http:\/\/www.barn.org\/FILES\/historyofplc.html<\/a><\/p>\n\n\n\nThis is a verbal history of the very first PLC, narrated by its chief architect, Dick Morley. It’s well worth a look, and while you are there look around the other stuff on the site. What struck me about it was the pre-occupation with making a box that was reliable. I remember those days (1968-ish) quite well myself. I was an even younger \ud83d\ude42 engineer then, and involved in a couple of ways with selling minicomputers, mainly the PDP8 and a bit later the original Nova. The machines cost something like A$25,000 (that was about 5 year’s pay to me at the time), and came with a 3 month warranty. That’s right, 3 months! The rationale was that the semiconductor components exhibited “infant mortality”, so if it was going to fail it would be within the first 3 months. After that you were on your own.<\/p>\n\n\n\n
So, is SPLat a PLC? By Dick Morley’s standards, no it’s not. SPLat is an embeddable board level controller aimed at OEMs. We see our customers as being product makers who need a controller in their product. Mr Morley’s programmable controller was intended for factory automation, which is a quite different thing. Dick Morley’s product came in a cast iron case. Ours comes as a bare board, ready for you to integrate into your own product packaging.<\/p>\n\n\n\n
Anyhow, take a look at the site<\/a>. It’s a fascinating read.<\/p>\n","protected":false},"excerpt":{"rendered":"History of the PLC I came across something interesting while checking out our Google ratings (#1 spot under “programmable logic controllers” plus listings on several…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1346,"menu_order":4,"template":"","class_list":["post-1361","spl_knowledgebase","type-spl_knowledgebase","status-publish","hentry"],"acf":[],"yoast_head":"\n
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