Allen-Bradley 2707-MVH232, Руководство пользователя, Страница: 41 / 92

Publication 2707-UM005B-EN-P
Running Applications 5-3
Function Keys
An application designer can link function keys [F1] and [F2] to
individual screens. Pressing an assigned function key displays the
function key number for approximately 0.5 seconds and then the
assigned screen. It is the responsibility of the application designer to
document the operations assigned to function keys. There are two
function key modes:
•
Auto Return
•
Continue
Auto Return
Auto return function keys return to the initial display after the linked
screen is executed. For example, assume that an application is
displaying screen #6 and an auto return function key [F1] is linked to a
recipe screen #10. When [F1] is pressed, the recipe screen #10 is
displayed. After the operator downloads a new recipe on screen #10,
the initial screen #6 is displayed.
The following table describes when the return to the initial screen
occurs.
Continue
Continue function keys do not return to the initial display but remain
at the linked screen. For example, assume that an application is
displaying screen #3 and a “continue” function key [F2] is linked to a
data entry screen #5. When [F2] is pressed, the data entry screen #5 is
displayed. The application continues from screen #5.
Function Key Linked To: Returns to Initial Screen After:
Data Display Screen
[ ], [PREV], or [NEXT] keys are pressed
Data Entry Screen
A value is entered or [PREV], or [NEXT] keys are pressed
(1)
(1)
[NEXT] or [PREV] keys abort the operation.
Recipe Screen
Recipe data is downloaded or [PREV], or [NEXT] keys are pressed
(1)