Mitsubishi Electric M80 Series Maintenance Manual page 118

M800/M80/E80 Series Maintenance Manual
4 Failure Diagnosis
Clearing the cumulated counter to zero
(Example) Clearing the cumulated count of the servo communication error
(1) Press the menu [Servo clear].
(2) Press the [Y] or [INPUT] key.
This also applies to menus [RIO clear], [Ether clear], [Battery clear], [Clear pw loss] and [Cl. ov.history].
Display of time limit warning and alarm
If the number of days remaining before expiration reaches 7 or less, the warning "Z64 Valid term soon to be expired" ap-
pears at the bottom right of the screen. This warning appears at every cycle start after power ON until the expiry date comes,
but can be canceled by Reset. Cycle start operation is enabled before the expiry date.
If the expiry date is passed, the alarm message "Z65 Valid term has been expired" appears, which disables cycle start op-
eration. Reset signal is unable to cancel this alarm. Instead, enter the decryption code issued by MTB, and then turn OFF
and ON the NC power.
If the expiry date is over during automatic operation, the operation will continue until reset signal is input. When operation
pause or block stop is performed during automatic operation with the state the expiry date is over, NC cannot restart.
For the display position of warning and alarm messages, refer to the "Instruction Manual".
While the warning is occurring, you can check the number of days remaining before the expiry date.
Open [Diagn] - [Alarm message] - [NC message] screen, then you can check the number of days. The number of remaining
days reaches 0 on the expiry date.
If you open the [Alarm] screen while the alarm is occurring, "Valid term has been expired" appears. If you attempt a cycle
start operation, the stop code "T01 Cycle st. prohibit (Term exp'd)" results, which disables cycle start operation.
An operation message appears.
The cumulated count of the servo communication error
1 and 2 will be cleared to "0".
When other keys are pressed, it will not clear to "0".
91 IB-1501273-F