Define Group Subscriber

Explanation

Use this activity to define a subscriber on an existing group in the IFS/OPC Client. The subscriber comprises of the interface, which can be used by external applications such as the OPC client to access the functions of a BizAPI in the extended server, and the operation which is the method name of the selected interface to invoke.

Prerequisites

• A group must be established on the IFS/OPC Client.
• Input parameters established on the targeted data item in IFS Applications.

System Effects

A group subscriber will be established which will later on be used to communicate to a specific business process in IFS/Applications.

Related Window Descriptions

N/A

Procedure

1. Click the File menu and click Open.
2. Browse for and select the configuration XML file you saved on adding a group.
3. Right click on the group you created and click Properties.
4. Click the Subscriber tab.
5. In the Operation field, use the List of Values to select a suitable operation from those in the Extended Server that you want to associate with the defined group. Note: The Interface field will be filled by default when an operation is selected.
6. Click the Subscriber tab and view the measurements in the Input Definition pane.
7. Edit the parameter references if necessary. To do so, double click the parameter in the Input Definition pane. This opens the Edit Record Attribute dialog box.
8. Select one or more of the following data sources and source list values depending on the type of input parameter definition required. Enter a value for the parameter reference, if enabled.

Data Source	Value from Source List	Value	Description
<Local Value>		Enter a constant value	Reference to a constant value
Server.Name		Read only	Server name from parent server
Server.Node		Read only	Server node from parent server
Server.Variables,	Select variable	Read only	Variable from parent server
Group.Name		Read only	Group name from current group
Group.Variables	Select variable	Read only	Variable from current group
Tag.Name	Select Tag	Read only	Name from selected child tag
Tag.Value	Select Tag	Read only	Last read OPC value from selected child tag
Tag.Timestamp	Select Tag	Read only	Time stamp when OPC value was last read from selected child tag
Tag.Quality	Select Tag	Read only	Quality from selected child tag
Tag.Status	Select Tag	Read only	Status from selected child tag
Tag.Variables	Select variable	Read only	* Variable from union of all child tags

Note: When a tag variable is selected to be referenced, the source list value represents the union of all the variables of child tags. It is recommended that all tags within a group have the same variables defined to avoid the resulting error when an event is triggered but the referenced variable was not defined on one of the tags.

9. Click OK.
10. Click the File Menu and click Save.