Honeywell UDC Serial

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Product Overview

The Honeywell UDC Serial device driver works in conjunction with KEPServerEX to provide data exchange between OPC clients and Honeywell UDC controllers using modbus RTU protocol. KEPServerEX automatically optimizes your data acquisition based on client demand. Data integrity is ensured with our extensive error handling.



  • Supports Ethernet Encapsulation
  • Multi-drop Supported
  • Full Address Range Support ( 0 - 65535 )
  • Hex Addressing Support (0-FFFF)
  • User Definable Read Block Sizes
  • Adjustable Address Base ( 0 or 1 )
  • Word Order Swapping for Floating Point and Longs
  • Adjustable RTS Flow timing for Radio Modems
  • Supports all memory types and data types including Loop Configuration Memory
  • RTU Functions: 01, 02, 03, 04, 05, 06, 16, 20, 21
  • Modem Support
    • Automatic Dial Configuration
    • Multiple Phone Number Management


  • Honeywell UDC Modbus

Supported Devices

  • Honeywell UDC 3000
  • Honeywell UDC 3300 (MODB3K mode)

Available Languages

  • English

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

Release Notes


  • Fixed an issue wherein the driver did not properly reject a response from a Device ID that was different than was sent in the request packet.