How to Configure Kepware KEPServerEX 5.0 for Communications with Modbus I/O Modules – 8500880
Configuring Kepware KEPServerEX 5.0 for Communications with Acromag BusWorks Modbus I/O Modules
This document provides example steps for configuring the Kepware KEPServerEX OPC Server for communications with Acromag Busworks Modbus RTU and Modbus TCP/IP Distributed I/O Modules. Once the server is configured, data may be read from or written to the I/O module using an OPC compliant client application.
The following hardware and software were used in the creation of this document:
- Microsoft Windows XP Professional – Service Pack 3
- Kepware KEPServerEX (version V5.0.1176.0 – U) with Modicon Modbus Driver Suite
- Acromag Model 914MB Quad DC Voltage Input (Modbus/RS485)
- Acromag Model 983EN-4012 12 Tandem Digital Input/Output (Modbus TCP/IP)
This application note is a supplement to the information found in Kepware’s KEPServerEX and Modbus Driver help documentation. Please refer to those documents for additional details about the configuration steps discussed in this application note.
Note that this document does not cover the DCOM and firewall configuration settings required to allo
w remote clients to connect to the server. Good sources of information on this topic are the Kepware and OPC Foundation websites.
Starting a Server Project
Select File | New from the menu or click the New Project button on the toolbar. Throughout development, the project can be saved via the File menu or the Save button on the toolbar. The file will be saved with the name you specify and an “.opf” extension.
Add a Channel
The steps for adding and configuring a channel differ depending upon whether you will be using a Mobus RTU or a Modbus TCP/IP module. This step determines the communications driver(s) that will be used by the application.
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