AutomationDirect's Free CLICK PLC Software. Not a simulator, but actual free PLC programming software. click http://support.automationdirect.com/products/clickplcs.html
PLC Simulator free training demo download - Allen Bradley RSlogix Simulator brand (Free version only works on 32 bit, paid version works on all including 64 bit)
Free featured PLC Training Assessments from our free Employee Training Assessment area on www.bin95.com. (uses our free Employee Training Assessment tool to create quizzes)
Free engineering software and videos for training This page explains how to get free maintenance, manufacturing, engineering software and videos for training. It's as easy as 123.