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Modbus ASCII

The Modbus ASCII driver for Kepware Server provides an easy and reliable way to connect to Modbus ASCII compliant PLCs and other devices to OPC client applications.

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Available in these suites

This product is only available as part of a suite. Choose one of the options below to get access to this and other tools.
  • Enterprise Connectivity

    Kepware+

    Get all of the Kepware Server connectivity in one package - designed for enterprises looking to standardize and manage their connectivity at scale.

    Suite Kepware
  • Project Connectivity

    Advanced Manufacturing Suite

    Kepware’s Advanced Manufacturing Suite bundles every driver with tag linking and database logging unlocked data from any device for automation projects.

    Suite Kepware
  • Device Connectivity

    Modbus Suite

    Kepware's Modbus Suite works with the Kepware Server communications platform to provide OPC Data Access (OPC DA) to Modbus-compatible devices.

    Suite Kepware

Details

Overview

Modbus ASCII Product Overview

The Modbus ASCII driver provides an easy and reliable way to connect to Modbus ASCII compliant PLCs and other devices to your OPC client applications, including HMI, SCADA, Historian, MES, ERP, and countless custom applications.

Performance

  • Ethernet Encapsulation
  • Modbus ASCII Multi-drop Supported
  • Full Address Range Support (0 - 65535)
  • User Definable Read Block Sizes
  • Adjustable Address Base (0 or 1)
  • Word Order Swapping for Floating Point and Longs
  • RTU Functions used: 01, 02, 03, 04, 05, 06, 16
  • Direct Support of Flow Automation flow computers
  • All memory types and data types supported
  • Modem Support
    • Automatic Dial Configuration
    • Multiple Phone Number Management
  • Communication Serialization

Protocols

  • Modbus ASCII

Supported Devices

  • Any Device Supporting Modbus ASCII
  • Any Modbus ASCII Compliant PLC
  • Flow Computers

Available Languages

  • English
  • German
  • Japanese
  • Simplified Chinese

Application Support

  • DDE Format CF_Text and AdvancedDDE
  • NIO Interface for iFIX
  • OPC .NET Service (OPC .NET) Version 1.00
  • OPC Alarms and Events (OPC AE) Version 1.10
  • OPC Data Access (OPC DA) Versions 1.0a, 2.0, 2.05a, and 3.0
  • OPC Unified Architecture (OPC UA) Clients
  • SuiteLink and FastDDE for Wonderware

Documents

Release Notes

Access and search all Kepware product release notes here.

Featured Suites

Also consider

Kepware+

Get all Kepware Server connectivity in one package, built for enterprises seeking to standardize and manage connectivity at scale.

Kepware Server Free Trial

Explore all Kepware Server capabilities for free and experience secure, reliable industrial connectivity before committing to purchase.