Mitsubishi MELSEC Q Series User Manual

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18.2 Troubleshooting
18.2.6 When CONTROL-BUS.ERR. occurs
18
TROUBLESHOOTING
18.2.6 When CONTROL-BUS.ERR. occurs
The following flowchart shows procedures to be taken when a control bus error (error
code: 1412 to 1416, CONTROL-BUS. ERR.) has occurred at the time of power-on or
during operation of the C Controller system.
Note that this flowchart applies only when the relevant slot or base unit can be identified by
the error code
.
Figure 18.5 When CONTROL-BUS. ERR. has occurred
No
Yes
No
Yes
No
No
Yes
Confirm the error information on the
<<Module information>> or <<Event
history>> tab of the C Controller
setting utility.
Reset the C Controller module and
RUN it again.
Yes
Yes
Yes
No
CONTROL-BUS.ERR. occured
Is the ERR. LED
turned off?
Is the module in
the relevant slot mounted
properly? Is the extension cable of the
base unit connected
properly?
Are all the
extension cables of the base
unit connected properly?
Is There noise?
Take measures against noise.
Mount the module and connect
the extension cable properly.
Is the ERR. LED
turned off?
Connect the extension cable properly.
Has the ERR. LED
turned off?
END
No
No
No
It is a hardware fault of the module.
Please consult your local Mitsubishi service
center or representative, explaining the
details of the problem.
Has any error occurred?
Has any error occurred?
Has any error occurred?
Replace the module.
Replace the C Controller module.
Replace the base unit.
Yes
Yes
Yes

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English