OPC UA Destination System

Definition

Destination system type that allows a method to be called on an OPC UA server. This server may be configured on a remote system or on an agent instance of your own PCo installation.

Use

You use an OPC UA destination system to be able to connect an OPC UA server.

You can use OPC UA destination systems in the following notification scenarios:

• Tag-based notification

  The OPC UA destination system is used here as a destination of a static or a versioned notification. PCo sends the changed tag values of the source system that is to be monitored using the notification messages to the OPC UA destination system. The OPC UA destination system calls the method defined previously in the OPC UA destination system to the remote server, and transfers the values. PCo can predefine fixed values for specific parameters of the method.

• Method notification

  The OPC UA destination system is used here as the destination for method notifications. The parameter values are forwarded from the method of the OPC UA server, which has been configured on an agent instance of a PCo system, via the method notification and the OPC UA destination system to the remote server. On the remote server, the method defined in the destination system is called and executed. In this scenario, the remote server can also send a response to PCo. For more information, see Method Notification.

The following tabs are available for configuring an OPC UA destination system:

• Session tab

  You specify here the OPC UA server that you want to connect by entering the name of a valid client configuration. You define a client configuration beforehand using the OPC UA source system. (See: Session Tab.)

• Security tab

  You cannot make any changes here. All the relevant settings are copied over automatically from the assigned client configuration, that is, from the assigned OPC UA source system. (See:OPC UA Source System: Security Tab.)

• Method tab

  The Method tab allows a selected OPC UA method, which is provided by the OPC UA server, to be configured. As soon as you have selected the method, the input and output parameters provided by the method are determined and displayed. (See: Method Tab.)

• Reliable Connection tab

  You use this tab to maintain the connection to the OPC UA server. PCo checks the connection regularly if a problem with the connection has been detected. (See: Reliable Connection Tab.)