Flowchart For When Unit Verify Err. Occurs - Mitsubishi Q01CPU User Manual

12
TROUBLESHOOTING

12.2.19 Flowchart for when UNIT VERIFY ERR. occurs

The following shows the flowchart for when UNIT VERIFY ERR. occurs at programmable
controller power-on or during operation.
The UNIT VERIFY ERR. has occured.
Check the slot where error occurred
with the GX Developer.
Has
the module on
the corresponding slot been
removed/mounted during
operation?
NO
Is the module
of the applicable slot
mounted properly?
YES
Are all the
extension cables of
the base unit connected
properly?
YES
Replace the
corresponding module.
Error detection
Replace the CPU
module.
Error detection
Replace the
applicable base unit.
Error detection
Hardware fault
Please consult your local Mitsubishi
Please consult your local nearest
service center or representative, Mitsubishi or representative,
explaining a detailed description of explaining a detailed description of
the problem. the problem.
12
- 24 12.2 Troubleshooting
12.2.19 Flowchart for when UNIT VERIFY ERR. occurs
YES
NO
Mounted the module properly.
NO
Has the "ERR."
LED turned off?
NO
Connect the extension cable properly.
NO
Has the "ERR."
LED turned off?
Normal operation
Normal operation
Normal operation
Diagram 12.16 Flowchart for when UNIT VERIFY ERR. occurs
Reset the CPU module.
Has the "ERR."
LED turned off?
Replace the corresponding module.
YES
YES
Completed
YES
NO