Voices: Hebert

PLCs and PACs Can Solve the Protocol Translation Problem

Using PLCs or PACs and Ethernet as gateways to digital communication protocols can be a low-cost alternative.

By Dan Hebert
Jan 2, 2015

Most process plants use many different digital communication protocols, so conversion is required. A DCS can often perform protocol conversion, but generally at a very high cost. A better alternative in many cases is using PLCs or PACs as protocol conversion gateways, and then connecting the PLC or PAC to the DCS via Ethernet. For plants controlled by one or more PLCs or PACs instead of by a DCS, the PLC or PAC becomes the gateway by default.

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