OPC or OLE for Process Control is an industry standard for system inter-connectivity. OPC uses COM and DCOM technologies Microsoft to allow a data transfer application with one or more computers through the architecture of TCP / IP.
OPC defines a set of common interface, thus the application will retrieve the data with the same format, regardless of the data from the PLC, DCS, applications or other software. OPC is a communication solution that lives taken, installed and running.
OPC goal is to provide a standard infrastructure for data exchange control process. For example a company has a variety of data such as PLC, DCS, databases, RTU, etc. These data are available through a variety of connections, such as, serial, Ethernet or radio transmitter. While the process control applications can use a variety of operating systems such as UNIX, DOS or VMS.
OPC in this case serves to:
1. OPC standardizes process control data communication.
2. OPC standardizes the technology, not a product.
3. OPC provides true interoperability and scalability.
4. OPC can reduce implementation time and costs.
With OPC allows you to visualize, analyze, report through the application of any part with one or more OPC specifications.
By choosing the standard OPC technology, you activate the real interoperability, reduce implementation costs, and make full scalability system for the future.