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 5209 NW 50 AVE. SUITE 202    MIAMI, FL. 33166 USA    1-888-832-7568 Toll free   305 593 8999 Tel     1-775-637-6825 Fax

These PLCs have been very famous in Asia. You will be surprised after knowing that several applications are located in the most hostile environments: From sea platforms, goal minery and cement factories.

Size, features and excellent price are turning these PLCs as a very good alternative to replace those bulky and expensive PLCs you currently use.


If the cost is only a 30% of the current automation budget... don't you think that you should

re-consider your ideas about using expensive PLCs?

The H-series PLCs are a family of small, low cost, pure relay-ladder logic (i.e. No BASIC) based PLCs that are available since 1993. The family spans from the T22H with 12 inputs, 10 outputs to the T64H with 40 inputs and 24 outputs. Members of the H-series controller family differ mainly in the number of I/Os (inputs/outputs), and the type of I/Os they carry (relay or transistor outputs, PNP or NPN types, opto-isolator inputs or high voltage inputs, etc). Since each different PLC model has different wiring requirements, please refer to their respective Installation Guide on the wiring methods and installation details. The number of I/Os, timers, counters, internal relays as well as the maximum allowable program steps are also stated in the Installation Guide.

All H-series PLCs are original programmable by means of only the DOS version of TRILOGI software. However, in response to popular customers' request,  in Q4/2003 we introduced the Windows version of the TRiLOGI software - WinTRiLOGI version 3.5,  specifically for programming the H-series and E10+ PLCs.

The H-series PLCs includes the T22H-npn, T28H-Relay, T40H-Relay, T44H-pnp, T44H-npn and the T64H-Relay. The following table summarizes the number of I/Os, timers, counters and internal relays for each existing model:

The mighty little T22H programmable logic controller packs 22 high current, high voltage I/O, 20 timers and 20 counters into a small pocket-size board (See photo, it is about the same size as a 3.5" floppy disk). T22H-npn PLC features high quality, detachable screw-terminal blocks for ease of field wiring and ease of maintenance. The 12-24V DC input interface and high current (1.0A per point) outputs permit T22H to drive solenoids, contactors or small motors directly.

A basic T22H controller comprises 12 inputs, 10 solid-state transistor outputs, 128 internal relays, 20 timers, 20 counters and 8 sequencers. It has a built-in RS232/RS485 port which communicates with the PC using a simple DB9 cable.

Designed specifically for power control purposes, the T28H-Relay is the only programmable logic controller that offers 12 high current (10A @ 250V AC), individually isolated relay outputs. The 2500VA contact rating for every output makes T28H-Relay the only true power controller in the industry.

Each T28H-Relay controller comprises 16 inputs, 12 outputs, 128 internal relays, 20 timers, 20 counters and 8 sequencers. In addition to basic high-speed AND/OR/OUT instructions, T28H supports a number of useful special functions such as sequencers, reversible up/down counters, differentiated instructions and latch relays to handle the most demanding applications.

Designed specifically for power control purposes, the T40H-Relay offers 16 high current (10A @ 250V AC), isolated relay outputs with 8 common terminals (every two output shares one common). The 2500VA contact rating for every output makes T40H-Relay and its sibling - T28H-Relay the only true power controllers in the industry.

Each T40H-Relay controller comprises 24 bi-directional opto-isolated inputs, 16 outputs, 128 internal relays, 20 timers, 20 counters and 8 sequencers. In addition to basic high speed AND/OR/OUT instructions, T40H supports a number of useful special functions such as sequencers, reversible up/down counters, differentiated instructions and latch relays to handle the most demanding

Although H-Series PLC may look like an ordinary single-board computer, they are all programmable using the "Relay-Ladder Logic" language which is the most popular programming language used by all major manufacturer of PLCs such as Allan-Bradley, Siemens AG and OMRON, etc. Although programs written in Relay Ladder Logic cannot directly manipulate the microcontroller's internal hardware as easily as the assembly language, such programs are however much easier to write and are generally understood by all electricians around the world who need not have any knowledge about microcontrollers at all.

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

Real Time Simulation

On-Line Monitoring and Control

Use of Meaningful Label Names

While constructing your ladder program you can simulate it using TRiLOGI's unique real-time Simulator. When you invoke the Simulator, you will see a full screen of I/Os organized into 7 columns

TRiLOGI can monitor the status of all the I/Os, Timers and Counters of the PLC via its RS232C port. It also permits you to pause the PLC and remotely forced-set or reset any I/Os or even modify the current value of the internal Timers and Counters. The I/O status can either be monitored on a full screen display similar to the Simulator-screen, or directly on the ladder diagram. This feature helps greatly during debugging and fine-tuning of your ladder program.

In TRiLOGI all the I/Os must be defined with unique label names prior to using them to construct the ladder program. Up to 8 characters of alpha-numeric names can be defined which means you can create ladder diagram using far more meaningful names such as "Start" and "Fire" instead of 001, 205 etc. Once defined, the I/O names will be used throughout the entire session of program creation, simulation and monitoring. Any experienced programmer would be know that a program with meaningful names is far easier to create, debug and maintain than one made up of numbers only. Coupled with the powerful Simulator, you have to try it to believe how easy it is to develop your control program using TRiLOGI !

Password to Protect Intellectual Property

TRiLOGI allows you to set password protection on the target PLC to prevent unauthorized uploading of your ladder program.

PLC Training Course Instructor Comments:

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

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