Determined by “Meta” elements with Property=“opc:FunctionGroupName” describing Data Objects the Variables and Properties may be organized as components of 2:FunctionalGroupType folder Objects. If the “Meta” elements with this attribute are missing, the Variables and Properties shall be organized as components at root level of the GsdGenSubmoduleApplicationType Object.

Figure 24 shows the usage of 2:FunctionalGroupType Objects as folders organizing the Data Objects.

Figure 24 – Usage of 2:FunctionalGroupType folder Objects

The “FunctionGroupName” property may define a hierarchical folder structure using file system path syntax: “RootFolder/SubFolder/…/Folder”. The vendor shall provide path syntax strings yielding a consistent tree structure, as shown in Figure 24. See sample XML in Annex E.1 also.