4-1
TP27, TP37 Equipment Manual
Release 01/00
Screens
Processes (e.g. a processing machine or mixing station) are displayed on and
can be influenced by screens which appear on the Touch Panel. These screens
are created during configuration with ProTool for specific applications.
Logically related process values are acquired on screens and thus provide an
overview of a process or a system. Apart from this graphic mapping of pro-
cesses, screens provide an opportunity of entering new process values and thus
of controlling the process.
4.1 Screen Elements
Various screen elements are used to display and control screens:
S text
S graphics
S character graphics
S input fields for process values
S output fields for process values
S combined input/output fields
S bar graphs
S trends
S text or graphic lists
S buttons,
S light indicators.
The different screen elements are presented on the basis of the following exam-
ples.
Part of the contents of various tanks are filled and mixed in a mixing unit of a
fruit juice mixing system. The liquid levels in the tanks and in the mixer are
displayed. The intake valves can be opened and closed by means of operator
input on the Touch Panel. The motor for the mixer can be turned on and off in
a similar manner.
Process control
and monitoring
Screen sections
Example
4
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