Cutler-Hammer D50/D300

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Product Overview

The Cutler-Hammer device driver works in conjunction with KEPServerEX to provide data exchange between OPC clients and Cutler-Hammer D50/D300 compliant PLCs. KEPServerEX automatically optimizes your data acquisition based on client demand. Data integrity is ensured with our extensive error handling.



  • Supports Ethernet Encapsulation
  • Supports Multi-drop using RS485
  • Memory Types Supported: M, K, F, R, W, PV, SV, TC, SR, L
  • Modem Support
    • Automatic Dial Configuration
    • Multiple Phone Number Management


  • Cutler-Hammer Hex Mode Protocol

Supported Devices

  • D300 Programmable Controller
  • D50 Programmable Controller

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



  • Corrected an issue where the driver would produce a syntax error during tag validation if the data type was not supported. Some clients add items with a set data type regardless of the address. The driver now responds with bad type, allowing the driver library to validate again with the default type.