OPC is a common, high performance communication interface based on DCOM and Web Services technology that enables automation/control applications running on your PC to communicate with control equipment. In short, the OPC specification defines a set of interfaces for easy-to-use objects, and includes the functions and properties to enable the manipulation of these objects.

The basic transport layer for OPC is DCOM (Distributed Component Object Model). Because it is distributed, a human-machine interface (HMI) or supervisory control and data acquisition (SCADA) software package like VTS can process and collect data from OPC Servers that are running on different computers on a network.

VTS provides both an OPC Client driver and an OPC Server as included tag types. Access to the server tag depends on whether your VTS license key includes this technology.  Please see your Trihedral account representative for details.

You are able to monitor OPC communications using the Trace Viewer.  Note that enabling tracing will slow communication.