OPC UA Client Points
About this task
Once you have attached a device to a server and you can create points to communicate back and forth for monitoring and control purposes.
Points need to be created/configured based on what is available on the OPC UA Server. CIMPLICITY OPC UA client enables you to select a Node ID from an OPC UA Address Space browser.
- OPC UA Client: New Point
- OPC UA Client: Point Device Properties
OPC UA Client: New Point
CIMPLICITY provides many ways to open a New Point dialog box.
Procedure
Results
Properties that were not available before are now available.
C | Scan Rate |
If the Update Criteria, corresponds to:
- A Polled subscription, Scan Rate entries can schedule how often the point will read values from the OPC UA Server.
- An Unsolicited subscription (recommended), the Scan Rate is ignored.
The Publishing Interval is used to control how often the OPC UA Server will report when a value has changed.
D | Buffer data for redundant failover |
To enable PTMRP to buffer the data from OPC DA and UA, select Buffer data for redundant failovercheck box in Point Device Properties. In case of a failover, the data changes are buffered to avoid any data loss during the switch over. When the secondary server starts working, the relevant Alarms and Events will be generated based on the buffered data. Set the value of REDUND_BUFFER_TIMESPAN property based on time required for the secondary server to switch over. For more information, refer REDUND_BUFFER_TIMESPAN in Global Parameters.