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 ...

简单来说，Modbus调试软件就是串口助手，或网络调试助手，只不过增加了协议分析，CRC计算报文帧拼接的功能。 上一篇文章介绍了Modbus协议，物理层和协议层，主要包括3种模式：Modbus-RTU、Modbus-ASCII和Modbus-TCP。前两种是基于串口的，后一种是基于TCP网口的。

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 ...

Industrial hardware needs to be reliable, tough, and interoperable. For this reason, there are a series of standards used for command & control connections between equipment. One of the more ...

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...