Driver Details






TOP Server Allen-Bradley (AB) OPC & I/O Server

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Allen-Bradley DF1 Driver Details

This driver is a member of the TOP Server Allen-Bradley Suite OPC Server.  When you download or purchase the Allen-Bradley Suite, this driver is included along with all the TOP Server built-in features. This driver provides connectivity to PLC 5, SLC & MicroLogix devices via Allen-Bradley DF1 protocol

TOP Server OPC Certified


Allen-Bradley DF1 ConnectivityProtocols Supported:

  • Allen-Bradley DF1 Full-Duplex Protocol
  • Allen-Bradley DF1 Half-Duplex Protocol
  • Allen-Bradley DF1 Radio Modem Protocol (Point-to-Point or Multi-Drop)

Devices Supported - Click Here

Physical Networks Supported:

  • RS-232 Serial Point-to-Point (Full-Duplex)
  • RS-422/485 Multi-Drop (Half-Duplex)
  • Serial Radio Modem (Half-Duplex or Radio Modem Protocol)
  • DH+ (via KF2 Module - DF1-to-DH+ Converter)
  • DH+ (via USB DF1-to-DH+ Converter 1784-U2DHP)
  • DH-485 (via KF3 Module - DF1-to-DH-485 Converter)
  • Ethernet Encapsulated Serial (Details)

Note:  Does NOT require RSLinx! Click to Access AB DF1 Help File

Maximum Number of Channels & Devices Supported:

  • Channels - 100
  • Devices - 256 per Channel
  • COM Port Range - 1 to 256

Standard Features:

  • Open Address Range Support for Compatibility with all PLC 5, SLC 5/05 and MicroLogix controllers
  • Array Addressing Support
  • Supports all File Types (Output/Input/Integer/Etc. - For Full Addressing List, please refer to Driver Help File)
  • Supports data types such as Float, Long Word, and BCD (File Type Dependant)
    • MicroLogix/SLC Models:  Supports Float Access to Integer (N) Files
  • Configurable Error Checking (CRC or BCC)
  • See CSV Import to build your tag configuration quickly
  • Tag configuration supports dynamic tags from your client application


Advanced Driver Features:

  • User Definable Request Size
  • Configurable Inter-request delay
  • Adjustable RTS Flow timing for Radio Modem communications
  • Special Radio Modem protocol support designed for optimal throughput when using Radio Modems
  • Ethernet Encapsulation
  • Dial-Up Modem Support
  • Configurable Slave Re-Poll Delay for improved Half-Duplex communications with slow devices
  • Specify a Network Interface Card at the channel level, when using Ethernet Encapsulation (Details)
  • SLC I/O Slot Configuration for Accessing Modular I/O with extensive list of pre-defined I/O Modules to choose from or use the Generic module for the ultimate flexibility.
  • Advanced Function Block Support for MicroLogix.
    • Set the Real Time Clock in MicroLogix models with the optional RTC installed
    • High Speed Counter (HSC) file
    • Channel 0 Communications Status file (CS0)
    • I/O Module Status File (IOS)



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