hello rjp21;
And welcome to our little group! Its always a pleasure to meet someone who wants to learn.
First, this site is a good place to start. For general infop opn PLCs, look at the top of this page, and click on the Learn PLCs menu. You should find the contents interesting.
I have also found Phil's book on PLCs very clear and interesting. Look at the Buy The BOOK icon also omn the top of the page.
Alternatively, every PLc manufacturer offers web-based training or pdf documents introducing their material. For example, look at the PLC for beginners training offered by siemens on their Sitrain page:
http://www.sitrain.com/html_76/f_16.html
Have a look at Rockwell's webpage (
www.ab.com) and most other PLC retailers for more of the same.
there are also many other sites you can access: patchn.com, eng-tips.com, control.com....
Finally, i can suggest a formidable book you can download from the Internet called "Automating Manufacturiong systems with PLCs", by Hugh Jack. One of the best of its kind, and unbeatable for the price. I have lost the link, but maybe soomeone else from the forum can point it out; alternatively, look it up under Google.
Welcome again, and good reading. Feel free to ask here if you nneed any explanations.
Hope this helps,
Daniel Chartier
