ESP32 Volume 8 - circuitlabs.net

RS-422 Full-Duplex Communication

Implement RS-422 full-duplex serial communication with ESP32 for point-to-point or multi-drop industrial applications requiring higher data rates.

Interface ESP32 with RS-485 transceivers for robust, long-distance serial communication in noisy industrial environments. Handle half-duplex.

Build a Modbus Gateway using ESP32 to bridge Modbus RTU (serial) networks with Modbus TCP/IP (Ethernet/WiFi) networks seamlessly.

Implement Modbus TCP/IP on ESP32 for communication over Ethernet or WiFi. Encapsulate Modbus frames within TCP packets for IP networks.

Configure ESP32 as a Modbus RTU Slave device. Respond to master requests, manage data registers, and emulate industrial sensors/actuators.

Implement a Modbus RTU Master on ESP32 to poll slave devices, read registers, and write coils for industrial control and monitoring.

Learn Modbus RTU basics for ESP32. Understand serial communication, master-slave architecture, and data models for industrial devices.