[导读]在老旧产线改造中，常有大量RS485 Modbus RTU设备（温湿度、电表、变频器）需要接入上位机或MES，但它们不支持TCP。此时用Raspberry Pi（树莓派）运行Modbus TCP↔RTU网关程序，既能做协议转换，又能充当边缘数据预处理节点。本文基于Raspberry Pi OS + pymodbus库，给 ...

This is one of those hacks that makes you stop in your tracks and say, “wait, you can do that!?” — before realizing, oh, yes, of course you can do that. With enough computational power, you can do a ...

Stop Paying for Google Drive. I Built My Own Home Storage Cloud Using a Raspberry Pi Hate paying for cloud storage, but not ready to invest in a network-attached storage device? Here's how I turned my ...

The `PI_*` located-coil and located-register surface is the **stable external integration layer** for the Pi sidecar, OpenPLC Runtime's `Monitoring` view, and any future service tools. Treat it as an ...

在工业自动化领域，Modbus是应用最广泛的通用通信协议，相当于工厂设备的“通用语言”，解决了早期设备通信格式杂乱、无法互通的难题。 很多从业者常混淆Modbus RTU与Modbus TCP，甚至误以为TCP是RTU的升级替代版本。实则二者核心通信规则一致，只是传输载体 ...

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While building a simpler model for particle interactions, physicists found a new representation involving pi—not a new value for pi, and not a replacement for the one you learned in school.

When integrating a vendor-specific controller, field device, or protocol client on the Pi/sidecar side: - Prefer a small adapter boundary over hardwiring vendor logic into orchestration code. - The ...

The circumference of a circle is the distance around the shape. The ability to round a number to a number of decimal places or to a number of significant figures means that answers can be written to ...