描述
信息层/Ethernet（以太网）信息层为网络系统中最高层，主要是在PLC、设备控制器以及生产管理用PC之间传输生产管理信息、质量管理信息及设备的运转情况等数据，信息层使用最普遍的Ethernet。它不仅能够连接windows系统的PC、UNIX系统的工作站等，而且还能连接各种FA设备。Q系列PLC系列的Ethernet模块具有了日益普及的因特网电子邮件收发功能，使用户无论在世界的任何地方都可以方便地收发生产信息邮件，构筑远程监视管理系统。同时，利用因特网的FTP服务器功能及MELSEC专用协议可以很容易的实现程序的上传/下载和信息的传输。
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