You're all right that safety isn't just an option anymore, and it seems like manufacturers are well aware of this fact and supporting this trend. Rockwell also just came out with some tools to help engineers navigate safety as they are designing machines: http://www.designnews.com/document.asp?doc_id=262277
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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