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从用户的反馈信息可以看出,在网络设备的采购中,采购量最大的为I/O设备、连接器、网线和电缆,以及一些网络的基础设备(网桥,交换机,路由器)。在所有的通信方法中,以太网TCP/IP协议,RS-232标准以及4-20mA标准信号通信占有主导地位。
From the user’s feedback, we can see that the most purchases of network equipment are I / O devices, connectors, network cables and cables, as well as some network infrastructure (bridges, switches, routers). Among all communication methods, Ethernet TCP / IP protocol, RS-232 standard and 4-20mA standard signal communication occupy the leading position.