Glossary
Glossary-3
MP270 Equipment Manual
Release 01/99
Fixed window
The window which always appears at the top of the operating unit screen. The
content of the fixed window is independent of the screen currently open.
Flash memory
Programmable memory which can be electrically deleted and written to again
segment–by–segment.
Function key
Key on the operating unit to which a configurable function can be assigned.
Help text
Configurable, additional information on messages, screens and fields. The help
text concerning an alarm message can, for example, contain information on the
cause of the fault and methods of elimination.
Icon
Configured graphic symbol identifying the function of a function key.
Input field
Enables the user to enter values which are subsequently downloaded to the PLC.
Logout time
Configurable interval of time after which the password level is reset to zero when
the operating unit is not used.
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