11-1
Operator Panel OP3
Edition 11/99
Process-Dependent Operator Guidance
Different actions are normally required or allowed in different operating
situations. To support changing requirements during process control, you can
configure the following measures, which provide the operator with help
depending on the situation and aims:
• screen-dependent soft keys and
• user-defined screen hierarchies.
11.1 Branching by Means of Soft Keys
You can configure function calls on the OP3 by means of soft keys. Soft keys
are special function keys to which different function calls are assigned for
different screen entries while you edit a screen. This makes it possible for the
operator to select functions as and when required by the situation. The keys
that can be assigned as soft keys on the OP3 are F1 to F5.
The functions that can be assigned to soft keys include:
• display message level,
• choose screen,
• display screen directory,
• display special screen,
• logout.
When the OP3 is connected to a PLC, a bit can be configured in a variable
for every soft key. This means that a bit is set in the PLC when a soft key is
pressed.
Soft keys and
screen hierarchies
Soft keys: function
keys with different
functions
11
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