Mitsubishi Electric GOT2000 Series User Manual page 184

■3. PLC status
(1) PLC failure
Check
□ Always occurs.
□ Occurs sometimes.
□ Operates normally.
10 - 6
10.1 GOT Restoration Sheets
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
-
Corrective action
Proceed to the following.
■ 4.
Proceed to GOT restoration
procedure.