The planning and implementation of a DCO Project

The case study project

Global objects

The below-listed global objects are created for the internal storage of the data and to commu- nicate with OScAR-Pro:

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To render the different possibilities of proceeding, the data of

–the announcement "1000:Fire alert" is entered directly in form of values,

–the announcement "1001:Deflagration" is created in form of a Constant, and

–the announcements "1002:Leakage" and "1003:Short circuit" are created in form of parameters.

The entire broadcast data is entered exclusively in form of parameters.

In order to select the announcements administrated in OScAR-Pro via the Frames child node "Announcement selection", an index is created with a corresponding Data list and a matching Filter.

Variables are created to store the currently selected announcement as well as its name and the currently selected broadcast.

Except for the Button that is used to invoke the broadcast, a Variable is created for each Button on the Main Page to retain the information if the respective Button shall blink or not.

The Functions of the "Main page"

The following Functions are implemented on the Main Page:

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For each blinking Button, a Function is created that switches the blinking to ON or OFF in keeping with the Button's matching Variable.

One Function to switch OFF the blinking of Event Buttons.

Three Functions to control the status (enabled/blocked) of the "Invoke" Button. The ob- jective here is to ensure that this Button is not enabled unless one event and at least one area have been selected.

One Function that is invoked whenever the Main page is loaded and that switches the blinking of the Buttons to ON or OFF in keeping with their corresponding Variables. Please note that while the system supports the simultaneous blinking of several Area Buttons, can it only support the blinking of one Event Button at a time.

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The Area and Event Buttons receive the below Functions. They are automatically in- voked whenever these Buttons are pressed:

–One Function in case the Button is not yet blinking.

–One Function in case the Button is already blinking.

The Event Button "More" is assigned a Function to jump to "Announcement selection".

 

07/2010

6-8

OScAR-Pro Customized Operator, User Manual

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Siemens A31003-51730-U103-7619 user manual Global objects, Functions of the Main
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