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<h1 align="center">Free Windows Modbus Master</h1>
<p>I've build this page to share my learning of modbus protocol with anyone interested.
You will find here some Windows 95 software to communicate with modbus slave devices. <strong>All
software here are freeware and all source code it's also included</strong>, I don't know
any other freeware Modbus Master , but there are many commercial products , see the <a href="#Links">link section</a> .</p>
<p>My English is awful, but I hope that you understand the documentation.</p>
<p>The purpose of this page is not to teach modbus protocol , if you are looking for this
information try these sites inside Modicon:</p>
<blockquote>
<p><a href="http://www.modicon.com/techpubs/toc7.html">http://www.modicon.com-techpubs-toc7.html</a>
- this is the basic document that explains modbus protocol.</p>
<p><a href="http://www.modicon.com/OPENMBUS/">Modbus-TCP Homepage</a></p>
</blockquote>
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Since September 6 1998</font></a></p>
<p> </p>
<p>The software , or source code , present on this site are the following:</p>
<blockquote>
<p><a href="cmodbu.htm">MFC C++ classes</a>. These classes implement modbus protocol over
serial ports using RTU or ASCII transmission. There is also a class that is used for
communicate with slaves through TCP/IP network using <a href="http://www.modicon.com/OPENMBUS/">Open Modbus protocol</a>. The C++ source was build
using Visual C++ 5.0.</p>
<p><a href="Autosrv.htm">Modbus Master Automation Server</a> - <font size="3">This is an
ActiveX out-process (.exe) server. It's intended to be used with any tool that support
automation like Visual Basic , Microsoft Office app's (Excel, Word97, Access), etc. You
can use this component to communicate with modbus slaves using serial port or </font>through
TCP/IP network. It's also works as an interface between TCP/IP clients and serial devices
connected on a serial port.</p>
<p><img src="images/modsrv.gif" width="536" height="79"><br>
Fig 1 - Connection using open modbus protocol with slaves that use RS-232 for connecting
with a PC. </p>
</blockquote>
<blockquote>
<p><a href="client.htm">Modbus Automation Client</a> - This is a simple application that
use the ActiveX server and is intended to test the installation, read and write registers
or coils.</p>
<p><a href="JavaC.htm">Modbus Java Class</a> - This java class works as TCP/IP client
mentioned above. You can not access serial ports directly with this class, you can use <a href="client.htm">Modbus Automation Client</a> to configure the <a href="Autosrv.htm">Modbus
Master Automation Server</a> to communicate with Java Clients and serial devices. This
class can be used to build applets that run inside Internet Explorer or Netscape. </p>
<p><em><strong>Download:</strong></em></p>
<p><a href="http://www.microsoft.com/com/dcom95/download.asp">Microsoft DCOM for Windows
95</a> - Install DCOM95 if you are using win95.</p>
<p><strong><em>The Tripod service where this page is hosted has some kind file cache
server for the zip files. The download of zip file can take some time to start or maybe
you have to retry the download of the desired file. Sorry for this inconvenience.</em></strong>
</p>
<p><a href="archives/mfcatl.zip">mfcatl.zip</a> - MFC and ATL Run-Time Files<strong> ( </strong>mfc42.dll,Msvcrt.dll,Atl.dll)
from Visual C++ 6.0. This version is compatilble with programs made with Visual C++ 5.0.
Download and install these files if you do not have Visual C++ 6.0 with the latest service
Pack. </p>
<p>You need a version of zip that support long file names. Maintain directory structure
when extracting files.<br>
</p>
<p><strong>Version 1.01 - Made with Visual C++ 6.0</strong></p>
<p><strong>Source Code</strong> -<a href="archives/modsrc01.zip"> modsrc01.zip</a> - This
file contain all source code,MCF, Automation Client ...</p>
<p><strong>Executables and Documentation</strong> - <a href="archives/mod101.zip">mod101.zip</a>
- All the html files of this site and the files needed to install the programs in your
computer.</p>
<p><strong>Version 1.00 - Made with Visual C++ 5.0</strong></p>
<p><strong>Source Code</strong> -<a href="archives/modsrc.zip"> modsrc.zip</a> - This file
contain all source code,MCF, Automation Client ...</p>
<p><strong>Executables and Documentation</strong> - <a href="archives/mod101.zip">mod100.zip</a>
- All the html files of this site and the files needed to install the programs in your
computer.</p>
<p> </p>
<p><strong>Additional Samples </strong></p>
<p><strong>Delphi Sample</strong> - <a href="archives/DelphiEx.zip">DelphiEx.zip</a> -
Simple dephi sample made by Alper Celik ( <a href="mailto:alper_celik@yahoo.com">alper_celik@yahoo.com</a>
) </p>
<p> </p>
<p><em><strong><a name="Links">Links</a>: </strong></em></p>
<blockquote>
<p><a href="http://www.modicon.com/techpubs/toc7.html">http://www.modicon.com-techpubs-toc7.html</a>
- this is the basic document that explains modbus protocol.</p>
<p><a href="http://www.modicon.com/OPENMBUS/">Modbus-TCP Homepage</a> - This page will
find information about open modbus protocol used to send modbus messages over TCP/IP
networks.</p>
<p><a href="http://www.win-tech.com">www.win-tech.com</a> - They have some software modbus
products like ActiveX Modbus Master control and slave simulator.</p>
<p><a href="http://www.automatedsolutions.com/index.html">Automated Solutions</a> -
ActiveX Modbus Master control .</p>
<p><font size="3" face="CenturyGothic"><a href="http://www.robustdc.com/">www.robustdc.com</a>
- This company have information about Modbus/TCP protocol and hardware solution to
integrate RS-232/485 devices with an Ethernet network.</font></p>
<p><a href="http://www.softwaretoolbox.com/">Software Toolbox</a> - You can find here many
ActiveX/OCX components to communicate with modbus slaves , there are no free software, but
you can find many demos and the documentation of these demos can be very instructive.</p>
<p><a href="http://www.microsoft.com/win32dev/base/serial.htm">Serial Communications in
Win32</a></p>
</blockquote>
</blockquote>
<p align="center"><a href="mailto:rsaat@altavista.net"><strong>Author - Ricardo Saat </strong></a></p>
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