Contrex Serial

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Product Overview

The Contrex Serial device driver works in conjunction with KEPServerEX to provide data exchange between OPC clients and Contrex CX1000 motion controllers. KEPServerEX automatically optimizes your data acquisition based on client demand. Data integrity is ensured with our extensive error handling.



  • Multi-drop RS-485 communications
  • Supports Ethernet Encapsulation
  • MP-Monitor Parameters
  • CP-Control Parameters
  • EU-Custom Engineering Units
  • CL-Control Commands
  • CT-Constant Data Table
  • Constant Data Supported
  • Field Length
  • Control Commands Supported
  • Modem Support
    • Automatic Dial Configuration
    • Multiple Phone Number Management


  • CX-Series Serial Communications Binary Data-Link Protocol

Supported Devices

  • CX-1000 series - using Binary Data-Link Protocol

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 with broadcast mode (Device ID of 0) wherein Write tags were not being released properly.

What Is a Driver?

KEPServerEX is more than an OPC server—it's a connectivity platform for industrial automation and IoT. Simply download KEPServerEX, and then select from Kepware's library of more than 150 device drivers, client drivers, and advanced plug-ins to fit the communication requirements unique to your industrial control system.

A driver is a software component that enables KEPServerEX to meet the connectivity requirements of a specific device, system, or other data source. The driver handles all proprietary communications to the data source for KEPServerEX; the client interfaces handle all supported OPC, proprietary, and open standards connectivity to applications that monitor or control the devices.

Drivers may be licensed individually or in suites. Additional drivers can be licensed on demand as connectivity needs evolve.