Siemens A31003-51730-U103-7619 user manual Node, General structure, Description

The Elements of a DCO-Script

General structure

Right underneath the root, the Structure window is divided into

Node		Description
Constants		Use the node „Constants“ to create unchanging, constant ele-
		ments.
		These elements remain the same throughout the entire project
		and can be placed any number of times at any places you want
		in your project. Their values can be adjusted centrally in the
		OScAR-Pro Customized Operator.
Parameters		Use the node „Parameters“ to create parameterizable ele-
		ments. These elements can be used in the same way as Con-
		stants with the difference that their values can be adjusted
		easily through the Parameter editor of the OScAR-Pro-TT Op-
		erator-Tool.
Variables		Use the node „Variables“ to create global place holders that
		can be used for the exchange of information between Frames.
Lists		Use the node „Lists“ to create lists of place holders. These el-
		ements will help you to fill the Controls "Listbox" and "Combo-
		box" with data. You can either predefine the individual list en-
		tries in the DCO-Script (same as for Constants) or have them
		filled with data via various OScAR-Pro-TT Operator-Tool com-
		mands.
Frames		Use the node „Frames“ to create the Frames that are output on
		the screen and their Controls. During a project, the number of
		Frames that may be created and that the user may move be-
		tween is unrestricted.
Table 5-1	Description of the predefined nodes of the tree structure

Also, there are a number of different data types that are used in the DCO-Script and thus in the Structure window.

	07/2010
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