Mitsubishi Electric GOT2000 Series User Manual page 312

(3) Check of the objects that are not displayed on the monitor screen
Check
□ Found
□ Not found
■3. PLC status
(1) PLC failure
Check
□ Always occurs.
□ Occurs sometimes.
□ Operates normally.
12 - 4
12.1 GOT Restoration Sheets
Symptom
• Details:
Example:
The numerical display object is not
displayed.
Symptom
CONTROL-BUS. ERROR, SP. UNIT LAY.
ERROR, or others is considered.
• Error code (system alarm):
Example:
1204 CPU H/W failure
The PLC CPU may be affected by noise or
the hardware may be faulty.
• Frequency:
Example: Once a month
• Error code (system alarm):
Example:
1204 CPU H/W failure
Cause/status
Proceed to ■3. PLC status.
Cause/status
Proceed to the following.
Proceed to ■4. GOT restoration procedure.
-
Corrective action
Corrective action