解压后，源码为“modbus_server_tcp.c”，它模拟一个Modbus TCP传感器。源码的讲解请参考《11.7 Modbus TCP编程与实验》。 当前台程序、MQTT程序使用RPC接口读写Modbus TCP传感器时，后台程序（控制中心）发出的Modbus TCP请求将到达“modbus_server_tcp”。 Yocto项目（YP）是一个 ...

校验码：校验码通常是一组数字的最后一位，由前面的数字通过某种运算得出,用以检验该组数据的正确性。代码作为数据在向计算机或其它设备进行输入时，容易产生输入错误，为了减少这种输入错误，编码专家发明了各种校验检错方法，并依据这些方法设置了 ...

Modbus TCP connections pose many benefits over RTU RS-485 alternatives. Image: PV Tech. In the last couple of years, the market has seen a few commercial and industrial (C&I) inverter models and ...

A Modbus TCP/IP driver has been added to Ignition OPC-UA, a cross-platform OPC-UA server. {mosimage} The new driver allows Ignition OPC-UA to connect to a broad variety of devices, such as solar cells ...

Modbus is a well known protocol used for instance fo industrial, or home automation tasks. It may run on physical layers such as serial (RS232, or RS485) or ethernet (TCP, or UDP). In order to test ...