KEPServerEX Modbus Suite


Modbus Suite


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The Modbus Suite for KEPServerEX is a collection of Modbus drivers, bundled together for convenience. It provides application access—including OPC data access—to Modbus-compatible devices, enabling users to easily configure fast and reliable Modbus connections. The Modbus Suite supports multiple Modbus protocols (including TCP, RTU, ASCII, and more) from a single license.

Used across many industries worldwide, Modbus is recognized as a simple and universal industrial automation communications protocol. Kepware’s Modbus drivers support a wide variety of Modbus-compatible devices and models, and both master and slave connections.

As a member of the Modbus Organization—an independent group dedicated to the adoption and evolution of Modbus protocols across multiple market segments—Kepware is committed to the continuous improvement of its Modbus solutions. Kepware’s Modbus Suite is included in the Modbus Organization product database.


  • Provides OPC data access
  • Supports high-performance Ethernet Encapsulation for using Modbus serial protocols over an Ethernet-to-Serial converter
  • Supports both master and slave connections
  • Provides adjustable coil and register blocking options
  • Includes zero-based and one-based addressing
  • Provides byte order swapping (Modbus or Intel) capabilities
  • Includes hold register bit mask writes
  • Supports common Modbus variants for flow computers
  • Includes Modbus TCP Framing for the Modbus Serial driver
  • Supports Modbus TCP-enabled devices
  • Supports Modbus UDP-enabled devices
  • Incorporates a multi-threaded design for Windows sockets

Available Languages

  • English
  • German
  • Japanese
  • Simplified Chinese


Component Drivers

  • Modbus ASCII
  • Modbus Ethernet
  • Modbus Plus
  • Modbus Serial
  • Modbus Unsolicited Serial

Supported Devices and Networks

  • TCP/IP Ethernet (Master/Slave)
  • RS-232 and RS-485 Serial (Master/Slave)
  • Modicon
  • Enron
  • Omni
  • Daniel
  • Instromet
  • Dynamic Fluid Meters
  • Roxar RFM
  • Mailbox
  • Elliot
  • Fluenta FGM

Note: Unlisted devices may also be supported; please contact Kepware.

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