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Understanding Modbus

Understanding Modbus

The interactive companion course, with the book as a PDF

20 lessons · about 8 hours · Beginner to intermediate

Free for Pro Library members. Free Readers pay $26.10. Sign in or join free.

Enrolling includes the book as a PDF download.

Modbus is still the common language of meters, drives, PLCs and SCADA systems. This course follows the book Understanding Modbus chapter by chapter and shows every idea moving on the wire.

Each of the 19 chapters has animated figures you can play and pause, hands-on tools you use right in the browser, and a short check at the end.

  • Build RTU, ASCII and TCP frames byte by byte, with live CRC and LRC
  • Decode registers: signed values, scaling, 32-bit integers, floats, word order
  • Run the pump-station monitoring project in your browser before you build it in Python
  • Troubleshoot with the three outcomes: data, exception, or silence
  • Python and pymodbus code for a Raspberry Pi or any Linux machine

Includes the complete book as a PDF download.

Part I is free to preview.

Curriculum

Goes with