Mitsubishi MELSEC Q Series User Manual

18
TROUBLESHOOTING
18.2 Troubleshooting
18.2.5 When UNIT VERIFY ERR. occurs
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17
STARTING MULTIPLE CPU SYSTEM
18
TROUBLESHOOTING
APPENDICESINDEX
18.2.5 When UNIT VERIFY ERR. occurs
The following flowchart shows procedure to be taken when an I/O module verification error
(error code: 2000, UNIT VERIFY ERR.) has occurred at the time of power-on or during
operation of the C Controller system.
Figure 18.4 When UNIT VERIFY ERR. has occurred
No
Yes
No
Yes
Yes
No
Yes
No
Yes
No
Yes
No
Check the error information on the
<<Module information>> or <<Event
history>> tab of the C Controller setting
utility.
Was the module on
the relevant slot removed and
remounted during
operation?
Has any error occurred?
Has any error occurred?
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.
Is the module
of the slot mounted
properly?
UNIT VERIFY ERR. occured
Are all the
extension cables of
the base unit connected
properly?
Has any error occurred?
Has the ERR.
LED turned off?
Has the ERR.
LED turned off?
Mount the module properly.
Connect the extension cable properly.
Replace the module.
Replace the C Controller module.
Replace the base unit.
Has the ERR.
LED turned off?
Replace the relevant module.
END
Yes
Yes
Yes
Reset the C Controller module.

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English