Thanks Jon, it was fun to see that the reference for the article was a Sams book from 1977. Back then one of the toughest design issues was how expensive, or difficult it was to obtain precision capacitor values. We use the same circuits today and don't think twice about buying 5% capacitors.
The series now can interface with a wider array of EtherNet/IP-compliant hardware across many industrial sectors, including factory automation systems, plastic injection molding apparatus, and materials-handling equipment.
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