Modbus是施耐德电气于1979年为使用PLC通信而发表的一种串行通信协议。 现在它已经成为工业领域通信协议的业界标准，并且是工业电子设备之间常用的连接方式。Modbus被广泛使用的原因主要有三个： Modbus通信协议作用在OSI模型的物理层（1层）、数据链路层（2层 ...

[导读] 大家好，我是逸珺，前面总结了一下RS-485的一些要点，今天来总结一下Modbus-RTU协议，原本想把实现思路也一起发出来，但是感觉太长了，就拆开了。 前世今生 照例简单说下这个协议的历时，Modicon公司于1979年制定了Modbus协议标准，并用在其PLC产品上。

Continuing its Industrial IoT (IIoT) theme – following the release of the Arduino PLC IDE – Arduino has announced the Arduino Opta, which it describes as an “easy-to-use micro PLC with Industrial IoT ...

While the Arduino organisation has been making industrial single-board computers for a while, it has finally taken the plunge and produced a complete industrial product – and industrial controller ...

“Secure and durable by design, it supports OTA firmware updates and ensures data security from the hardware to the Cloud thanks to the onboard secure element and X.509 Standard compliance. All while ...

Welcome to my quick review of an inexpensive 2-channel 5V relay module controlled via RS485 bus utilizing Modbus RTU protocol. As claimed by some online sellers, this easy-to-get Modbus RTU 2-Channel ...

At the core of the Arduino PLC Starter Kit lies the Arduino Opta mini PLC, a state-of-the-art microcontroller that serves as the brain of your automation projects. This powerful device boasts seamless ...