Free online PLC training, this free online PLC simulator teaches timers http://www.koldwater.com/SCORMDemos/plcu8_ktech/safari3/index.html?dhtmlActivation=inplace (Google chrome block script, so use another browser for this one.)
You will want to hurry while free Troubleshooting Training simulator is still there. You will find download link on Koldwater's home page. after installing, your User Name: Free TSTrainer Activation Code: 05132004AFCC-Free http://www.koldwater.com/Electrical-PLC-Troubleshooting-Training.html
Free PLC Simulator CD come with the PLCTrainer CD $159.00 so you can first learn PLC training basics using RSLogix 500 (via PLC emulator) then move on to free LogixPro PLC simulator CD. http://bin95.com/ebooks/plc_training_simulator.htm A much smarter approach to PLC training. Click picture to learn more!