July 2000

Columns

HP Automation Safety: Open means flexibility but also risk of reduced safety

I have heard about the promise of "open" control systems for many years now. During the "I'm more open than you are" advertising wars of the early '90s, many benefits were touted. These..

Goble, W., exida LLC

I have heard about the promise of "open" control systems for many years now. During the "I'm more open than you are" advertising wars of the early '90s, many benefits were touted. These included lower costs, high flexibility and the choice of "best-in-class" products from different vendors. The promise was a complete integrated control system with equipment from different vendors optimized for particular jobs. This equipment would simply plug and play together to reduce integration cost and save project time. Over the years, control equipment vendors actually began to deliver on some of those promises. I have seen human

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