捷米特JM-EIP-RTU網(wǎng)關(guān) Modbus轉(zhuǎn)ETHERNET/IP用于將多個變頻器連接到Ethernet/Ip主網(wǎng),以便森蘭變頻器可以由AB PLC控制。配備專用于JM-EIP-RTU網(wǎng)關(guān)的EDS文件,AB PLC主站可以控制森蘭逆變器從站。
使用AB系統(tǒng)的配置方法
1, 運行RSLogix 5000程序加載捷米特JM-EIP-RTU的EDS文件:
2,新建工程默認或填寫響應(yīng)的名稱
3,New Module添加捷米特JM-EIP-RTU網(wǎng)關(guān):
4,在“Name”中填入捷米特JM-EIP-RTU網(wǎng)關(guān)的名稱,在“IP Address”中填入網(wǎng)關(guān)的IP地址
5,點擊“Change”設(shè)置網(wǎng)關(guān)的輸入輸出數(shù)據(jù)長度。下圖舉例設(shè)置了20 字節(jié)的輸入數(shù)據(jù)和20字節(jié)的輸出數(shù)據(jù):
6,點擊菜單 Communications->Download,下載工程到 PLC中:
7,打開從站通訊手冊,確認從站支持ModbusRTU通訊協(xié)議;
8,設(shè)置網(wǎng)關(guān)的485總線參數(shù),(波特率,數(shù)據(jù)位,停止位,奇偶校驗等)和網(wǎng)關(guān)配置軟件保持一致;
9、根據(jù)操作手冊可得知需要讀寫的參數(shù)寄存器地址,該地址顯示可讀可寫則地址區(qū)為40000使用03H功能碼;打開 GW Modbus Builder軟件,雙擊軟件右側(cè)設(shè)備列表中的“Modbus Master”,可以添加一個虛擬主站到項目中雙擊軟件右側(cè)設(shè)備列表中的“Modbus Slave”,可以添加一個從站到此主站的 Modbus總線中,
10,雙擊主窗口中的“Modbus Master”圖標(biāo),設(shè)置 Modbus總線的運行參數(shù)和網(wǎng)關(guān)做為
Modbus主站工作時的特性,如下圖:
11,參數(shù)說明:
波特率:Modbus-RTU總線的運行頻率。
設(shè)置該從站的報文。
12,如下圖所示,用戶給 1號從站添加了 1條寫線圈、1條讀線圈、一條寫寄存器、一條讀寄存器。
13,用戶配置完成 Modbus報文后,將配置下載到網(wǎng)關(guān)中。
以上是MODBUS從設(shè)備如何通過捷米特JM-EIP-RTU(MODBUS到ETHERNET/IP)網(wǎng)關(guān)快速連接到ETHERNET/IP主通信網(wǎng)絡(luò)的案例
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