在現(xiàn)代設(shè)施農(nóng)業(yè)中,精確的水,肥,藥的用量控制是提高產(chǎn)量和提高效率的關(guān)鍵。這就需要控制器能夠準(zhǔn)確地讀取流量計(jì)的數(shù)據(jù)。為了達(dá)到這一目的,控制器通過(guò)Profinet轉(zhuǎn)Modbus RTU網(wǎng)關(guān)與流量計(jì)通訊。這個(gè)過(guò)程中,Profinet作為現(xiàn)代工業(yè)通信標(biāo)準(zhǔn),能夠?qū)崿F(xiàn)高速穩(wěn)定的數(shù)據(jù)傳輸。Modbus RTU則是一種常用的串行通信協(xié)議,能夠?qū)鬏敂?shù)據(jù)進(jìn)行可靠的校驗(yàn)。通過(guò)Profinet轉(zhuǎn)Modbus RTU網(wǎng)關(guān)的轉(zhuǎn)換,控制器能夠充分利用 Profinet和Modbus RTU的優(yōu)勢(shì),實(shí)現(xiàn)與流量計(jì)的連接,并讀取流量計(jì)傳感器的數(shù)據(jù)。
打開(kāi)博圖加載PLC,在這里使用的是1200PLC
配置PLC的IP地址(PLC的IP地址要與本機(jī)IP地址保持在同一網(wǎng)段)
添加GSD文件
安裝完GSD文件后,在網(wǎng)絡(luò)視圖下點(diǎn)擊打開(kāi)硬件目錄
找到Modbus轉(zhuǎn)Profinet網(wǎng)關(guān)驅(qū)動(dòng)并雙擊添加到博圖
點(diǎn)擊選擇并將modbus轉(zhuǎn)profibus網(wǎng)關(guān)驅(qū)動(dòng)接口與1200PLC相連
配置網(wǎng)關(guān)IP地址(網(wǎng)關(guān)IP地址與PLC保持在同一網(wǎng)段)
在設(shè)備視圖下點(diǎn)擊硬件目錄,選擇讀8個(gè)字節(jié)長(zhǎng)度,寫(xiě)8個(gè)字節(jié)長(zhǎng)度
雙擊進(jìn)入設(shè)備視圖,右擊網(wǎng)關(guān)進(jìn)行分配設(shè)備名稱(chēng)
點(diǎn)擊更新,自動(dòng)搜索到設(shè)備,點(diǎn)擊分配設(shè)備名稱(chēng)即可
下載到組態(tài)到PLC
選擇PN/IE_1,點(diǎn)擊開(kāi)始搜索,選擇搜索到的設(shè)備,點(diǎn)擊下載
組態(tài)下載到PLC(按照提示操作即可完成)
打開(kāi)Modbus轉(zhuǎn)Profinet網(wǎng)關(guān)調(diào)試軟件,新建工程并添加網(wǎng)關(guān)設(shè)備
打開(kāi)PN2MRMI下拉菜單,點(diǎn)擊HPort - O:[ethernet]:[PROFINET]設(shè)置IP地址;點(diǎn)擊PROFINET修改網(wǎng)關(guān)設(shè)備名稱(chēng)(應(yīng)與博圖配置的網(wǎng)關(guān)名稱(chēng)保持一致)
打開(kāi)智能流量計(jì)說(shuō)明書(shū)
該溫濕度傳感器采用485接口,波特率默認(rèn)為9600,數(shù)據(jù)位8,停止位1,無(wú)校驗(yàn)
右擊ModbusRTU插入節(jié)點(diǎn),設(shè)置從站地址
打開(kāi)Port - 1:[RS485]:[ModbusRTU]下拉菜單,點(diǎn)擊ModbusRTU設(shè)置波特率,數(shù)據(jù)位,校驗(yàn)位,停止位
流量計(jì)支持03,16功能碼
03讀標(biāo)方累計(jì)累計(jì)流量小數(shù)位數(shù),標(biāo)方瞬時(shí)流量
16寫(xiě)流量報(bào)警下限值,流量報(bào)警下限值小數(shù)位數(shù)
在工具欄下找到通訊設(shè)置,搜索IP地址
點(diǎn)擊下載即可完成網(wǎng)關(guān)與從站配置
下載完成后,返回博圖,添加監(jiān)控表,轉(zhuǎn)至在線監(jiān)控
控制器通過(guò)Profinet轉(zhuǎn)Modbus RTU網(wǎng)關(guān)與流量計(jì)通訊,在真正意義上的現(xiàn)代設(shè)施農(nóng)業(yè)中起著至關(guān)重要的作用,這種技術(shù)可以實(shí)現(xiàn)對(duì)農(nóng)業(yè)生產(chǎn)流程中的各項(xiàng)數(shù)據(jù)的準(zhǔn)確掌控。通過(guò)對(duì)流量計(jì)數(shù)據(jù)的精確獲取,農(nóng)業(yè)生產(chǎn)企業(yè)可以更好地評(píng)估其生產(chǎn)能力和產(chǎn)量,進(jìn)而制定更加精細(xì)化的生產(chǎn)計(jì)劃,達(dá)到更好的經(jīng)濟(jì)效益和社會(huì)效益。
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