23.5.3 Log in/Log off

Log in

If you set [Log in] in [Action] of the special switch, you can create a log-in switch for changing the current security level.

When you touch the log-in switch, the Security Password screen appears.

Screen Change

Relationship between Interrupt Request Level and Current Level

Condition after Interruption

Log in

Current level < Request level

New password screen is displayed

Cancel

Current level >= Request level

Screen is changed

Cancel

Window Display

Relationship between Interrupt Request Level and Current Level

Condition after Interruption

Log in

Current level < Request level

The password screen remains displayed. If password input is cancelled, the password window screen is displayed immediately.

Password input process continues

Current level >= Request level

The password screen remains displayed. The window is display in the background.

Password input process continues

Log off

If you set [Log off] in [Action] of the special switch, you can create a log-off switch for clearing the current security level.

Current Level

The current security level is stored in LS9301 (Security function status). However, you cannot change the values in LS9301 (Read-only).

When operating from GP-Viewer

As for operation from GP-Viewer, the log-in/log-off switch does not function regardless of Synchronous/Asynchronous Mode. If the log-in/log-off switch is pressed on the GP-Viewer side, an error message is displayed.