ESP32 Modbus Communication via RS485 Module Overview This project provides an implementation of Modbus communication using an ESP32 microcontroller and an RS485 module. Modbus is a widely used ...

Arduino ModBus RTU Slave library using RS485 This library was created to make it easier to create communication between devices using ModBus RTU protocol, based on RS485 wiring. As it state in the ...

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Modbus TCP创新性地引入MBAP报头，通过7字节的头部（事务标识符、协议标识符、长度、单元标识符）实现多客户端并发访问。 某汽车生产线改造项目中，TCP协议成功支持15个HMI设备同时访问PLC数据，而传统RTU网络受限于RS485总线拓扑，最多仅能连接32个节点。