Have you ever thought about how many average families have been changed by having GPS devices in our cars? Just think back to the (not so) good ol’ pre-GPS days when you pretended you knew where you were going, only to find out you didn’t, and you never heard the end of it. When those wonderful gadgets came along, they put a stop to all the arguments about directions. Yet the change snuck up on us so quietly, it went mostly unnoticed.
Working in our industry it is impossible to avoid bumping into the HART Communication protocol. Introduced in the mid-1980s by Rosemount as an attempt to find an inexpensive, almost trial way to get more information from smart field instrumentation, it later developed into something that finds its way back even when it seems to have outlived its purpose.
Soon after the acronym DCS appeared, more than 30 years ago now, discussions about what system is “best” cropped up among control engineers.