LogixPro is a PLC simulation software that replicates AB RSLogix 500 and has the same function and front end, its cheap enough to buy.
I have had a go of it and its a reasonable start point if you understand logic LogixPro 500 PLC Simulator by TheLearningPit.com
Reply to the thread, titled "Control system training help" which is posted in Commercial Electrical Advice on Electricians Forums.
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