RS-485 is the chosen physical layer standard for numerous industrial communication systems, such as PROFIBUS systems, or for connecting devices like PLCs, SCADA systems, RTUs, or MODBUS systems.

Ratified in the early 80's as a new balanced transmission standard, RS-485 has emerged as the industry's seemingly eternal interface workhorse. Much literature has been written on the subject since, ...

The RS-485 standard defines a popular and widely used serial data interface and network that’s been in use for over 30 years. It’s found in factories, process control plants, building automation, and ...

Dozens of serial data interfaces are used today. Most have been developed for specific applications. A few have become universal, such as I 2 C, CAN, LIN, SPI, Flex, MOST, and I 2 S. Then there’s ...