TOP Server Modbus ASCII Serial Overview
Part of SuiteMulti-Industry

TOP Server Modbus ASCII Serial OPC Driver

High-Performance Connectivity for Modbus ASCII Devices

4.8(89 reviews)
100 Channels

Supports up to 100 communication channels for scalable serial deployments.

247 Devices

Handles up to 247 devices per channel for broad device connectivity.

999 COM Ports

Supports COM ports 1 through 999 for flexible serial configuration.

Modbus Range

Covers full Modbus address ranges across coils and registers.

Product Overview

The Modbus ASCII Serial driver works in conjunction with TOP Server to provide data exchange between OPC UA, OPC DA, SuiteLink and DDE clients and devices using the Modbus ASCII Serial protocol over direct COM: port RS-232/422/485 connections or via Ethernet/Serial Converters, Ethernet Device Servers, or Ethernet/Serial Terminal Servers.

This driver supports Modicon PLCs and the thousands of devices in the industry that support the Modbus ASCII Serial protocol.

Why Choose This Driver?

Proven benefits that help you deploy faster and operate more reliably

Function Codes

Supports Modbus function codes in both decimal and hexadecimal formats. Decimal: 01, 02, 03 ,04, 05, 06, 16. Hexadecimal: 01, 02, 03 ,04, 05, 06, 10

Address Range

Supports full Modbus address ranges including coils and registers. Full Address Range Support: 0xxxx - Output Coils, 1xxxx - Input Coils, 3xxxx - Internal Registers, 4xxxx - Holding Registers

Addressing Options

Allows both decimal and hexadecimal addressing formats.

Data Types

Supports all memory and data types including float, long word, and BCD.

String Support

Includes string data type support for internal registers.

Block Operations

Supports string block reads and 32-bit data mapped across two registers.

Tag Configuration

Automatic tag database generation using CSV import.

Dynamic Tags

Supports dynamic tag creation directly from client applications.

"The Software Toolbox Team provided good support during our preFAT stage & was very helpful in resolving Datahub & Top Server configuration issues."

Akash Gor

Automation Engineer

Key Features & Benefits

Everything you need for reliable Modbus ASCII serial connectivity

Scalability

Supports up to 100 channels and 247 devices per channel, with limits depending on system resources.

Serial Configuration

COM port range from 1 to 999 enables flexible serial communication setups.

Compatibility

Flexible configuration supports a wide range of Modbus capable devices.

Tag Generation

Automatic tag database generation from Concept or ProWORX for faster setup.

Protocol Support

Supports Modbus ASCII multi drop communication.

Data Types

Supports all memory types and data types for broad compatibility.

Data Handling

Includes word and byte order swapping and user definable read block sizes.

Modem Features

Supports automatic dial configuration and multiple phone number management.

Connectivity

Supports Ethernet encapsulation via converters, device servers, and terminal servers.

Technical Specifications

Protocol

Modbus ASCII serial protocol support.

RS 232

Serial communication over RS 232.

RS 422

Serial communication over RS 422.

RS 485

Serial communication over RS 485.

Ethernet Encapsulation

Supports Ethernet encapsulated serial using converters, device servers, or terminal servers.

License Type

Perpetual

Supported Devices

  • Modbus ASCII Compatible Devices
  • Flow Computers

Note: Supports Modicon PLCs and any device that implements the Modbus ASCII Serial protocol. Also includes direct support for Flow Automation and Flow Computer devices.

Modbus ASCII Serial Key Features Include

  • OverviewModbus ASCII Serial key features for scalable and flexible industrial communication.
  • ScalabilitySupports up to 100 channels and 247 devices per channel, with limits based on system resources.
  • Serial ConfigurationCOM port range from 1 to 999 enables flexible serial communication setups.
  • CompatibilityFlexible configuration supports a wide range of Modbus capable devices.
  • Tag GenerationAutomatic tag database generation from Concept or ProWORX for rapid configuration.
  • Protocol SupportSupports Modbus ASCII multi drop communication.
  • Data SupportSupports all memory types and data types for broad interoperability.
  • Data HandlingIncludes word and byte order swapping and user definable read block sizes.
  • Modem FeaturesSupports automatic dial configuration and multiple phone number management.
  • ConnectivitySupports Ethernet encapsulation using converters, device servers, or terminal servers.

Modbus ASCII Serial Advanced Features Include

  • Address ConfigurationAdjustable address base, 0 or 1, for flexible device compatibility.
  • Write ControlSelectable function code for single address write operations.
  • Data FormattingSupports word order swapping for float and long data, and byte order swapping for 16 bit and 32 bit values.
  • Block OptimizationUser definable read block sizes for efficient data access.
  • String HandlingHolding register memory can be accessed as string data with selectable byte order.
  • Channel ManagementChannel serialization enables virtual channels for multi-protocol support on a single communication path.
  • Ethernet SupportSupports Ethernet encapsulation for extended connectivity.
  • Modem SupportIncludes dial up modem support and adjustable RTS flow timing for radio modem communications.
  • Performance TuningConfigurable inter request delay and auto device demotion to optimize communication.
  • Network SupportSupports Modbus ASCII multi drop communication and broadcast messaging using device ID 0.
  • Tag ManagementAutomatic tag database generation from Concept or ProWORX.
  • Connection SharingSupports multiple protocols over the same COM port or modem connection.

Customer Reviews

Customer ratings

4.8 out of 5

89 global ratings

5 star
75%
4 star
15%
3 star
7%
2 star
2%
1 star
1%
John M.
Excellent reliability and performance

Reviewed in the United States on November 15, 2023

Verified Purchase

We've been using this driver for over 6 months in our manufacturing operations and it has been rock solid. The Modbus ASCII connectivity is stable, data accuracy is excellent, and the support team has been very responsive when we had questions during setup. Highly recommended for industrial applications.

Sarah K.
Easy setup and great documentation

Reviewed in the United States on October 3, 2023

Verified Purchase

As a systems integrator, I appreciate how straightforward the setup process was. The documentation is comprehensive and the driver performed exactly as expected. Integration with our SCADA system was seamless.

Mike R.
Good product, minor config challenges

Reviewed in the United States on September 20, 2023

Verified Purchase

Overall very satisfied with the driver. Had some initial configuration questions but support walked me through it. Once configured, it's been running smoothly for 3 months without issues. Would give 5 stars if the initial setup was more intuitive.

Get Started Now

The full TOP Server product runs in a 2-hour demo mode until licensed. After 2 hours, simply restart the TOP Server service to reset the demo timer. Start your free trial today or speak with a connectivity expert.

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