本案例是客戶用西門子1200PLC通過穩(wěn)聯(lián)技術Modbus轉(zhuǎn)Profinet網(wǎng)關WL-ABC3010連接流量計的配置案例。
方法如下:
1、打開博圖軟件,導入網(wǎng)關gsd文件;
![poYBAGL7b36AQ9vcAAA5fjtMZPI286.png](https://file.elecfans.com/web2/M00/61/09/poYBAGL7b36AQ9vcAAA5fjtMZPI286.png)
2、在硬件目錄中選擇對應的Modbus轉(zhuǎn)Profinet網(wǎng)關;
![pYYBAGL7b4eAfKCiAABEvrRGvtU516.png](https://file.elecfans.com/web2/M00/61/A6/pYYBAGL7b4eAfKCiAABEvrRGvtU516.png)
3、設置網(wǎng)關的ip地址和設備名稱;
![pYYBAGL7b42AHVk6AABhyNNA5pw244.png](https://file.elecfans.com/web2/M00/61/A6/pYYBAGL7b42AHVk6AABhyNNA5pw244.png)
4、添加Modbus轉(zhuǎn)Profinet網(wǎng)關的輸入輸出總長度;
![poYBAGL7b5GAI0uIAAA9vPnQMlc018.png](https://file.elecfans.com/web2/M00/61/09/poYBAGL7b5GAI0uIAAA9vPnQMlc018.png)
5、下載配置到PLC;
6、配置網(wǎng)關步驟;
7、點擊新建圖標,選擇PN2MM;
![pYYBAGL7b5aAOcAkAAA9wns71c0658.png](https://file.elecfans.com/web2/M00/61/A6/pYYBAGL7b5aAOcAkAAA9wns71c0658.png)
8、設置網(wǎng)關的IP地址和設備名稱;
![poYBAGL7b5qAYCCDAAAw417ao7I579.png](https://file.elecfans.com/web2/M00/61/09/poYBAGL7b5qAYCCDAAAw417ao7I579.png)
![poYBAGL7b6GAbC9gAAAZ5fNloC8006.png](https://file.elecfans.com/web2/M00/61/09/poYBAGL7b6GAbC9gAAAZ5fNloC8006.png)
9、設置網(wǎng)關的485參數(shù);
10、根據(jù)手冊參數(shù)可知波特率為9600,無校驗數(shù)據(jù)位8,停止位1;
![pYYBAGL7b6aAcHmRAADAFIcVv_k973.png](https://file.elecfans.com/web2/M00/61/A6/pYYBAGL7b6aAcHmRAADAFIcVv_k973.png)
11、單擊右鍵插入從站站號;
![pYYBAGL7b6uALUuUAABAM7nYiug427.png](https://file.elecfans.com/web2/M00/61/A6/pYYBAGL7b6uALUuUAABAM7nYiug427.png)
12、Node處插入命令根據(jù)從站手冊得知需要用到10H功能碼(手冊并沒有標明,但是根據(jù)通訊說明第三條可知參數(shù)都是浮點數(shù)所以肯定要寫多寄存器,故用10H功能碼);
![pYYBAGL7b6-AWTjlAACiH-_RSKE518.png](https://file.elecfans.com/web2/M00/61/A6/pYYBAGL7b6-AWTjlAACiH-_RSKE518.png)
13、選擇需要的地址(客戶需要對累積量清零和零點校準進行寫操作)從參數(shù)表可得知地址為1076和1104兩條;
![poYBAGL7b7SAMbg-AACr6n9-zJ4233.png](https://file.elecfans.com/web2/M00/61/09/poYBAGL7b7SAMbg-AACr6n9-zJ4233.png)
![pYYBAGL7b7iAPtZIAACuUBsTRwo858.png](https://file.elecfans.com/web2/M00/61/A6/pYYBAGL7b7iAPtZIAACuUBsTRwo858.png)
14、內(nèi)存映射地址:對應在PLC的IQ地址區(qū)顯示位置,如我們的I地址是從68開始那么映射地址為0代表寄存器數(shù)據(jù)會顯示在IW68和IW70兩處;
15、字節(jié)交換:類似于PLC程序中的swap功能,可根據(jù)需求使用;
16、命令狀態(tài)字:監(jiān)控從站在線狀態(tài),默認關閉;
17、無響應命令動作:分為保持和清零,是從站超時掉線后對最后一次數(shù)據(jù)的處理。
以上就是modbus通訊案例。操作更為簡單便捷,免去大量的編程工作。
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