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knot-modbus-simulator

KNoT Modbus Simulator is part of the KNoT project. It aims to provide an industry protocol simulator by creating a tcp server instance so that KNoT Things can be described and tested by KNoT ecosystem. At this moment, the supported industrial protocols are:

  • Modbus

Dependencies

Build:

  • python3 or higher
  • pyserial v3.1
  • modbus-tk v1.1.1

How to install dependencies:

  • Install with pip: sudo pip3 install -r requirements.txt

Configure the simulator

The simulator provides an easy configuration template (config/config.json). In order to create a data server model of industrial things you need to follow the config template, where the fields are explained bellow:

  • id: Specifies the data-server id to be modeled, id > 0.
  • register_data: Represents a non-discrete (non-binary) data-block.
    • Each register_data has the following fields:
      • address: Identifies data inside the data-block related to non-discrete block.
      • value: List of values with little-endian representation in Hexa-decimal.
  • digital_data: Represents a discrete (binary) data-block.
    • Each digital_data has the following fields:
      • address: Identifies data inside the data-block related to discrete block.
      • value: List of values with little-endian representation in binary.

Running the Simulator

  • Running the simulator with template config: sudo python3 main.py

  • Running a simulator with a custom config file: sudo python3 main.py -c <config_file>.json

License

All KNoT Simulator files are under LGPL v2.1 license, you can check COPYING file for details.