自己写的西门子200程序，已经测试过了，可通过程序修改设定值，P,I，D(The Siemens 200 program I wrote has been tested and can be modified by program, P, I, D)

这是西门子200PLC与wincc通讯的数据神港温控器程序结合使用(This is Siemens 200PLC and wincc communication data god harbor temperature controller program combined use)