Information Model and Mapping Properties

Depending on the element selected in the “Information Model” area, additional information is displayed in this area based on the context.

“Namespaces” Tab

This tab shows the namespace on which the information model is based.

“Attributes” Tab

This tab shows attributes and values of the selected element.

“References” Tab

This tab shows the reference types used with node class, name, modelling rule and data type for the selected element (see also Add References).
If the reference can be deleted (this applies, for example, to references that you have created yourself), a trash can icon is displayed to delete the entry (see Delete References).

“Mapping” Tab

This tab is only displayed if an element of the information model is selected for which mapping with application variables is possible.

When selecting a variable, the “Mapping” tab shows the following settings:

“Mapping” tab (when selecting a variable)

Display and selection of the mapping type
Mapping Type	Description
No mapping	“No Mapping” is displayed if the variable selected in the information model is not (yet) mapped to an application variable. Note: If a mapping already exists and you switch to this option and click [Confirm], the existing mapping is deleted and the entry in the “Mapping” area is removed.
Mapping to application variables	“Mapping to application variables” is displayed if the variable selected in the information model is mapped to an application variable (see Map Application Variables to Information Module Variables/Objects). In this case, the data type and symbol path of the linked application variable are displayed. Note: If there is no mapping before and this option is selected, the symbol path can also be entered manually at this point (see Map Application Variables to an OPC UA Variable Manually). Click [Confirm] to check the validity of the symbol path.
Mapping to a static value	A static value is assigned to the variable (see Assign Static Values to Variables). Note: Note that the value entered must match the data type used. The values are not checked for validity. Please note the OPC UA attribute reference under https://reference.opcfoundation.org.

When selecting an object, the “Mapping” tab shows the following settings:

“Mapping” tab (when selecting an object)

Settings for Regular Expressions
Parameters	Description
DataSourceIdentifier	The symbol paths of all available application variables are filtered using this regular expression.
NodeId/ NodeIdTarget	For each symbol path already filtered using the “DataSourceIdentifier”, a NodeId string is generated using the “NodeId” and “NodeIdTarget” properties. Note: Note that this NodeId string must be unique according to the OPC UA specification. The “NodeId” property specifies a regular expression that is applied to the symbol paths that have already been filtered. The “NodeIdTarget” property compiles the final NodeId value of the OPC UA variable from the components of the regular expression of the “NodeId”.
BrowseName/ BrowseNameTarget	Similar to the “NodeId” property, the OPC UA BrowseName is generated from the already filtered symbol path using these properties.
DisplayName/ DisplayNameTarget	Similar to the “NodeId” property, the OPC UA DisplayName is generated from the already filtered symbol path using these properties.

The description for using regular expressions is available at Use Regular Expressions to Filter Application Variables.