system.opchda
OPC HDA Functions
The following functions give you access to interact with the HDA types of OPC servers.
For more information on OPC HDA, see the OPC HDA properties section of the Tag History Providers page.
If you are looking for an OPC HDA server to use, various OPC HDA server tools are available, such as Matrikon and Kepware.
📄️ browse
Performs a browse at the given root.
📄️ getAggregates
Will query the server for aggregates that it supports.
📄️ getAttributes
Queries the given server for the item attributes that are available with system.opchda.readAttributes.
📄️ getServers
Returns a list of the OPC-HDA servers configured on the system.
📄️ insert
Insert values on the OPC-HDA server.
📄️ insertReplace
Will insert values on the OPC-HDA server, or replace them if they already exist.
📄️ isServerAvailable
Checks to see if the specified OPC-HDA server is defined, enabled, and connected.
📄️ readAttributes
Reads the specified attributes for the given item over a time range.
📄️ readProcessed
Reads processed values from the OPC-HDA server.
📄️ readRaw
Reads raw values from the OPC-HDA server.
📄️ replace
Replaces values on the OPC-HDA server if the given item ID exists.