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Windows Version | DOS Version | Browser Version

The Industry’s most popular FREE PLC Simulation software

More than 50,000 downloads in 2000-2002!

"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. The M-series super PLCs are programmable using either the Windows version 5.1 or the DOS version 4.13. The E10s and H-series PLCs are only programmable using the DOS version 3.3 of TRiLOGI program.

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. We have always made available educational versions of the TRiLOGI software for free download by anyone! This highly acclaimed PLC software 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 5.1 runs under Windows 95/98/ME, Windows 2000, NT or XP, making an already highly effective PLC learning tool better than ever!

1. Download TRiLOGI Version 5.1 Help File

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.

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

How is Educational Version different from Production Version?

Educational version of TRiLOGI 5.0 is a complete (not a crippled version) software package for learning about PLC programming and for users to evaluate the power of Ladder+BASIC software programming. There is no performance limitation and you are able to create and save your programs on a local hard disk, simulate the programs and print them out into hardcopies. The program files you created using the Educational version is identical to that of the Production version so you can write and test your entire program to make sure that it can do what you want before purchasing the PLCs for actual applications!

The Educational version of TRiLOGI is almost identical in every aspect to the Production version of Internet TRiLOGI 5.0, except that:

  1. It does not include the web server (TLServer) which can turn your PC into a web server to allow you to remotely load the TRILOGI as an applet using a web browser so that you can remotely program/monitor your PLC via the Internet.
  2. It does not allow you to connect to a PLC or the TLServer for programming and monitoring of PLC operations.

However, we do provide mock-up simulated sessions for program transfer and on-line monitoring so that you can have a feel of the actual process of PLC programming and on-line monitoring.

How is TRiLOGI 5.0 different from DOS Version?

Advantage of Version 5.0

  • Running under a windowing O/S, the new version 5.0 software is more user-friendly and it allows you to open several different windows such as the ladder editor, the simulator and variable view windows simultaneously. You can observe the I/O states that are changing in all the open windows simultaneously as the program executes, making an already effective PLC ladder learning tool better than ever!
  • Monitoring I/O states on ladder diagram and full screen simultaneously - this was not possible with the DOS version.
  • Printing under Windows (with Print Preview) generates beautiful print outs for your project or assignment report.
  • Most of the keyboard interface in original TRiLOGI has been carefully preserved. Experienced users of DOS version of TRiLOGI will feel at home with the new window version.
  • TRiLOGI Version 5.0 can read all ".PC3", ".PE3" and ".PC4" files created by the DOS version of TRiLOGI, thereby maintaining backward compatibility with the DOS version of TRiLOGI.

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 University http://www.eng.odu.edu