知识与财富的链接
主要介绍了75MN铝挤压机机后区生产线的PLC网络系统及其设备工艺，并重点讨论了系统的组成、特点、功能及程序设计方法。
This paper mainly introduces back section of 75MN aluminium extrusion press production line PLC network system and processing equipments and discusses their composition,features,functions and program design.
