各厂商PLC-DCS数据采集通信

1、西门子PLC

2、横河DCS

3、Allen-Bradley（AB PLC）

参考：
https://blog.csdn.net/Cy52020/article/details/134850220
https://blog.csdn.net/Cy52020/article/details/134861408
https://blog.csdn.net/Cy52020/article/details/134980126
https://blog.51cto.com/u_16213701/12680570
https://docs.pingcode.com/ask/173971.html
https://www.informat.cn/qa/277317
https://pypi.com.cn/project/pycomm3/
https://blog.csdn.net/gitblog_00403/article/details/141240678