User`s manual

Error code list Troubleshooting
MELSEC System Q, Hardware 11 – 93
11.3.7 Error code list (7000 to 10000)
Error
code
Error contents and cause Corrective action
LED status
CPU
status
Corre-
sponding
CPU
RUN ERR.
7000
MULT CPU DOWN
In the operating mode of a multiple CPU sys-
tem, a CPU error occurred at the CPU where
"All station stop by stop error of CPU " was
selected.
In a multiple CPU system, a CPU module
incompatible with the multiple CPU system
was mounted.
CPU modules other than CPU No.1 were
removed from the base unit in operation, or
reset.
Collateral information
Common Information: Module No. (CPU No.)
Individual Information: —
Diagnostic Timing
Always
Read the individual information of the error
using GX (IEC) Developer, identify the error of
the CPU module, and remove the error.
Remove the CPU module incompatible with
the multiple CPU system from the main base
unit.
Check the mounting status of CPU modules
other than CPU No.1 and whether the CPU
modules were reset.
OFF Flicker Stop Q00/Q01
(Function
version is B or
later)
Qn(H)
(Function
version is B or
later)
QnPH
QnU (except
Q00UJCPU)
MULT CPU DOWN
In a multiple CPU system, CPU other than CPU
No.1 cannot be started up due to stop error of
the CPU No.1 at power-on, which occurs to CPU
No.2 to No.4.
Collateral information
Common Information: Module No. (CPU No.)
Individual Information: —
Diagnostic Timing
At power ON/At reset
Read the individual information of the error
using GX (IEC) Developer, identify the error of
the CPU module, and remove the error.
7002
MULT CPU DOWN
There is no response from the target CPU
module in a multiple CPU system during ini-
tial communication.
In a multiple CPU system, a CPU module
incompatible with the multiple CPU system
was mounted.
Collateral information
Common Information: Module No. (CPU No.)
Individual Information: —
Diagnostic Timing
At power ON/ At reset
Reset the CPU module and RUN it again. If the
same error is displayed again, this suggests
the hardware fault of any of the CPU modules.
Contact your local Mitsubishi representative.)
Remove the CPU module incompatible with
the multiple CPU system from the main base
unit.
Or, replace the CPU module incompatible with
the multiple CPU system with the compatible
one.
OFF Flicker Stop Q00/Q01
(Function
version is B or
later)
Qn(H)
(Function
version is B or
later)
QnPH
MULT CPU DOWN
There is no response from the target CPU mod-
ule in a multiple CPU system during initial com-
munication.
Collateral information
Common Information: Module No. (CPU No.)
Individual Information: —
Diagnostic Timing
At power ON/ At reset
Reset the CPU module and RUN it again. If the
same error is displayed again, this suggests the
hardware fault of any of the CPU modules.
Contact your local Mitsubishi representative.
QnU (except
Q00UJCPU)
7003
MULT CPU DOWN
There is no response from the target CPU
module in a multiple CPU system at initial com-
munication stage.
Collateral information
Common Information: Module No. (CPU No.)
Individual Information: —
Diagnostic Timing
At power ON/ At reset
Reset the CPU module and RUN it again. If the
same error is displayed again, this suggests the
hardware fault of any of the CPU modules.
Contact your local Mitsubishi representative.
OFF Flicker Stop Q00/Q01
(Function
version is B or
later)
Qn(H)
(Function
version is B or
later)
QnPH
7004
MULT CPU DOWN
In a multiple CPU system, a data error occurred
in communication between the CPU modules.
Collateral information
Common Information: Module No. (CPU No.)
Individual Information: —
Diagnostic Timing
Always
Check the system configuration to see if mod-
ules are mounted in excess of the number of
I/O points.
When there are no problems in the system
configuration, this indicates the CPU module
hardware is faulty.
Contact your local Mitsubishi representative.
OFF Flicker Stop Q00/Q01
(Function
version is B or
later)
Qn(H)
(Function
version is B or
later)
Tab. 11-9: Error code list (7000 to 10000) for PLC CPUs of MELSEC System Q