Siemens PC 670 Betriebsanweisung Seite 19

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Product Description
3-5
ProTool/Pro Runtime User’s Guide
Release 12/99
DescriptionScreen object
Status button A Status button is a display and operating
element which has one of two states:
Touched
and
Untouched
. The states can be indicated by
means of text or graphics.
The Status button can be configured to be locking
(switch function) or non-locking (keying function).
Switch A switch serves to enter and display a binary
status. It can only be switched on or off.
Invisible button An invisible button is a transparent button that is
not displayed on the operating unit. If invisible
buttons are positioned, for example, on a graphic,
only parts of this graphic can be operated; a
motor or valve for example.
When an invisible button is pressed, the functions
configured for the event
Press
are triggered.
When the button is released, the functions
configured for the event
Release
are triggered.
Trend display A trend display provides a particularly clear
representation of process data when displayed as
a continual progression.
Several different trend curves can be displayed
simultaneously in the trend curve display, e.g.
current and archived trend curves.
Bar graph Bar graphs present a value from the PLC in the
form of a rectangular area. This makes it possible
to recognize from a single glance at the operating
unit how far away the current value is from the
limits or whether a specified setpoint has been
reached. Bar graphs are used, for example, to
display fill levels or quantities.
The direction, scaling, bar and background colors,
and labeling of the Y axis can be configured as
desired. Lines can also be displayed to mark limit
values.
Message view Special filter criteria for displaying the volatile
message buffer and/or the message archive are
configured in the message view.
Simple message view A simple message view can provide a subset of
the functionality of a message view. It can be
used, for example, to simply realize a message
line in a screen.
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