本来这期是想写有关PLC和PAC还有混合型DCS到底哪种系统好,其实这也是应一些控友询问而写。但是就在落笔之前,正好出国到法国彩虹PCvue的总部巴黎塞夫勒市,很巧碰到了PLC的鼻祖morley,我和他探讨了有关上面的那 Originally this period is to write about PLC and PAC and hybrid DCS in the end what kind of system is good, in fact, this should be some control queries and write. However, just before leaving, just to go abroad to the French Rainbow PCvue’s headquarters in Sèvres, Paris, coincidentally met the founder of PLC morley, I discussed with him that the above