setting PR, PRC,
UDCNT1, UDCNT2, PLSY or PWM instruction is
executed.
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
Delete the high-speed interrupt setting. When
using high-speed interrupt, delete the PR, PRC,
UDCNT1, UDCNT2, PLSY and PWM instructions.
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 04012 or
later)
4111
OPERATION ERROR
An attempt was made to perform write/read to/
from the CPU shared memory write/read
disabled area of the host station CPU module
with the instruction.
 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)
Q00/Q01
(Function
version is B or
later)
QnU
4112
OPERATION ERROR
A CPU module that cannot be specified with the
multiple CPU dedicated instruction was speci-
fied.
 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)
Q00/Q01
(Function
version is B or
later)
QnU (except
Q00UJCPU)
4113
OPERATION ERROR
– When the SP.DEVST instruction is executed,
the number of writing to the standard ROM of
the day exceeds the value specified by SD695.
– A value outside the specified range is set to
SD695.
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
– Check that the number of execution of the
SP.DEVST instruction is proper.
– Execute the SP.DEVST instruction again the
following day or later day. Or, arrange the
value of SD695.
– Correct the value of SD695 so that it does not
exceed the range.
OFF/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
QnU
4120
OPERATION ERROR
Since the manual system switching enable flag
(special register SM1592) is OFF, manual system
switching cannot be executed by the control
system switching instruction (SP. CONTSW).
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
To execute control system switching by the SP.
CONTSW instruction, turn ON the manual sys-
tem switching enable flag (special register
SM1592).
OFF/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
QnPRH
4121
OPERATION ERROR
– In the separate mode, the control system
switching instruction (SP. CONTSW) was exe-
cuted in the standby system CPU module.
– In the debug mode, the control system
switching instruction (SP. CONTSW) was exe-
cuted.
 Collateral information

Common Information: Program error location
 Individual Information: —
 Diagnostic Timing
When instruction executed
– Reexamine the interlock signal for the
SP.CONTSW instruction, and make sure that
the SP.CONTSW instruction is executed in the
control system only. (Since the SP. CONTSW
instruction cannot be executed in the standby
system, it is recommended to provide an
interlock using the operation mode signal or
like. Refer to the manual of the redundant sys-
tem).
– As the SP. CONTSW instruction cannot be
executed in the debug mode, reexamine the
interlock signal related to the operation mode.
OFF/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
QnPRH
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