Dell TL2000 manual User Interfaces, Operator Control Panel Philosophy

Chapter 2. User Interfaces

This library has two user interfaces.

vOperator Control Panel - located on the front panel of the library

vWeb User Interface - accessed via a web browser

Operator Control Panel

The Operator Control Panel operates in two basic modes.

vUser Interaction mode - This mode is employed when a user is pushing buttons on the Operator Control Panel.

vSystem Driven mode - This is the normal mode of operation. In this mode, the Operator Control Panel displays status associated with the actions that were caused from commands issued via the drive’s internal (drive to library) serial interface.

When an Operator Control Panel button is pressed and released, the Operator Control Panel automatically transitions to User Interaction mode. User Interaction mode will continue until 3 minutes after a user stops pushing buttons, or the requested accessor action stops - whichever is longer. At which time, the Operator Control Panel will return to System Driven mode.

If necessary, the Operator Control Panel will automatically transition to the System Driven mode. When this occurs, the library must remember what the user was doing before the display mode changed. Therefore the next button pressed will only transition the Operator Control Panel to the User Interaction mode from the System Driven mode.

In case of the activated user security feature, the User Interaction mode is restricted to Login and Monitor menu items, until a user logs in with a correct password.

Operator Control Panel Philosophy

Operator Control Panel operation must obey some basic rules. These rules of operation constitute a philosophy.

vAny operational conflict between commands received over the host interface or the Web User Interface and those entered via the Operator Control Panel will be avoided with a reservation mechanism on a first-come, first-served basis. Any reservation by the Operator Control Panel is canceled by an Operator Control Panel logout or a timeout, which cancels the User Interaction Mode.

vLibrary firmware will not allow a user to select an impossible request. Those situations will include, but are not limited to:

–Moving a cartridge from any source to a full slot

–Moving a cartridge from an empty slot

–Loading a cartridge from any source to a full drive

–Unloading a cartridge from an empty drive

vAny error detected by the library or drive controller and not recoverable through predetermined firmware algorithms will be considered as fatal. An error code will be displayed on the Operator Control Panel display and the error LED will

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