描述
FX2n-4AD,FX2n-4AD-PT 等模塊在第一次使用時,要根據(jù)被測工程量范圍、濾波常數(shù)等初始設置;pH ,DO 等電極在正式使用前要標定,f(x)=ax+b, 用標準緩沖液定出a、b 使用雙字節(jié)浮點運算指令FLT, BCD, DEADD, DESUB, DEMUL, DED等。
3)數(shù)據(jù)的存儲
PLC檢測到的數(shù)據(jù)在送往操作站存儲同時,也在PLC中實時存儲,以提高系統(tǒng)的冗余度。
一般認為PLC不容易數(shù)據(jù)采集和存儲[4],F(xiàn)X2n 為我們提供了8K字存儲區(qū),可以滿足每批發(fā)酵的數(shù)據(jù)量。我們使用了兩種方法:1.定時采集 每隔一段時間采樣一次,存儲后,指針加1, 存儲格式固定, 存儲區(qū)的長度與已存數(shù)長度相配,不存時間。2.變化采集 當被采集的參數(shù)的變化值大于預定的記錄精度,把此時的數(shù)據(jù)和時間存入存儲區(qū)。使用變址寄存器V,Z,改變軟元件地址號,對文件寄存器地址號變址修改。
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主營:世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(福克斯波羅):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉換、輸入/輸出信號處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)
結構的zui現(xiàn)代化的容錯控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅動模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
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