Setting An Operating Mode - Siemens Multi Panel MP270 SIMATIC HMI Equipment Manual

6.2

Setting an Operating Mode

Operating modes
It is possible to switch between the two operating modes " Online " and " Offline " on
the MP270.
Offline mode
There is no logical connection between the MP270 and PLC. The MP270 can be
operated, but processes cannot be operated or visualized.
Online mode
When using this mode, processes can be operated and visualized without
restriction. There is a logical connection between the MP270 and PLC or the
MP270 attempts to establish one.
Download mode
Information on switching the MP270 to operating mode " Download mode " is
provided on Page 3-3.
Conditions for changing operating modes
In order to be able to switch between " Online " and " Offline ", the function
Change_mode must be assigned to a selection field, for example, in the
configuration.
MP270 Equipment Manual
Release 01/99
System Settings
6-3