The Most Unconventional Guide to PLCs on the Internet 

Since the late 1960's, the Programmable Logic Controller (or PLC) has become an essential aspect of any automated manufacturing process.  In recent times there have been contenders to replace the PLC but the priniciples and popularity of those early PLC's functions and concepts have continued unabated.  It is essential for many people from the technician to the engineer to understand these essential pieces of equipment.

PLCDev has developed this instruction manual "PLC Basics" in hopes it will serve the beginner to the advanced user.  Our goal is to make it comprehensive as possible, providing not only the generic principles in all PLCs, but to give practical examples from many different PLC manufacturers.  To this end you are welcome to comment on each section by registering as a user and clicking the "add a comment" link at the bottom of the page.

"I'm writing a book. I've got the page numbers done. " --- Steven Wright