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    Modbus Stack

    Enabled over millions of devices from field instruments, industrial gateways to “next-gen” water heaters

    Overview

    Modbus RTU (Remote Terminal Unit) and TCP (Transmission Control Protocol) is an open, serial protocol derived from the Master/Slave architecture. Modbus is primarily used within Building Management Systems (BMS) and Industrial Automation Systems (IAS). It is widely accepted due to its ease of use and reliability.

    Solution

    Softdel’s Modbus master and slave stack enables faster firmware development of Modbus-enabled field devices. The stack supports OEMs who wish to add Modbus functionality to existing devices.

    Value-added services include porting of Modbus stack to device platforms, integration with device applications and complete product testing.

    Key Features

    • Developed in ‘C’ language and can be ported to any microcontroller platform

    • Ideal for non-RTOS and can be ported to any RTOS platforms

    • Supports all major Modbus functions, diagnostic functions and exception functions

    • Tested with Modbus testing tools; Wingpath, Modbus Poll and Modbus Slave

    • Tested with all major baud rates (9600, 19200, 38400, 57600 and 115200) and with all parity settings

     


    • Implementation as per Modbus specification documents, Modbus_Application_Protocol_V1_1b3, Modbus_over_serial_line_V1_02

    • Memory footprint –
    • Master stack: RAM 3.64 KB, ROM 6.052 KB
    • Slave stack: RAM 3.5 KB, ROM 11.85 KB

    Benefits

    Efficiency

    Readily deployable Modbus RTU Master and Slave Stack, available royalty-free

    Compatibility

    Developed in C language and can be ported to any microcontroller platform

    Speed

    Enables faster firmware development of Modbus-enabled field devices

    Support

    Supports all major Modbus functions, diagnostic functions and exception functions

    CASE STUDY // Modbus Stack

    Modbus Interface for a BTU Meter (Energy Meter)

    Client : Leading manufacturer of the ultrasonic, vortex, differential pressure & turbine flow meters and BTU meters

    Modbus Interface for a Water Heater Controller

    Client : Leading US based manufacturer of Water Heaters and Boilers

    Talk to our Technical Experts

    Our technical experts will be happy to address your needs