FREE: Ladder Logic Editor and Simulator for Windows.

The Industry's most popular FREE PLC Simulation software
More than 100,000 downloads between 2000-2005!

"TRiLOGI" is the name of the ladder or ladder+BASIC programming software for the E, H and M-series of PLCs. The are several versions of the software available for the different PLC series.

All TRiLOGI versions have built-in Simulator which allows ladder or ladder+BASIC program to be simulated on a PC without purchasing the PLCs. As such the TRiLOGI software is the ideal training tool for learning about PLC programming. Click Here to test run Internet TRiLOGI without Download

Ladder Logic Editor

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Off-Line Simulator

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Get Your Free Educational PLC Simulator Software

We have always made available educational versions of the TRiLOGI software for free download by anyone! This highly acclaimed PLC software is fully functional (not time-limited) and has been used by many companies, colleges and technical institutes in many countries to train new users on ladder logic programming, including Australian RMIT, TAFE and Old Dominion University of the USA, Purdue University, State University of New York, Kent State University and many other colleges and universities around the world (See PLC course instructor's comments).

The new Internet TRiLOGI Version 5.3 runs under Windows 95/98/ME, Windows 2000, NT or XP, making an already highly effective PLC learning tool better than ever! PLEASE REGISTER USING THE FOLLOWING FORM. Our autoresponder will email you the password-protected download link and the username and password for logging in to our website.

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Please make sure that the email is correct! The auto-responder will email the download link and the required username/password to you.

Privacy Policy: Triangle Research International (TRi), Inc. WILL NOT disclose or sell your information to any other companies. We may occasionally send you news on new product release or new software version, but we will not bombard you with regular newsletters and we honor all requests for removal of email addresses immediately.

Note to Professors: A Free TRiLOGI software for Every Student!!

We welcome any technical institutes and colleges to use the TRiLOGI software to train students on ladder logic programming at no charge at all! We would appreciate it if you could email to us at: support@tri-plc.com to inform us that you will be providing a link to our website at:

http://www.tri-plc.com

so that the students can download the TRiLOGI software from our web page to do their homework! Suggestions and feedback on our products would be greatly appreciated. Please tell your friends and colleagues about the program if you enjoy using it.

Internet Trilogi PLC software Tutorial
     - by Prof T.C. Chang, Purdue University, Indiana.

PLC Training Course Instructor Comments:

"I use TRiLOGI in the college classroom. I have each student download and install TRiLOGI on their home computer, and I then give them programming assignments to do at home. They individually write, run and debug their PLC programs, and then email their program files to me for testing and grading. Since TRiLOGI will simulate PLC operation off-line, each student is able to obtain hands-on programming and debugging experience without having to wait for their turn on an expensive laboratory PLC. The students enjoy using TRiLOGI because they can see their programs run at home without loading them into an actual PLC, it is easy to learn, and the cost for the off-line version is zero."

Prof John Hackworth, Old Dominion Univeristy
http://www.eng.odu.edu

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