目錄
摘要……………………………………………………………………...1
Abstract………………………………………………………………….2
1引言……………………………………………………………………3
2設(shè)計方案及選擇………………………………………………………4
2.1設(shè)計方案………………………………………………………………………..4
2.2方案選擇………………………………………………………………………..4
3水塔水位系統(tǒng)PLC硬件設(shè)計……………………………………………….5
3.1PLC邏輯控制器………………………………………………………………..5
3.1.1可編程控制器的產(chǎn)生及發(fā)展………………………………………………5
3.1.2PLC基本結(jié)構(gòu)………………………………………………………………6
3.1. 3LC的特點…………………………………………………………………..8
3.1.4LC工作原理………………………………………………………………..9
3.2要求獨立完成水塔水位控制PLC系統(tǒng)設(shè)計與調(diào)試…………………………11
3.3位系統(tǒng)控制電路……………………………………………………………….12
3.4輸入/輸出分配…………………………………………………………………12
3.4.1列出水塔水位控制系統(tǒng)PLC的輸入/輸出接口分配表…………………12
3.4.2系統(tǒng)的輸入/輸出設(shè)備…………………………………………………….13
4塔水位控制系統(tǒng)PLC軟件設(shè)計……………………………………………13
4.1工作過程……………………………………………………………………….13
4.2程序流程圖…………………………………………………………………….14
4.3梯形圖………………………………………………………………………….15
4.4 水塔水位控制系統(tǒng)梯形圖的對應(yīng)指令表……………………………………16
5總結(jié)……………………………………………………………………17
參考文獻、資料……………………………………………………………………..18
致謝…………………………………………………………………………………..19

摘要
在工農(nóng)業(yè)生產(chǎn)過程中，經(jīng)常需要對水位進行測量和控制。水位控制在日常生活中應(yīng)用也相當(dāng)廣泛，比如水塔、地下水、水電站等情況下的水位控制。而水位檢測可以有多種實現(xiàn)方法，如機械控制、邏輯電路控制、機電控制等。本文采用PLC邏輯控制器進行主控制安裝一個自動測水位裝置。利用水的導(dǎo)電性連續(xù)地全天候地測量水位的變化，把測量到的水位變化轉(zhuǎn)換成相應(yīng)的電信號，主控臺應(yīng)用MCGS組態(tài)軟件對接收到的信號進行數(shù)據(jù)處理，完成相應(yīng)的水位顯示、故障報警信息顯示、實時曲線和歷史曲線的顯示，使水位保持在適當(dāng)?shù)奈恢谩?/p>

[關(guān)鍵詞] ： 水位控制、PLC邏輯控制器、菱PLC fx2n

Abstract

In the industrial and agricultural production process, often need to measure and control the water level. Water level control in daily life are very wide application, such as water tower, groundwater, hydropower station of water level control. And the water level detection can have a variety of realization method, such as mechanical control, logic circuit control, mechanical and electrical control, etc. In this paper, the PLC control, the installation of a water tank automatic water level measurement device. The conductivity of the water is used for measuring the change of water level to round-the-clock, to measure the change of water level converted into electrical signal, ZhuKongTai application MCGS software docking received signal data processing, complete the corresponding level display, fault alarm information display, real-time curves and history of the curve shows, to bring the level remain in place.

 [key words] : water level control, mitsubishi PLC fx2n