07KR91D
07KR91D
PLC编程过程
首先确认S7-200的ModbusMaster库文件已经安装,同时了解V20的Mobus协议中的主要寄存器地址,如表2所示。
表2V20变频器的主要寄存器地址
在编译程序之前,选择“程序块”->“库”右键,选择“库存储区”;在点击“建议地址”选择V存储区的地址后点击“OK”退出。后调用指令进行初始化ModbusMaster端口。
07KR91D
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