《Reliance DSA-MTR 20A》

Reliance DSA-MTR 20A

Reliance DSA-MTR 20A 应用特点：

【厦门光沃自动化设备有限公司】
【联 系 人：陈小姐】
【免费热线：0592-5709825】
【24小时开机：18030229053 】     
【工作QQ: 2479261344】

触摸屏的通讯设置及界面设计

在硬件连接完成后，需要在组态软件中指定系统的硬件配置以及设置一些通信参数等等。首先制定所使用的触摸屏的类型，这里选择默认的 UG420（640＊480 10.4inches）;下一步指定和触摸屏通讯的PLC类型及型号，这里选SIEMENS S7-PROFIBUS;最后一步指定系统参数，首先是读区和写区，读区是指作为从PLC读入数据的缓冲，如果系统中需要显示趋势图的话那么读区应当设大一些，一般设1000个字就可以了，写区用于显示存储屏幕的状态、页码、画面层叠以及报警状态等等。另外在对话框No.of Word Setting for I/O中需要指出触摸屏的MPI地址，以及传输的帧长度，MPI地址在PLC的硬件组态里已经定义好了，两者必须一致，否则会出现通信错误。另外帧长度为32字节;奇偶校验为奇校验;数据长度8位;停止位1位;通讯方式RS-485。

Reliance 0-57404-3A/0574043A/57404-3A/57404/574043A
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