ABB PM866K02
编程
用于现有的ASCII通讯的其它两个功能块必须分别进行SINT功能的参数设置。
发送信息
在用户程序中使用SEND功能从一个40或50系列中央处理单元发送ASCII信息到另一台设备。
接收信息
在用户程序中使用REC功能在一个40或50系列中央处理单元接收ASCII信息。
关于SINI,SEND和REC功能的详细说明,可以在AC31GRAF编程软件的帮助文件或在AC31GRAF编程软件文件里找到。
编程举例
使用下面的参数值通过SINIT功能块设置通讯接口:
●COM1通讯接口
●9600波特
●1个停止位
●8个数据位
●无奇偶校验
为在末端看得到信息,定义一个回应。在信息末尾设定回车返回(CR)。
●这个协议使用中央处理单元的串行接口(COM1).作为ABB编程接口的装置保留
通过这个协议,在中央处理单元上.不用任何设置或任何特别的程序,可以读或写所有的变量值。你简单地使用灰色07 SK 50或07 SK 52编程电缆。
通讯参数是:
●9600波特
●8个数据位
●1个停止位
●无奇偶校验
●这协议也可用在CS31连接端口(COM2)上
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