4. Menu Driven Software
4.1 Introduction
The panel has built in menu driven software that assists in panel configuration (set up),
maintenance functions and routine operation procedures and checks.
Once selected, menus are shown on the panel display. All menu displays follow the same
principles. The menu name is displayed and the menu items are shown with numbers alongside.
Menu items are selected by pressing the number key 0-9 that matches the item number.
Selecting a menu item may cause another menu to be called up or may carry out a particular
function. When a software function is carried out the operator may be prompted to enter, via
the keyboard, information relating to that function.
Any menu can be cancelled and the menu above it presented by pressing the ESC key. In
general the ESC key is used to cancel or abort the current activity and return to that preceding
it. The menu system can be exited completely by pressing the HOME key, which returns the
panel to its normal operation display.
Menu time-out feature
When the software menus are accessed it is possible that the operator may forget to exit from
the menu structure. In order that the panel is not left in this state there is a time-out mechanism
that will automatically return to the normal panel operating state after a fixed time within which
no keys have been pressed.
If the user is waiting to select a menu, then the time before exiting is approximately 45 seconds
with no keys pressed. If the user has started a particular software function then the time is
approximately 12 minutes.
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