From OpenSCADAWiki
The Control Interface is included in the #TCntrNode object and it covers all nodes of the dynamic tree of the program, allowing uniform control of the program regardless of the client tool used. The Control Interface is made on the basis of the XML markup language and for which you can come up with many ways to use, for example, we note the following most indicative solutions:
- Web Interface of the configuration;
- GUI Interface of the configuration (Qt, WEB, ...);
- mirroring the objects configuration to the network for distributed management of a hierarchical network of OpenSCADA nodes from a common control environment;
- use as a protocol for accessing data of the objects from the network;
- providing other applications and individual components of OpenSCADA with service functions of access to internal data.