USB to RSRS422 is the industrial control intelligent converter from USB to RS-485/RS-RS422. It is the best solution to conduct munication RS-485/RS-RS422 of through USB. Compared with common RS-232?RS-485/RS422 converter,USB to RS422 USB?RS-485 converter has such advantages as below:
Usually, we use RS-232 serial port of computer to connect RS-232?RS-485/RS422 converter to control RS-485/RS422 equipment.. Using this way, the programm realise the munication through visiting vomputer’s COM port. But there are some questions, mainly are : 1. RS-232 is outdated munication agreement. But many new computer, for example, notebook computer don’t have such interface. 2. RS232 is of low efficiency.( High-speed RS485 can realise the speed of 10Mbps,but RS-232 Port Baud rate of normal computer is max to 115kbps,which can’t satisfy the demand of transmission speed. 3. In many asion RS-232 to RS485/RS422 converter is needed, and converter need to get power from RS-232 port to normal use but may be lack of electricity.
But USB?RS-485/RS422 converter can satisfy above demands:1. USB(universal serial bus) is the most popular computer interface standard nowadays. Many computers have USB interface.2. Compared with RS-232, USB interface has a higher munication speed. USB1.1 can reach to 12Mbps, USB2.0 can reach to the speed of 300Mbps，and there are many speed and munication means which can totally satisfy the high-speed converter RS485’s requirement. 3.USB interface has a strong power supply ability, so USB?RS-485/RS422 converter don’t need get power through external( no problem of lacking of power.). And USB bus has other advantages, for example,hot wrap, convenient connection, hanging and connectiong many equipments.
USB to RS422/485 转换线(2.0) USB到RS232串口转换器，使USB和串口设备轻易连接，让串口设备具有即插即用、热插拔等功能。可满足笔记本连接各类串口设备，适用于与迷你型电话、数码相机、MODEM、ISDN终端适配器通信
特点
单片（ASIC）USB端口到串行端口通信
USB1.1/2.0 兼容的解决方案
传输速率最高可达 460，800 baud
内建 128 byte TX / 512 byte RX 缓存
支持自动握手协议
支持 Linux，Mac 系统
支持 Win95/98/98se/ME/2000/XP/NT3.5 以上
支持全速 USB 数据传输协议
抗电磁干扰设计
数据交换应用
带RS422/485接口的车载电脑
数控机床
工业仪器、仪表
检测设备监控系统
自动化控制设备与笔记本
规格
环境
操作温度 : 0 to 70°C (32 to 158°F), 5 to 95% RH
储存温度 : -20 to 85°C (-4 to 185°F), 5 to 95% RH
