https://support.industry.siemens.com/cs/document/98957840/%E5%88%9B%E5%BB%BA%E7%94%A8%E4%BA%8E%E5%BC%80%E6%94%BE%E5%BC%8F-tcp-ip-%E9%80%9A%E4%BF%A1%E7%9A%84%E8%BF%9E%E6%8E%A5%E6%95%B0%E6%8D%AE%E7%9A%84%E5%90%91%E5%AF%BC-(%E5%BC%80%E6%94%BE%E5%BC%8F%E9%80%9A%E4%BF%A1%E5%90%91%E5%AF%BC)?dti=0&lc=zh-CN

之前用过cp340与设备进行485通讯的，组态和地址什么都要写对，通讯方式也要用对