What is OPC Scada?

Open Platform Communications (OPC) is a series of standards and specifications for industrial telecommunication. They are based on Object Linking and Embedding (OLE) for process control. An industrial automation task force developed the original standard in 1996 under the name OLE for Process Control.

Who developed OPC?

Automation vendors Fisher-Rosemount, Intellution, Opto 22 and Rockwell Software form a task force to develop a standard for data access based on COM and DCOM, and call it OPC, an abbreviation for OLE (Microsoft Object Linking & Embedding) for Process Control.

What is OPC DA vs UA?

OPC DA allows to access only the current data and is incapable to generate alarms, historical events whereas OPC UA supports features like historical events, multiple hierarchies and provides methods and programs (that are called commands).

What is OPC UA vs OPC DA?

OPC UA is the Unified Architecture of OPC. Specification doesn’t says anything about platform, OS etc. OPC DA, is older version of OPC specification. Where there was data modelling (not to a greater extent like OPC UA has).

Which is better PLC or SCADA?

While both fall under the category of “control systems”, SCADA provides greater capability than the PLC with the help of several components. Optimally, you would want to use the capabilities of both types of control systems in order to meet design expectations while becoming more cost-efficient (in the long run).

When was the OPC started?

The OPC, which derives its name from that of Oduduwa, the ancestor of the Yoruba race, was formed in August 1994 with the primary aim of defending, protecting and promoting Yoruba interests.

Is OPC UA an API?

OPC UA also defines an abstract programming model that can be implemented in different programming languages. This allows vendors developing APIs to leverage the common model while adding features that make the API more usable for the target users.