關(guān)鍵詞:Ethercat ModbusRTU 馬達(dá)保護(hù)器Modbus轉(zhuǎn)Ethercat
背景:本案例是某煤礦項(xiàng)目中,客戶使用Ethercat轉(zhuǎn)ModbusRTU網(wǎng)關(guān)連接Ethercat協(xié)議的PLC與控馬達(dá)保護(hù)器設(shè)備,主要是將Ethercat主站發(fā)出的控制信號(hào)通過Ethercat轉(zhuǎn)ModbusRTU發(fā)送給空壓機(jī)。
![wKgaomWqOVuAY-RIAAIG5amwMwg512.png](https://file1.elecfans.com/web2/M00/BE/4B/wKgaomWqOVuAY-RIAAIG5amwMwg512.png)
創(chuàng)建工程
1. 打開配置軟件圖標(biāo)GW Modbus Builder打開軟件,如下圖:
![wKgaomWqOWuAf7NlAAAUbkdkaeo003.png](https://file1.elecfans.com/web2/M00/BE/4B/wKgaomWqOWuAf7NlAAAUbkdkaeo003.png)
![wKgZomWqOXuAAopQAAHGgP-rTnc667.png](https://file1.elecfans.com/web2/M00/BD/60/wKgZomWqOXuAAopQAAHGgP-rTnc667.png)
2. 點(diǎn)擊右上角組態(tài)Modbus設(shè)備,選擇“Modbus Master”,雙擊添加一個(gè)網(wǎng)關(guān)模塊,如圖所示:
![wKgaomWqOZ2AL0p3AACm1lehxmU788.png](https://file1.elecfans.com/web2/M00/BE/4B/wKgaomWqOZ2AL0p3AACm1lehxmU788.png)
雙擊ModbusMaster配置Modbus的485參數(shù)配置
1. 展雙擊主站圖標(biāo),設(shè)定485總線的參數(shù)。
![wKgZomWqObiAcjN7AADkk6cFpNM257.png](https://file1.elecfans.com/web2/M00/BD/60/wKgZomWqObiAcjN7AADkk6cFpNM257.png)
2. 設(shè)置Modbus從站的配置參數(shù)
讀數(shù)據(jù)(功能碼03)查詢數(shù)據(jù)幀此功能允許用戶獲得設(shè)備采集與記錄的數(shù)據(jù)及系統(tǒng)參數(shù)。表7.6的例子是從一號(hào)機(jī)讀5個(gè)采集到的基本數(shù)據(jù),(數(shù)據(jù)幀中每個(gè)地址占用兩個(gè)字節(jié))他們是系統(tǒng)采集到的Ia,Ib,Ic,Uab,Ucb的5個(gè)量。他們在裝置中的地址分別是0100H-0104H
![wKgZomWqOdeAAm0WAAQHGBRoPUM708.png](https://file1.elecfans.com/web2/M00/BD/60/wKgZomWqOdeAAm0WAAQHGBRoPUM708.png)
由案例可知,從站功地址為1,能碼為03,讀取的寄存器數(shù)量為5個(gè),即可開始進(jìn)行Modbus轉(zhuǎn)Ethercat網(wǎng)關(guān)的配置。
添加03功能碼,地址換算成10進(jìn)制為256,寄存器數(shù)量5個(gè)站地址為1
![wKgZomWqOemATyjqAAG4-YwF1t4585.png](https://file1.elecfans.com/web2/M00/BD/60/wKgZomWqOemATyjqAAG4-YwF1t4585.png)
3. 設(shè)置網(wǎng)關(guān)在Ethercat一側(cè)的輸入輸出長度。
選擇工具-在線
![wKgZomWqOgCAY1OXAABtbP2A2Kg502.png](https://file1.elecfans.com/web2/M00/BD/60/wKgZomWqOgCAY1OXAABtbP2A2Kg502.png)
協(xié)議類型選擇Ethercat
![wKgaomWqOh2AYPevAAB1eGbO7DQ929.png](https://file1.elecfans.com/web2/M00/BE/4B/wKgaomWqOh2AYPevAAB1eGbO7DQ929.png)
設(shè)置好輸入輸出長度
![wKgZomWqOi6ATL5gAAHcJGGKbxI874.png](https://file1.elecfans.com/web2/M00/BD/60/wKgZomWqOi6ATL5gAAHcJGGKbxI874.png)
4. 配置完成后下載組態(tài)到網(wǎng)關(guān)即可,在ethercat主站側(cè)設(shè)置完畢后即可使用.
審核編輯 黃宇
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