一概述Summarize随着PC产业的不断发展USB接口正在逐渐替代.doc

概述 Summarize 随着PC产业的不断发展,USB接口正在逐渐替代老式PC的各种低速外围接口，然而目前工业环境中许多重要的设备仍然使用RS422/RS485接口界面设计，因此许多用户使用USB到RS422/RS485转换器来实现PC机与RS422/RS485设备之间的数据传输。 With the continuous development of the PC industry, USB interface is substituting the old industrial and low speed PC interface, but there are so much important equipment still use the RS485/ RS422 interface in the industrial environment. So many users have to use the USB to RS485 / RS422 converter to realize the data transfer between PC and RS485 / RS422 equipment. DT-5019是一款通用的USB2.0 TO RS422/RS485转换器，无需外加电源，兼容USB2.0 、RS422、RS485标准，能够将单端的USB信号转换为平衡差分的RS422或RS485信号，提供每线浪涌600W保护功率，以及各种原因在线路上产生的浪涌电压并且极小的极间电容保证了RS422/RS485接口的高速传输，RS422、RS485端通过RJ45及DB9公头的连接器连接。转换器内部带有零延时自动收发转换，独有的I/0电路自动控制数据流方向，而不需任何握手信号 如（如RTS、DTR等）无需跳线线设置实现全双工(RS422)、半双工(RS485)模式转换，即插即用。确保适合一切现有的通信软件和接口硬件。 DT-5019 is a universal converter of USB 2.0 to RS485/RS422, which is without addition power supply, compatible with USB, RS422, RS485 standards. It can convert USB signals to a balanced differential RS422 or RS485 signals. Each line has surge protection, and various surge voltage protections. The tiny capacitance distance guarantees RS422 / RS485 interface of high-speed transmission. RS422, RS485 connect by RJ45 and DB9 interface. Converter with zero delay automatic transceiver inside, unique I/O circuit automatically control data flow direction, without any handshake signals (such as RTS, DTR,etc.) and jumpers set realize full-duplex, half-duplex mode conversion, plug and play. Ensure the product fix for all existing communication software and hardware interface. DT-5019接口转换器可以为点到点、点到多点的通信提供可靠的连接，点到多点每台转换器可允许连接32个RS422或RS485接口设备，数据通讯速率300-921600bps，带有电源指示灯及数据流量指示灯可指示故障情况、支持的通讯方式有USB2.0到RS422、USB2.0到 RS485转换。 DT-5019 converters for point-to-point, point-to-multi point reliable communications. Provides the point to more each converter allows connecting 32 RS422 or RS485 devices, data rate of 300 to 921600bps. The power and data flow indicator light will