The Bidirectional RS-485 Fan-Out Hub Reference Design (TIDA-01365) documents and tests an RS-485 fan-out hub design where 1:N and N:1 RS-485 signals are aggregated in and out of any bus topology. This design also features automatic direction control, for reduced pin count on microcontrollers, and a DC-to-DC converter using the 24V DC rail typically seen in industrial applications.
Features
- Allows for bidirectional communication over complex network topologies
- One master node / Four slave nodes
- Direction of data automatically controlled (no MCU needed)
- Supports cable lengths > 1000 m