Mitsubishi MELSEC-Q Series User Manual page 725

18
TROUBLESHOOTING
Error code
• In the operating mode of a multiple CPU system, 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.
7000
• When CPU No.1 is the Basic model QCPU, a "CPU (Empty)" slot is
set on the right-hand side of the C Controller module.
In a multiple CPU system, by a stop error of CPU No. 1 during power-
on, the other CPUs cannot start. (This error occurred at CPU No. 2 to
4)
• There is no response from the target CPU module in a multiple CPU
system during initial communication.
7002
• In a multiple CPU system, a CPU module incompatible with the
multiple CPU system was mounted.
• In a multiple CPU system, a faulty CPU module was mounted.
• In a multiple CPU system, a CPU module incompatible with the
multiple CPU system was mounted.
(The CPU module compatible with the multiple CPU system was
7010
used to detect an error.)
• In a multiple CPU system, any of the CPU No. 2 to 4 was reset with
power ON. (The CPU whose reset state was concelled was used to
detect an error.)
In a multiple CPU system, an error occurred in the CPU "where
system stop was not selected" in the operation mode.
7020
(The CPU module where no error occurred was used to detect an
error.)
Error description and cause Corrective action
• Check the error of the faulty CPU module and eliminate the error
cause.
• Remove the CPU module incompatible with the multiple CPU
system from the main base unit.
• Change the setting.
Check the error of the faulty CPU module and eliminate the error
cause.
• Reset the CPU module and RUN it again. If the same error is
displayed again, any of the CPU modules is faulty. Please consult
your local Mitsubishi service center or representative, explaining the
details of the problem.
• Remove the CPU module incompatible with the multiple CPU
system from the main base unit. Or replace the CPU module with a
CPU module compatible with the multiple CPU system.
• Replace the faulty CPU.
• Replace the CPU module with the one compatible with the multiple
CPU system.
• Do not reset any of CPU modules No.2 to 4.
• Reset CPU No. 1 and restart the multiple CPU system.
Check the error of the faulty CPU module and eliminate the error
cause.
18.3 Actions for Lit/Flashing ERR. LED
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