【正文】
3 控制網(wǎng)絡(luò)系統(tǒng) PLC控制系統(tǒng)中央控制室與現(xiàn)場 PLC子站之間采用最先進的控制網(wǎng)絡(luò) . 中央控制室與廠級管理層之間采用 100Mdps 的以太通訊網(wǎng),該網(wǎng)帶有 Email功能,能向 mail server發(fā)送用戶自定義信息,故障信息,狀態(tài)信息等,通過網(wǎng)關(guān)(以太網(wǎng)交換器)或 PLC可與其他控制網(wǎng)絡(luò)、現(xiàn)場總線相連。 Digest this article mainly introduced PLC in the city sewage treatment concrete application example, the system introduced the city sewage treatment technical process as well as based on SIEMENS S7400 the series PLC sewage treatment implementation plan, introduces the city sewage treatment plant supervisory system data acquisition the programmable controller was PLC is the grand total puter technology, the automatic control technology and the munication one kind new, the general automatic control device. Now the programmable controller already became importantly, most reliable, the application situation most widespread industry control has the function strong, the reliability high, the use nimble convenient, easy to program as well as the adaptation industry environment and s o on a series of order to enhance the sewage treatment plant the movement management level, PLC has also bee one of this system important position units, in this system various units according to certain topology interconnection constitution sewage treatment plant control system. Key word sewage treatment??删幊炭刂破骷?PLC 是綜和了計算機技術(shù)、自動控制技術(shù)和通信技術(shù)的一種新型的、通用的自動控制裝置。 Hardware disposition。 現(xiàn)場生產(chǎn)過程 PLC控制系統(tǒng) ⑴ 預處理 PLC 控制及檢測部分 廠內(nèi) 1預處理 PLC子站位于污泥脫水間控制室內(nèi)。 ⑵ BAF 生物濾池 PLC 控制及檢測部分 廠內(nèi) 2BAF生物濾池 PLC子站位于變電所低壓配電室控制室內(nèi)。 建立與外部 Interner 的雙向連接,便于發(fā)布信息和從外部獲取信息,建立現(xiàn)代企業(yè)形象。 人機界面:最簡單的人機界面是指示燈和按鈕,目前液晶屏(或觸摸屏)式的一體式操作員終端應(yīng)用越來越廣泛,由計算機(運行組態(tài)軟件)充當人機界面非常普及。上位機監(jiān)控軟件采用當前流行的美國 GE 公司的 組態(tài)軟件來實現(xiàn)。 報警模塊不論軟件工作在何種方式下,一旦出現(xiàn)超值,系統(tǒng)確認后并發(fā)出報警,屏幕上顯示報警內(nèi)容和地點,以便采