本案例是使用Profinet轉(zhuǎn)RS232網(wǎng)關(guān)連接XK3190-A33E稱重顯示器的配置案例。
所需設備:西門子1200PLC一臺,Profinet轉(zhuǎn)RS232網(wǎng)關(guān)一臺,XK3190-A33E稱重顯示器一臺。通過RS232轉(zhuǎn)Profinet網(wǎng)關(guān)將稱重儀的數(shù)據(jù)反饋到西門子PLC。
使用方法:
1、打開西門子博圖配置軟件,添加PLC;
2、導入Profinet轉(zhuǎn)RS232網(wǎng)關(guān)GSD文件;
3、設置Profinet轉(zhuǎn)RS232網(wǎng)關(guān)IP及設備名稱(本例名稱為GW1設備IP為192.168.20.5);
4、設置Profinet轉(zhuǎn)RS232網(wǎng)關(guān)發(fā)送接收數(shù)據(jù)長度,下載組態(tài)到PLC;
5、打開XK3190-A33E稱重顯示器手冊;
6、設置好設備的232總線參數(shù)(輸出方式,波特率數(shù)據(jù)位置等),注意:網(wǎng)關(guān)波特率最高為115200,如需更高波特率請聯(lián)系定制。設置Profinet轉(zhuǎn)RS232網(wǎng)關(guān):設置Profinet轉(zhuǎn)RS232網(wǎng)關(guān)的IP地址及設備名稱(與PLC保持一致);
7、設置Profinet轉(zhuǎn)RS232網(wǎng)關(guān)232參數(shù);
8、Profinet轉(zhuǎn)RS232網(wǎng)關(guān)可設置為主從模式和生產(chǎn)/消費者模式,主從模式需要從站應答方可繼續(xù)發(fā)送指令,生產(chǎn)消費者模式輸入與輸出互不干擾,物理標準改為232接口模式,網(wǎng)關(guān)分為3個232口需要單獨設置可分別帶三臺232設備;
9、設置Profinet轉(zhuǎn)RS232網(wǎng)關(guān)的232參數(shù)波特率數(shù)據(jù)位校驗停止位等。(與連接設備保持一致),以生產(chǎn)消費者模式為例,添加生產(chǎn)者或者消費者;
10、添加消費者接收設備數(shù)據(jù);
11、根據(jù)設備手冊得知,儀表有三種發(fā)送模;
12、由范例可知儀表發(fā)送字節(jié)數(shù)為12個字節(jié),所以數(shù)據(jù)長度為12;
13、數(shù)據(jù)長度設置為12如長度不對那么從站數(shù)據(jù)長度對應不上則會被Profinet轉(zhuǎn)RS232網(wǎng)關(guān)廢棄,不會發(fā)送到PLC,內(nèi)存映射起始地址對應PLC的I地址IB68.配置完成后下載至網(wǎng)關(guān)并重啟后即可使用。同理將發(fā)送設置成對應的數(shù)據(jù)長度,如果從站沒有回復可以把Profinet轉(zhuǎn)RS232網(wǎng)關(guān)換成生產(chǎn)消發(fā)送即可。內(nèi)存映射起始地址1500對應PLC的Q地址起始本例為QB64開始;
14、配置好后將工程下載到Profinet轉(zhuǎn)RS232網(wǎng)關(guān)即可。
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