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S
Screen
Form of presenting logically associated process data which can be displayed
collectively on the OP3 and modified individually.
Screen entry
Element of a screen; consists of an entry number, texts and variables.
Screen level
Editing level of the OP3 at which screens can be monitored and manipulated
Selection field
Field for for setting values of parameters (one of several defined values can
be chosen).
Soft keys
Keys that can be assigned with variable functions (depending on displayed
screen entry)
Startup test
Check on the status of the central processing unit and memories each time
the supply voltage is applied.
System message
Draws attention to internal conditions on the OP3 and the PLC.
Operator Panel OP3
Edition 11/99
Glossary
Glossary-3
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