为了建立PLC与组太王的通信连接,可以在PLC编程软件的菜单“PLC/串行口设置”中设置通信地址和通信参数,也可以在软件中直接用编程(MOV指令)来实现,按RS485规定具体设置是:
波特率设为9600bit/s,数据位设为7位,l位起始位,2位停止位,偶校验,采用协议1。用编程软件设置,其中在D8121中设置通信地址。
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