OPC-DA General

An OPC-DA Client connection communicates with an OPC Server and is the active part.

Values can be read and written, and the data structure can be determined by browsing.

It is recommended to connect to an OPC-DA Server on the same computer.

A tunnel connection is more stable via OPC-UA or OpcPipe, easier to configure and has security mechanisms.

In addition, the DCOM settings are complicated and different between the different operating systems.