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We are pleased to announce the release of the latest i-TRiLOGI version 7.52 with additional TBASIC commands to support new HTTPS and MQTT client commands available on Wx100 PLC with WiFi, keypad and graphical display (

The new version 7.52 inherits all the user-interface improvement introduced since version 7.4 (see,2456.0.html) and can be used for programming the Wx100, Fx2424, Fx1616 and any SmartTILE- based custom-made PLCs. All these new commands can be fully simulated using the i-TRiLOGI built-in simulator.

For more details of the new MQTT and HTTPS TBASIC commands, visit:

For the full i-TRiLOGI Reference Manual, visit:

To upgrade your current i-TRiLOGI, please click on its “Help” menu and select the “TRiLOGI Upgrade” option to visit the download link.

News / Release of New i-TRiLOGI Version 6.7 & 7.4
« on: May 08, 2021, 04:58:59 PM »
We are pleased to announce the release of the latest version of i-TRiLOGI with major improvements to the user-interface as well as to support the latest generation of Wx100 PLC ( with WiFi, keypad and graphical display.  The new i-TRiLOGI 6.7 is compatible with Nano-10, FMD88-10 and FMD1616-10 PLCs and the new i-TRiLOGI 7.4 can be used for programming the Wx100, Fx2424, Fx1616 and any SmartTILE- based custom made PLCs.

To upgrade your i-TRiLOGI, please click on its “Help” menu and select the “TRiLOGI Upgrade” option to visit the download link.
The following are some of the new features in the new i-TRiLOGI:

A.   Support of new Wx100 PLC

TRiLOGI 7.4 adds a list of new TBASIC statements and functions to fully support its integrated Wi-Fi networking and mini HMI that comprises a 16-key tactile keypad and a 128 x 64 pixel OLED display.

B.   Improved User Interface:

  • Deploys anti-aliasing fonts for sharper text display.
  • New multi-tab custom function editor allows up to 20 syntax-highlighted custom functions to be viewed on different tabs in the custom function editor window.
  • Allows you to insert a #Define name or Keyword directly into the custom function.
  • Adds search filters on all I/O label tables and the #Define table

News / New Internet PLC Forum Format
« on: August 08, 2019, 12:00:03 PM »
Greetings to all Internet PLC Forum members:

We have just migrated our Yabbse-based forum to the more modern "simple machines forum" platform. Besides better security, the new forum also allows members to select their own theme, to replace the default theme (e.g. you can change back to the old YaBB theme).

We have carried out a number of tests to ensure that all previous valuable posts, covering a wide range of topics on our PLC products, are still accessible to our users.

Should you encounter any problem using the new forum, please report to the webmaster via email and we will do our best to resolve the issues as soon as possible.

Thank you for your continued interest and support,  we hope you will enjoy using the new forum!

Best Regards,
The Webmaster

Making energy use smarter is one thing - doing so in an affordable yet full-featured way is another. Today, TRi  introduces ALEC, the “All-In-One Lighting Energy Controller” (, which is essentially a purpose-built PLC designed specifically to simplify the implementation of an Intelligent Lighting Control System. It is an embodiment of TRi’s  more than 20 years of PLC design and IIoT technology in a package that will change the way you think of Intelligent Lighting Control System.

Fully certified by UL/CSA for commercial and residential installation, an ALEC zone controller simplifies the design, installation and management of energy-efficient intelligent lighting controls, whether for a small office building or a multi-complex campus.

ALEC is the only lighting control system capable of meeting the most stringent building codes out of the box -- without requiring heavy customization, design time or labor, or specialized wiring systems. Whether you are in a jurisdiction that already requires the installation of intelligent lighting control systems in new buildings and buildings undergoing renovations (e.g. ASHRAE 90.1-2010, IEC2009/2012, California TITLE 24); or are seeking to increase your building's energy efficiency at minimal additional cost, ALEC is a simple, easy-to-install solution.

The modular ALEC system comprises three simple hardware components - a Zone Controller (ZC001), a standard push button wall plate, and Internet of Things (IoT) Gateway. This system can be scaled indefinitely to meet the needs of any-sized building or campus that you would like to place under ALEC's control. Each Zone Controller (ZC001) is a fully standalone control system that fits within a standard 4” round or octagonal shape electrical junction box and can:
•   Control up to 20 dimmable LED lighting fixtures within its zone
•   Sense motion (e.g. occupancy) within a 5 m (16 ft) range
•   Day Harvesting (aka Daylighting) Control - dim luminaire proportionally to daylight
•   Allow use of manual ON/OFF as well as dimming switches
•   Measure and report the AC voltage, current, and energy consumption of connected lighting loads
•   Store up to 20 years of daily energy consumption data (or 1 year of data measured at 15-minute intervals)
Up to 128 ALEC ZC001 units can be networked together with a single IoT Gateway to form an Internet-enabled lighting system, easily controlled from any connected computer, tablet, or smartphone via the ALEC Commander Pro software or the ALEC Mobile Config smartphone app.

For more details, please visit our new ALEC webpage at : or call 1-877-874-7527 – We will be glad to discuss your applications and potential partnership arrangement.

News / Software Release: i-TRiLOGI 6.51 & 7.11
« on: February 01, 2016, 10:57:03 PM »
We recommend everyone who is using the Ethernet on the Nano-10, FMD or Fx Super PLCs to upgrade to the latest version of i-TRiLOGI version 6.51 & 7.11 due to an important change that can significantly improve Ethernet communication performance, by eliminating packet collision issues that lead to packet losses and poorer communication throughput.

The main changes take place in the LAN speed selection on the “Ethernet & ADC Configuration” screen. In the previous i-TRiLOGI versions the software wrongly define the the Ethernet interface as Full Duplex and the resulting incompatibility with auto-negotiated Ethernet switches causes a duplexity mismatch between the PLC and the Ethernet switch which can lead to frequent collisions and loss packets. Although communication is possible due to robustness of TCP/IP the Ethernet interface is performing at less than its ideal capacity..

With the newly released i-TRiLOGI version 6.51 and 7.11, the Ethernet port will be correctly set half duplex, which we find to work extremely well with auto-negotiated Ethernet switches and that can vastly improve the Ethernet port performance.  

One you have installed the new i-TRiLOGI, all you need to do is to open the “Ethernet & ADC Configuration” screen and then click on the “Retrieve parameters from PLC” button to retrieve previous Ethernet settings. Then immediately click on the “Save Parameters to PLC” button and all the settings with be written back to the PLC and the Ethernet port will be set to 10 or 100Mbps Half duplex, which is the correct settings. This simple procedure is all you need to do to see immediate improvement in the Ethernet port performance.

The new software also allows the Ethernet port to be set to “auto-negotiation” for PLC firmware that supports this setting (>= r84G or F91.2, See Firmware Upgrading ). This is the only mode where a 100Mbps Full duplex communication can be established between the PLC and an Ethernet switch.

Note: These changes are also carried to the latest CO5 Uploader version 2.2. (CO5 Uploader is a free software that TRi provides to its OEM customers to allow re-programming the PLC without giving end users the .PC6 or .PC7 source files).

News / Official Release: i-TRiLOGI 6.50 & 7.10
« on: November 23, 2015, 04:33:01 PM »
We are pleased to announce the official release of the new I-TRiLOGI version 6.50 and 7.10 build 09.  A lots of new features have been added to make programmer’s life easier, such as mouse-over inspection to obtain the current value of any defined names , I/O labels  and variable.  Upgrade is free for all licensed users of i-TRILOGI 5.xx, 6.xx and 7.xx. To upgrade your software, simply open your current I-TRiLOGI version 6 or 7 and select “Help-> TRiLOGI Upgrade” to enter the upgrade page.

Please visit the following page for a quick glance of all the new features in this new release:

These two new iTRiLOGI versions are designed to run on the default Java Run Time Environment on your PC instead of relying on JRE 1.4.9_19 in the previous versions.  

We would like to express our thanks to all users who have actively contributed their time and effort to test the beta versions of the software since August this year. We hope the new features will help to improve your productivity in writing Ladder+BASIC programs.

The following forum thread contain some screen captures describing the new features as well as discussions of some Java related issues that users encountered in upgrading from the older version, which may be a valuable reference:;action=display;threadid=2176

News / Announcing Launch of Nano-10 PLC
« on: April 08, 2010, 11:23:36 AM »
We are pleased to announce the launch of the Nano-10 PLC. It is a 10 I/O PLC with built-in Ethernet, Modbus TCP, stepper motor control, PWMs, high speed counters, pulse measurement. Support Modbus RTU via RS485 and Modbus TCP via Ethernet.

Nano-10 shares most of the capability of our top-of-the-line  F-series PLC except with lesser number of I/Os. At only USD129 each this product can empower small machines that needs just a few I/Os to perform highly sophisticated control such as peer to peer communication over the Internet, emailing, control from a web browser or iPhone. You can design a customized web page for controlling your equipment without learning anything about Javascript programming language. To find out more, please visit:

News / New i-TRiLOGI Version Release Notification
« on: January 18, 2009, 10:46:47 AM »
i-TRiLOGI Version 6.41 build 01 is now available for download.

Licensed user of i-TRiLOGI (Production version) please click on the i-TRiLOGI "Help" button and select "TRILOGI Upgrade" to download upgrade from our website.

News / Application Notes Page Goes Live!
« on: December 11, 2007, 10:00:37 AM »
We are pleased to announce that a special web page has been set up to present some application notes on using our PLC in various applications. Sample source codes and detailed explanations are included for free download.

To view the application notes, please mouse over the menu tab on this website:

"Application -> Application Notes"

Currently five new application notes have been presented. More application notes will be added as we develop and test sample PLC programs for various applications. We welcome suggestions for common applications that you feel was not yet clearly explained by the Programmer's reference, or covered by the sample programs included with TRiLOGI software or FAQ board in the forum page.

Technical support / Suspension of New Member Self-Registration
« on: October 29, 2007, 12:02:36 AM »
Due to a spate of attacks by spambots which register themselves with random usernames and email addresses for the purpose of spamming this forum, we are temporarily suspending self-registration of new forum members.  However, existing member may continue to post messages uninterrupted.

If you wish to join as a new member please email to with the following details:

1) Desired username
2) Your name
3) Your company
4) Your email address
5) Are you a current user or TRi's PLC or peripheral products?

We will then set you up as a new member and you can then log in to update other details in your online profile.

We regret any inconvenience cause. The self-registration will resume after we have come up with an effective scheme to defeat these spambots.

News / LCD Touch Panel HMI with TRi Driver
« on: July 18, 2006, 03:22:13 PM »
KEP (Kessler-Ellis Products) has just announced that they have written a TRi specific driver for their range of LCD touch panel that uses TRi's proprietary host link command protocol. Hence this makes the KEP range of HMI not just fully compatile with the T100MD+ and T100MX+, but also extremely simple to program and they are able to access ALL PLC internal variables, including string, EEPROM, ADC, DAC, RTC etc. Please visit the following link for sample project created using KEP HMI:

Note: Although T100MD+ and T100MX+ can be used with any third party Touch Panel HMI that supports the MODBUS protocol, there are some limitations in using the MODBUS driver approach since the MODBUS protocol is unable to access the PLC's String data, EEPROM data as well as ADC, DAC data etc. Hence we recommend KEP HMI for users looking for a HMI that are more specific to our M-series PLCs.

General Discussions / MOVED: Installing a printer on 100MD-888+
« on: May 05, 2006, 11:44:31 PM »
Relevant to T100MD+ PLC so move to Tech Support forum for benefit of other users.;action=display;threadid=852

News / New BBS ?(Started on Feb 25, 2002)
« on: February 24, 2002, 08:25:17 PM »
Hello Everybody,

We have just migrated to this new bulletin board on Feb 25, 2002. If you are interested in reading the old postings between Sep 1, 2001 and Feb 24, 2002. please visit the following weblink:

Have fun!

News / TRi's PLCs featured in Circuit Cellar Ink
« on: February 27, 2002, 07:12:59 PM »
We are pleased to inform that the March 2002 issue of Circuit Cellar Ink[/color], a highly respected magazine that is widely read by control engineering professionals, has done a first part feature of the Internet-programmable PLC family from Triangle Research International, Inc. Part II of the feature will appear in the April 2002 issue of the same magazine.

The hyperlink to the articles featured in Circuit Cellar Ink will appear here as soon as it is available.

Technical support / How to change PLC's ID in TL5?
« on: March 13, 2002, 12:34:09 PM »
In TRiLOGI Version 5.0, the PLC's ID can only be changed from the TLServer using the host Link commands that you enter at the "Serial port Setup" screen. But first of all you need to know the current ID of the PLC (default is 01) which you can check using the "IR*" command. You will then enter the multi-point format of the "IWnn" command to change the PLC's ID to nn (hex).


"@01IW0500*" to change the PLC ID to 05. (original ID=01)
"@05IWB400*" to change the PLC ID to B4 hex (original ID=05)

(the "00" is a wildcard FCS which overwrite the need to enter the correct error check code called the FCS). Always use IR* to verify that the ID has been correctly changed to the desired number.


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