Modbus TCP Master Sample
Application Revision 1.02
Prepared by Pyramid Solutions, Inc.
This document describes the application and use of the Modbus TCP Master Sample
Application. The program was written to run on a Control Logix 5000 processor with
a compatible Ethernet Module.
This sample application can be used standalone by adding any required logic for your application, or can
be added to an existing application following the directions outlined below.
The audience for this document would be Software engineers, controls engineers, and application
engineers familiar with Logix 5000 controllers, RSLogix 5000, and Modbus TCP protocol and its uses.
Knowledge of the use of the Modbus protocol is crucial to using this application.
This application will allow you to create a Modbus TCP Master capable of connecting to multiple Modbus
TCP compatible slaves(s) to read and write control data. There is also a Modbus TCP Slave Sample
application if a slave is desired, i.e. you need to be connected to by a Master.
This application is provided as is and there is no Warranty or implied merchantability.
See the Rockwell Sample Code Download Terms and Conditions.pdf that was downloaded with this
document for more information on Acceptance of Terms and Conditions. Your rights to download and use this
content are limited and can be revoked at any time. No support contract is implied or delivered with this code
or any modified version of this code.
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