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DIT07M9-SP Foundations of Modbus

  • Duration:
  • Investment: US$ 129.00

Must complete all lessons




Modbus is a serial communication which enables communication among many devices connected to the same network. It is an open protocol, hence has become a standard communications protocol in industry. It is used widely by many vendors throughout many industries. Modbus protocol applies the master–slave principle even though the network communication method is peer–to–peer.
This course is designed to provide a complete outlook on ModBus protocol.
After completion of this course, students can improve their knowledge towards ModBus by knowing ModBus protocol, different modes of Modbus, ModBus TCP/IP protocol, ModBus TCP and packet sniffing.



  • Networking Technicians
  • Systems Engineers
  • Computer science & Networking Engineers
  • IT Engineers
  • Process Engineers




  • Open protocol
  • Modbus Serial
  • OSI layer implementation
  • Master-slave interaction
  • Modbus Serial Application Data Unit (ADU)
  • Application layer
  • Read holding registers
  • Read input registers
  • Loopback test



  • RTU Mode
  • ASCII Mode
  • ASCII Table
  • ModBus exception responses
  • Modbus troubleshooting 



  • Modbus Transaction
  • Modbus/TCP communication stack
  • Modbus encapsulation
  • Modbus/TCP ADU
  • Modbus ADU over TCP/IP & Ethernet
  • Modbus messaging service architecture
  • Modbus/TCP client server interaction
  • Mixing Modbus/TCP & Modbus serial components
  • Gateways & troubleshooting



  • Demo 
  • RTFM Schneider meter
  • RTFM OSI soft interface



Plan Name Investment
Unlimited Access for 2 Years: US$ 129.00


Brian Hobby

BE (Electrical and Electronic) Auckland University

Brian has 20 plus years of engineering experience. He thinks in systems and the connections between them as a result of his time as a Naval Weapons Electrical Engineering Officer.

As a design, commissioning and project engineer with Rio Tinto Alcan he oversaw the first application of devicenet in an aluminium smelting environment and assisted with piloting fully automated anode changing.

More recently he has been involved with collecting data from process using the OSISoft historian and using their toolset for analysis.  His experience with networking goes back to becoming the accidental sysadmin for a Novell Netware system in the early 1990’s and has been a part of his roles ever since.

He is now ISA99 qualified and currently works for Griffith University as a Technical Lead (IT and Engineering) where he is assisting in collecting and analysing data in support of their sustainability initiatives.


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