SKU: DFR0824
The Raspberry Pi Dual-Channel RS-485 Expansion Board offers enhanced data transmission reliability and protection for the Raspberry Pi mainboard with isolated transceivers and embedded protection circuits, including lightning and surge protection.
1. Getting Started with Python Setup
This article provides a detailed guide on setting up a Python environment, installing essential libraries, and configuring UART on Raspberry Pi devices. It includes specific commands and steps for various Python versions and Raspberry Pi models, ensuring a smooth setup process.
2. Usage Example: Raspberry Pi RS-485 HAT Modbus Communication
The article demonstrates how to use a dual-channel RS-485 expansion HAT with Raspberry Pi for Modbus communication, detailing configuration steps, code modifications, and sensor data retrieval.
Reference
This article provides an in-depth look at RS-485 and ModBus communication protocols, focusing on RS-485's long transmission distance, noise rejection, and differential transmission method, and ModBus's master/slave architecture, addressing structure, and command execution in industrial applications.
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