System Lock; Detailed Description - Mitsubishi Electric E70 Series Instruction Manual

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7.4 System Lock

System lock is a function with which a machine tool builder can impose a time limit on CNC.Once theexpiry date is

passed, the user will be unable to activate a cycle start. If the user enters the decryption code issued by the machine tool

builder, he or she can set a new time limit or cancel the time limit.

Display of Time Limit

To check the time limit, open the [Diagn] screen and press [Self diagn].

Then the set expiry date appears as illustrated in the following figure.

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"

appears 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 cancelled 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

operation. Reset signal is unable to cancel this alarm. Instead, enter the decryption code issued by a machine tool

builder, and then turn OFF and ON the NC power.

If the expiry date is over during a cycle start operation, the operation will continue until Reset is input.

Refer to "1.3 Screen Configuration" in "I SCREEN OPERATIONS" for the display position of warning and alarm

E70 Series Instruction Manual

7.4 System Lock