Mitsubishi Electric Q12DCCPU-V User Manual page 482

16
TROUBLESHOOTING
16
- 11 16.2 Troubleshooting
16.2.6 When CONTROL-BUS.ERR. occurred
CONTROL-BUS.ERR. occurred
Check the error information in
<<Module information>> or
<<Event history>> of C Controller
setting utility.
Reset the C Controller module and
RUN it again.
Was the error
removed?
No
Is the module in
the relevant slot mounted
properly? Is the extension cable of the
base unit connected
properly?
Yes
Are all the
extension cables of the base
unit connected properly?
Yes
Affected by noise?
No
Replace the module.
Has any error occurred?
Yes
Replace the C Controller module.
Has any error occurred?
Yes
Replace the base unit.
Has any error occurred?
Yes
It is a hardware fault of the module.
Please consult your local Mitsubishi service
center or representative, explaining the
details of the problem.
Figure 16.5 When CONTROL-BUS. ERR. occurred
Yes
Mount the module and connect
No
the extension cable properly.
No
Was the error
removed?
No
Connect the extension cables properly.
No
Was the error
removed?
Yes
Take measures against noise.
No
No
No
Yes
Yes
End