現(xiàn)場控制層 現(xiàn)場控制層采用研華公司的產(chǎn)品,稱為軟PLC的 Adam5511. 這是一種模塊化的工業(yè)控制機(jī),固化有dos操作系統(tǒng),支持C語言編程,支持Modbus通訊協(xié)議,每臺(tái)鍋爐由一臺(tái)Adam5511負(fù)責(zé)對(duì)其進(jìn)行數(shù)據(jù)采集及控制,另有一臺(tái)Adam5511負(fù)責(zé)系統(tǒng)公共部分的數(shù)據(jù)采集及控制。 每臺(tái)Adam5511配置16點(diǎn)模擬量輸入,4點(diǎn)模擬量輸出,16點(diǎn)開關(guān)量輸入輸出??刹杉?6點(diǎn)鍋爐運(yùn)行現(xiàn)場數(shù)據(jù),組成4個(gè)閉環(huán)控制回路。分別控制蒸汽鍋爐的水位、汽壓、爐膛負(fù)壓,鼓風(fēng)四個(gè)回路或熱水鍋爐的出水溫度、爐膛負(fù)壓及鼓風(fēng)三個(gè)回路。
系統(tǒng)軟件 系統(tǒng)的操作站軟件采用了中文工控組態(tài)軟件MCGS設(shè)計(jì),MCGS是全中文工業(yè)自動(dòng)化控制組態(tài)軟件,可穩(wěn)定運(yùn)行于Windows95/98/NT操作系統(tǒng),集動(dòng)畫顯示、流程控制、數(shù)據(jù)采集、設(shè)備控制與輸出、網(wǎng)絡(luò)數(shù)據(jù)傳輸、雙機(jī)熱備、工程報(bào)表、數(shù)據(jù)與曲線等諸多強(qiáng)大功能于一身,使生成的系統(tǒng)圖文并貌,運(yùn)行穩(wěn)定可靠。 系統(tǒng)的現(xiàn)場控制站的軟件采用Turbo C 3.0設(shè)計(jì),軟件采用模塊化的設(shè)計(jì)方法,它以實(shí)時(shí)數(shù)據(jù)庫為核心,各種數(shù)據(jù)采集、處理、運(yùn)算以及控制功能都設(shè)計(jì)成功能塊的形式,系統(tǒng)的實(shí)時(shí)數(shù)據(jù)以及各功能塊參數(shù)都存于實(shí)時(shí)數(shù)據(jù)庫中,各功能塊通過實(shí)時(shí)數(shù)據(jù)庫交換數(shù)據(jù)??赏ㄟ^在上位機(jī)進(jìn)行組態(tài)然后下載組態(tài)參數(shù)至5511中構(gòu)成新系統(tǒng)??刂普九c操作站之間采用modbus協(xié)議交換數(shù)據(jù)。
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