说明：  HOLLYSYS（和利时）MACSV的DCS系统编程文档 是和利时公司第五代DCS系统，我公司目前采用此系统且三年来运行良好！！（此文档为第一本）
(HOLLYSYS (and Hollysys) MACSV programming of the DCS system and the document is the fifth generation of the company profits when the DCS system, our company is currently using this system over the past three years and running good! ! (This document is for the first))