PLC programming

[new guy]

can anyone help me with any sources for learning how to program PLC'C that are used to run machinery and also how to diagnose programs on an already existing machine. Books, Websites, Inexpensive courses?

[philba]

a quick google of "PLC primer" turned up pages of links, all of which look exactly what you want.

[jlt1945]

One that I'm familiar with and would recommend is
www.thelearningpit.com . They have a very good simulator for Allen-Bradley PLCs and you can download a demo. The full function copy is only about $30. We use it to teach PLCs at my school.
Joe

[chakorules]

One of my colleague friends, Hugh Jack has written a 800+ page PDF on Allen Bradley. It’s a FREE download:
http://forum.mrplc.com/index.php?act=Do ... =02&id=156<p>Also, I have written many PLC programs and have offered them for download here:
http://forum.mrplc.com/index.php?act=Do ... chakorules<p>I have many, many, many samples that you can download my source code and learn. Some of my examples are PDF format.<p>Good luck