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Modbus & 1-Wire
Two field protocols beyond the big three: Modbus (industrial register access over RS-485/TCP, master/slave with CRC) and 1-Wire (a single line carrying power and data to addressable sensors).
22 min read
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What is Modbus and what's its data model?What are the common pitfalls when reading Modbus registers?How does 1-Wire send both power and data on a single line?How are 1-Wire devices addressed, and how do you find them all on a bus?Why is 1-Wire timing tricky on a microcontroller, and how do you handle it?
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