Sometimes called a universal protocol gateway, this class of product is designed as a computer appliance, and is used to connect data from one automation system to another.
This is often a requirement to optimize the performance of a production line, by effectively communicating machine states upstream and downstream of a piece of equipment.
When real-time interfaces are involved, a universal gateway, with its ability to support many protocols simultaneously becomes the best choice.
Typical protocols; Rockwell Automation CIP, Ethernet/IP, Siemens Industrial Ethernet, Modbus TCP.
The Smart Grid is now prompting a new class of application where plant floor equipment is tied to electric utilities for the purpose of Demand and Response Control over power use.