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    鋼管測量點控制系統(tǒng)的設(shè)計與實現(xiàn)

    Design and Realization of Control System for Measurement Points of Steel Pipe Operation Line

    • 摘要: 鋼管精整線測量點設(shè)備操作和數(shù)據(jù)采集通常用工廠可視化軟件實現(xiàn),但是現(xiàn)有的測量點控制軟件多采用“事件驅(qū)動”方式編程,這種方式要求現(xiàn)場檢測信號必須準(zhǔn)確?？梢岳霉S可視化軟件中常見的時間循環(huán)程序,構(gòu)建一個主控循環(huán),實現(xiàn)一種“狀態(tài)驅(qū)動”的編程方法。由于主控循環(huán)采用“先讀取,后執(zhí)行”的方式使用現(xiàn)場信號,因此用這種方法編寫的控制程序顯著地增強(qiáng)了對現(xiàn)場信號的容錯能力,并且程序本身能實現(xiàn)現(xiàn)場信號的全面監(jiān)控。

       

      Abstract: Normally the equipment operation and data acquisition of measurement points of the steel pipe finishing line are realized via some visual software. However currently-used control software for the measurement point is in most cases programmed with the event drive technique, which requires that the site measurement signals must be accurate. The time circulating program, a common industrial visual software may be used to build up a main control circulation to obtain a "status drive" programming method. Since the site signals are used in a "first fetch, then execute"mode in the main control circulation, the site-signal fault-tolerant capacity of the control program as made with the said programming method is significantly enhanced, and moreover the program itself is able to realize the overall monitoring of the site signals.

       

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