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SIMATIC PCS 7 process control system

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OS software<br />

Trends<br />

Trends can be displayed as a full-size picture or as a window in<br />

the working area. Some trends/trend groups are predefined<br />

during plant configuration. Further ones can be individually<br />

configured in online mode, selected using the <strong>process</strong> tag<br />

names, and saved for reuse.<br />

OS <strong>process</strong> <strong>control</strong> with freely-positionable windows<br />

User interface<br />

The predefined user interface of the operator <strong>system</strong> has all<br />

the features typical of a <strong>control</strong> <strong>system</strong>: it is multilingual,<br />

clearly structured, ergonomic and easy to understand. The operator<br />

can survey the <strong>process</strong> extremely easily, and rapidly<br />

navigate between different views of the plant. He is supported<br />

by a picture tree manager which organizes the picture hierarchy<br />

according to user requirements and permits scrolling in<br />

this hierarchy and direct selection of subordinate areas.<br />

Process displays and <strong>process</strong> tags can also be simply called up<br />

by name. An online language selector permits the user to<br />

change the display language during runtime.<br />

A standard view and a server view are available for the technological<br />

representation of a plant, each with variously designed<br />

area overviews. Features provided in both views include:<br />

■ Message line for the last received message with configurable<br />

display sequence (maximum message class or<br />

highest priority)<br />

■ Date, time and name of the operator<br />

■ Area overview with up to 36/49/64 areas<br />

■ Working area for plant displays and movable windows for<br />

faceplates, historic trends, etc.<br />

■ System function keys<br />

In a special message view it is possible to view the incoming<br />

messages and to switch between new list, old list, cleared<br />

alarm list, operator action list, <strong>control</strong> element list and message<br />

history list.<br />

The display tools available permit the operator to create individual<br />

displays, to save them, and to recall them later.<br />

Trend window on the operator station<br />

22 Operator <strong>system</strong>

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