Modbus Unsolicited OPC Server - KEPServerEX OPC Servers

Overview

Kepware's 32 bit Modbus RTU Slave device driver works in conjunction with our OPC Server KEPServerEX, to provide data exchange between OPC Clients and a Modbus RTU network. The Modbus RTU Slave driver allows a OPC client application to appear as 1 to 247 Modbus RTU devices on the network. The slave mode allows the server to receive data by exception from a Modbus RTU master. Typical applications include connectivity with larger DCS systems that utilize Modbus RTU. As with any slave device, the Modbus RTU Slave driver will only transfer data when being read or written by a RTU master. Data integrity is ensured with our extensive error handling.

This driver is part of the Modicon Modbus Communications Suite. Purchasing either the Modbus RTU OPC Server, Modbus RTU Slave OPC Server, Modbus ASCII OPC Server, Modbus Plus SA85 OPC Server, or the Modbus Ethernet TCP OPC Server entitles you to all five drivers.

Modbus RTU Unsolicited OPC Server

Devices

Supported Devices

Device	Note
Any Modbus compatible devices.

Features

Specific Driver Features

Specific

Modbus RTU Multi-drop Supported
Can appear as Multiple Modbus Slave devices.
Station numbers selectable from 1-247.
Full Address Range Support ( 0 - 65535 ).
Hex Addressing Support (0-FFFF)
Adjustable Address Base ( 0 or 1 )
Word Order Swapping on Floating Point and Long
Data Modbus RTU functions accepted by Slave: 01, 02, 03, 04, 05, 06, 16

General

Multi-threaded design for optimum performance.
Application Connectivity
Device Connectivity for concurrent devices.
Supports running as a Windows NT Service.
Supports Direct Scaling of device data.
Full Time On-line operation.
CSV file import and exportof server tags.
User Management
Tag Management
Network Interface Selection
Channel Diagnostics provide real-time data.
OPC Diagnostics to view OPC events.
Modem support for all serial drivers.
OPC Quick Client application.
Visual Basic OPC Client with VB Examples.

OPC/DDE

OPC Data Access Version 1.0a
OPC Data Access Version 2.05a
OPC Data Access Version 3.0

Learn more about OPC - Open Process Control

HMI/Client

KEPServerEX has been enhanced to provide the widest range of connectivity of any server product available. KEPServerEX supports the following client server technologies:

FastDDE for Wonderware
SuiteLink for Wonderware
iFIX PDB for Intellution
DDE Format CF_Text
DDE Format AdvancedDDE

To see a list of HMI's and Clients that we support go to our HMI / Client Support page.

Required

Required Software and Hardware

Supported Operating Systems

Windows NT
Windows 2000
Windows Server 2003
Windows XP

PC Hardware

Minimum

400 Mhz Pentium CPU
128 Megs of RAM
100 Megs of Free Hard Drive Space

Recommended

600 Mhz Pentium CPU
512 Megs of RAM
100 Megs of Free Hard Drive Space

Hardware Requirements

For Device and Hardware Requirements see the Devices tab.
Hardware Accessories

Protocol

Communication Protocol

Modbus RTU Protocol.

VB

Visual Basic

KEPServerEX Visual Basic OPC Client
Complex and Simple Visual Basic OPC Client Examples
Using Modems and Visual Basic with KEPServerEX.
Download the Modem and VB Example with Source Code
Knowledge Base

Help

Help/Links