施耐德产品140XTS00206 Quantum

140XTS00206 Quantum

市场上任何触摸屏与PLC通讯不上不外乎要确认四个问题：

（1）plc参数和工程里的是否一致；

（2）通讯线是否按照接线图的引脚接线；

（3）工程里设置的com口在屏上接的时候是否正确；

（4）参数和线确认OK，的情况下，看看是不是plc程序或是plc的地址问题。

1

先判断参数

用PLC的编程软件接上PLC测试看看PLC的参数是多少，工程里设置的参数是否和测试出来的一致。这里面有几个参数需要特别注意的：

（1）通信口的设置：要确认清楚PLC连接触摸屏的COM1口还是COM2口；

（2）设备类型：这个是重要的，如果协议没选对的话，其他就不用说了；

（3）连接方式：PLC跟触摸屏的连线，确认好是RS485，还是RS232C；

（4）接口参数跟PLC站号：要跟PLC里面的设置一致。

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