西门子S7200 串口通讯样例，用于modbusrtu协议编程参考-Siemens S7200 sample serial communication, protocol programming reference for modbusrtu

一个西门子与plc通讯的实例，很好理解的一个东西，希望对你有帮助。-Two pilots have been suspended after a plane carrying 280 passengers plunged suddenly in the airspace over Turkey. Air regulators in India have set up an investigation into the “serious...suddenly in the airspace ove