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Driver Details

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TOP Server Modbus Suite OPC & I/O Server
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Modbus ASCII Master Driver Details

This driver is a member of the TOP Server Modbus Suite OPC Server.  When you download or purchase the Modbus Suite, this driver is included along with all the TOP Server built-in features. This driver provides connectivity to devices supporting Modbus ASCII Serial protocol over RS-232/422/485 connections. This includes Modicon PLCs and the thousands of other devices in the industry that support the Modbus ASCII Serial protocol.

TOP Server OPC Certified

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Modbus ASCII ConnectivityProtocols Supported:

  • Modbus ASCII Serial Protocol

Devices Supported - Click Here

Physical Networks Supported:

  • Serial RS-232
  • Serial RS-422
  • Serial RS-485
  • Ethernet Encapsulated Serial (Details)

Click to Access Modbus ASCII Help File

Maximum Number of Channels & Devices Supported:

  • Channels - 100
  • Devices - 247
  • COM Port Range - 1 to 256

Modbus Function Codes Supported:

  • Decimal - 01, 02, 03, 04, 05, 06, 16
  • Hexadecimal -  01, 02, 03, 04, 05, 06, 10
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Standard Modbus Features
  • Full Address Range Support: (Application Note)
    • Output Coils:  000001 - 065536
    • Input Coils:  100001 - 165536
    • Internal Registers:  300001 - 365536
    • Holding Registers:  400001 - 465536
  • Decimal or Hex Addressing Support
  • String Block Read Support
  • Supports all memory types and data types such as Float, Long Word, and BCD
  • String Data Type support for Internal Registers
  • Base Modbus device model supports 32-Bit Data Types as Two Registers
  • See CSV Import to build your tag configuration quickly
  • Tag configuration supports dynamic tags from your client application
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Modbus ASCII Configurable Settings

Advanced Driver Features:

  • Adjustable Address Base ( 0 or 1 )
  • Selectable Function Code for Single Address Writes
  • Word Order Swapping for Float and Long Data Types
  • Byte Order Swapping on all 16 bit and 32 bit values
  • User Definable Read Block Sizes
  • Holding register memory as string data (HiLo or LoHi byte order)
  • Ethernet Encapsulation
  • Dial-Up Modem Support
  • Adjustable RTS Flow timing for Radio Modem communications
  • Configurable Inter-request delay
  • Modbus ASCII Multi-Drop Serial Communications
  • Auto Device Demotion
  • Supports Broadcast Messages using DEVICE ID 0
  • Automatic Tag Database Generation (from Concept or ProWORX)

 
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