dl-breadcrumbs__homedl-breadcrumb-item__separatorConfiguration and programmingdl-breadcrumb-item__separatorProgramming with CODESYSdl-breadcrumb-item__separator...dl-breadcrumb-item__separatorCODESYS Development Systemdl-breadcrumb-item__separatorReference, Programmingdl-breadcrumb-item__separatorData Typesdl-breadcrumb-item__separatorData type 'UNION'
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Data type 'UNION'dl-permalink__symbolPermalink

A UNION is a data structure that usually contains different data types.

In a union, all components have the same offset and therefore the same amount of memory. In the following declaration example of a union, an assignment to ‎name.a‎ will also affect ‎name.b‎.

Example

TYPE name:
UNION
	a : LREAL;
	b : LINT;
END_UNION
END_TYPE