产品介绍
•该产品是一款USB 2.0转RS232/422/485串口线，允许用户通过USB接口将笔记本电脑、PC或工作站与RS232、RS-232/422/485外形的串行设备连接起来进行通信。这款转接线简化了配置过程，无需额外的RS232或RS422/485适配器，提供了一种安装简便、操作方便、成本节约的解决方案，且便于携带。
产品特点
•USB支持：支持USB 2.0/1.1，最高数据传输速率可达480 Mbps。
•串口通信速率：串口通信速率最高可达921.6 Kbps。
•USB功能支持：支持USB暂停、恢复和远程唤醒功能。
•缓冲区大小：提供128字节的发送缓冲区和384字节的接收缓冲区，优化数据流处理。
•保护措施：内建15 kV ESD保护和400W浪涌保护，确保设备安全。
•指示灯：配备COM口POWER、TX、RX指示灯，方便监控设备状态。
•MCU配置工具：内置MCU配置工具，支持RS485双向数据控制。
•即插即用：支持即插即用功能，为串口数据线提供浪涌保护。
规格
•USB通信速率：高速480 Mbps,全速12Mbps。
•USB版本支持：支持USB1.1, 2.0。
•连接器类型：USB 2.0 A型。
信号：
•RS232：DCD, RXD, TXD, DTR, GND, DSR, RTS, CTS, RI。
•RS422：TX-, TX+, RX+, RX-, GND。
•RS485：Data-, Data+。
•物理连接器：针式DB9。
•FIFO缓冲区：
•发送：128字节。
•接收：384字节。
•波特率范围：50 bps至921.6 Kbps。
•数据位选择：7位、8位，9位。
•停止位选择：1位或2位。
•校验位选项：Odd, even, mark, space or no parity。
•流控方式：RTS/CTS或DTR/DSR，Xon/Xoff。
支持的系统
•Windows：支持Windows 10，如Windows 8.1、8、7、Vista和XP。
•Linux：支持最新版本的Linux操作系统。
•Mac：支持最新版本的macOS操作系统。
应用
•设备连接：适用于调制解调器、绘图仪、串行打印机、路由器、交换机、雕刻机等设备的连接。
•系统应用：包括POS机、门禁系统、自动取款机、嵌入式工控自动化系统、金融支付ATM系统、交通系统、工厂自动化和过程控制、医疗系统、远程访问服务器等。
<p><strong><span style=";font-family:宋体;font-weight:bold;font-size:15px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">型号：</span><span style="font-family:Calibri">IO-USB4285-02</span></span></strong></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:16px"><span style="font-family:Calibri">1.</span></span></strong></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">问：这款乐扩</span><span style="font-family:Calibri">USB</span><span style="font-family:宋体">转</span><span style="font-family:Calibri">485/422</span><span style="font-family:宋体">转换器</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">的</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">422</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">和</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">485</span><span style="font-family:宋体">对应的孔位</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">定义和接线孔位分别是什么</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">？</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：产品配备</span><span style="font-family:Calibri">DB9</span><span style="font-family:宋体">转接线端，用户在使用前请仔细阅读说明书，并检查接线线序。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">422</span><span style="font-family:宋体">对应的孔位定义为</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">1</span><span style="font-family:宋体">—</span><span style="font-family:Calibri">RXD-</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">2</span><span style="font-family:宋体">—</span><span style="font-family:Calibri">TXD+</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">3</span><span style="font-family:宋体">—</span><span style="font-family:Calibri">RXD+ </span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">4</span><span style="font-family:宋体">—</span><span style="font-family:Calibri">TXD-</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">5</span><span style="font-family:宋体">—</span><span style="font-family:Calibri">GND</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">6</span><span style="font-family:宋体">—空（</span><span style="font-family:Calibri">VCC</span><span style="font-family:宋体">本产品未用</span><span style="font-family:Calibri">)</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">485</span><span style="font-family:宋体">对应接线孔位定义为</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">1</span><span style="font-family:宋体">—空</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">2</span><span style="font-family:宋体">—</span><span style="font-family:Calibri">TX/RXD+(A)</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">3</span><span style="font-family:宋体">—空</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">4</span><span style="font-family:宋体">—</span><span style="font-family:Calibri">TX/RXD-(B)</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">5</span><span style="font-family:宋体">—</span><span style="font-family:Calibri">GND</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">6</span><span style="font-family:宋体">—空</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">注</span><span style="font-family:Calibri">:</span><span style="font-family:宋体">如果所配端子和图示不同请按</span><span style="font-family:Calibri">PCB</span><span style="font-family:宋体">丝印标识定义接线</span><span style="font-family:Calibri">.</span></span></p><p><img src="/data/upload/image/20220321/1647873014408453.png" title="1647873014408453.png" alt="图片1.png"/></p><p><span style=";font-family:宋体;font-size:14px"> </span></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:16px"><span style="font-family:Calibri">2.</span></span></strong></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">问：乐扩</span><span style="font-family:Calibri">USB</span><span style="font-family:宋体">转</span><span style="font-family:Calibri">RS422/485</span><span style="font-family:宋体">转换器接线之后如何调试？</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：简单测试通讯：下载串口调试助手，打开产品对应</span><span style="font-family:Calibri">COM</span><span style="font-family:宋体">口（</span><span style="font-family:Calibri">Win7</span><span style="font-family:宋体">以上系统需要右键管理员运行调试助手软件）。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">422</span><span style="font-family:宋体">通讯测试：用两根导线分别把</span><span style="font-family:Calibri">1</span><span style="font-family:宋体">，</span><span style="font-family:Calibri">4</span><span style="font-family:宋体">孔短接，</span><span style="font-family:Calibri">2</span><span style="font-family:宋体">，</span><span style="font-family:Calibri">3</span><span style="font-family:宋体">孔短接。发送数据后产品</span><span style="font-family:Calibri">TXD</span><span style="font-family:宋体">和</span><span style="font-family:Calibri">RXD</span><span style="font-family:宋体">指示灯会闪，并且软件接收到和发送相同的数据。测试结束，可以使用。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">485</span><span style="font-family:宋体">通讯测试：需要两个产品或其他提供</span><span style="font-family:Calibri">485</span><span style="font-family:宋体">收发的设备。按</span><span style="font-family:Calibri">485</span><span style="font-family:宋体">定义</span><span style="font-family:Calibri">A-A</span><span style="font-family:宋体">，</span><span style="font-family:Calibri">B-B</span><span style="font-family:宋体">接好线。打开调试助手发送数据，对方接受到一致数据无误码。对方发送数据接收框显示和对方发送一致，测试结束，可以使用。</span></span></p><p><span style=";font-family:宋体;font-size:14px"> </span></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:16px"><span style="font-family:Calibri">3.</span></span></strong></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">问：这款</span><span style="font-family:Calibri">USB</span><span style="font-family:宋体">转</span><span style="font-family:Calibri">RS422/485</span><span style="font-family:宋体">转换器在安装过程中需要注意哪些问题？</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">大致遇到的</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">简单问题解决</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">办法</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">：</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">1.</span><span style="font-family:宋体">插上</span><span style="font-family:Calibri">USB</span><span style="font-family:宋体">无法识别：更换电脑</span><span style="font-family:Calibri">USB</span><span style="font-family:宋体">接口或换其他电脑测试。安装执行文件驱动。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">2.</span><span style="font-family:宋体">打不开端口：</span><span style="font-family:Calibri">Win7</span><span style="font-family:宋体">以后系统，软件需要点右键以管理员身份运行。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">3.</span><span style="font-family:宋体">接上设备无法通讯成功：检查所接设备是不是使用</span><span style="font-family:Calibri">RS422</span><span style="font-family:宋体">或</span><span style="font-family:Calibri">RS485</span><span style="font-family:宋体">协议，接线需要对应定义，</span><span style="font-family:Calibri">RS422</span><span style="font-family:宋体">收发对接，</span><span style="font-family:Calibri">RS485A-A</span><span style="font-family:宋体">，</span><span style="font-family:Calibri">B-B</span><span style="font-family:宋体">对接。测量接线良好。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">4.</span><span style="font-family:宋体">本设备不能给外设提供电源，如果外设需要供电请另接电源适配器。</span></span></p><p><span style=";font-family:宋体;font-size:14px"> </span></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:15px;background:rgb(255,255,0);background:rgb(255,255,0)"><span style="font-family:宋体">型号：</span><span style="font-family:Calibri">IO-U234285</span></span></strong></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:16px"><span style="font-family:Calibri">1.</span></span></strong></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">问：</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">这款</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">乐扩</span><span style="font-family:Calibri">USB2.0</span><span style="font-family:宋体">转</span><span style="font-family:Calibri">RS232/422/485</span><span style="font-family:宋体">串口线</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">是否支持</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">协议软件选择</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">？</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">如何下载和安装驱动？</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：本产品支持协议软件选择。驱动和工具下载链接：</span></span></p><p><a href="http://www.mmui.com.cn/data/upload/file/EXAR1411.zip"><span style="text-decoration:underline;"><span style=";font-family:宋体;color:rgb(0,0,255);text-underline:single"><span style="font-family:Calibri">http://www.mmui.com.cn/data/upload/file/EXAR1411.zip</span></span></span></a></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">产品驱动安装，接口定义，协议修改设置部分请仔细阅读配套说明书。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">产品插上电脑</span><span style="font-family:Calibri">USB</span><span style="font-family:宋体">接口后红色（</span><span style="font-family:Calibri">Active</span><span style="font-family:宋体">）指示灯应亮起。安装好驱动后设备管理器会增加如图红框设备（不同系统显示可能不同，以实际电脑显示为准。）</span></span></p><p><img src="/data/upload/image/20220321/1647873036153921.png" title="1647873036153921.png" alt="图片2.png"/><span style=";font-family:宋体;font-size:14px"> </span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">右键该设备可进行属性修改，</span></span><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px"><span style="font-family:宋体">注意当使用</span><span style="font-family:Calibri">RS422</span><span style="font-family:宋体">或</span><span style="font-family:Calibri">RS485</span><span style="font-family:宋体">协议时需要勾选（</span><span style="font-family:Calibri">Port Settings</span><span style="font-family:宋体">）里的</span><span style="font-family:Calibri">RS-485</span></span></p><p><img src="/data/upload/image/20220321/1647873053244983.png" title="1647873053244983.png" alt="图片3.png"/><span style=";font-family:宋体;font-size:14px"> </span></p><p><span style=";font-family:宋体;color:rgb(255,0,0);font-size:14px"><span style="font-family:宋体">注意：驱动软件请拷贝到</span><span style="font-family:Calibri">C</span><span style="font-family:宋体">盘解压。驱动软件各级目录不能出现中文字符。</span></span></p><p><span style=";font-family:宋体;font-size:14px"> </span></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:16px"><span style="font-family:Calibri">2.</span></span></strong></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">问：</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">这款</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">乐扩</span><span style="font-family:Calibri">USB2.0</span><span style="font-family:宋体">转</span><span style="font-family:Calibri">RS232/422/485</span><span style="font-family:宋体">串口线如何进行协议设置？</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：使用前必须进行协议设置，打开文件夹</span>“<span style="font-family:Calibri">21B1411/Tool</span><span style="font-family:宋体">”右键“以管理员身份运行”点击“是”按钮。在端口号中选择新增加的</span><span style="font-family:Calibri">COM3</span><span style="font-family:宋体">（修改后请选择本产品对应的端口号），协议类型：</span><span style="font-family:Calibri">1.RS-232 2.RS-485 2W</span><span style="font-family:宋体">（两线</span><span style="font-family:Calibri">RS485</span><span style="font-family:宋体">协议） </span><span style="font-family:Calibri">3.RS-422/485 4W</span><span style="font-family:宋体">（</span><span style="font-family:Calibri">RS422</span><span style="font-family:宋体">或</span><span style="font-family:Calibri">4</span><span style="font-family:宋体">线</span><span style="font-family:Calibri">RS485</span><span style="font-family:宋体">协议）。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">终端电阻：</span><span style="font-family:Calibri">RS485</span><span style="font-family:宋体">可根据现场情况设置为不使能或使能（</span><span style="font-family:Calibri">RS232</span><span style="font-family:宋体">协议设置为不使能）</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">选好后点击（应用），下面出现</span>“设置成功……”。关闭软件。即告设置完成。</span></p><p><span style=";font-family:宋体;font-size:14px"> </span></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:16px"><span style="font-family:Calibri">3.</span></span></strong></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">问：</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">这款</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">乐扩</span><span style="font-family:Calibri">USB2.0</span><span style="font-family:宋体">转</span><span style="font-family:Calibri">RS232/422/485</span><span style="font-family:宋体">串口线</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">，</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">选择</span><span style="font-family:Calibri">RS422/485</span><span style="font-family:宋体">，或者</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">RS232</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">分别该如何设置和使用？</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">如果选择</span><span style="font-family:Calibri">RS422/485</span><span style="font-family:宋体">模式请确认端口属性里</span><span style="font-family:Calibri">RS-485</span><span style="font-family:宋体">勾选上。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">如果选择</span><span style="font-family:Calibri">RS232</span><span style="font-family:宋体">即可使用直接插</span><span style="font-family:Calibri">DB9G</span><span style="font-family:宋体">头进行通讯。</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">如果选择</span><span style="font-family:Calibri">RS422/485</span><span style="font-family:宋体">可使用配备的接线转换头。也可直接</span><span style="font-family:Calibri">DB9G</span><span style="font-family:宋体">和</span><span style="font-family:Calibri">DB9M</span><span style="font-family:宋体">对接（</span><span style="font-family:Calibri">DB9M</span><span style="font-family:宋体">焊线定义</span><span style="font-family:Calibri">RS422</span><span style="font-family:宋体">：</span><span style="font-family:Calibri">1 TX- 2 TX+ 3 RX+ 4 RX- 5 GND RS485</span><span style="font-family:宋体">：</span><span style="font-family:Calibri">1 DATA- 2 DATA+ 5 GND</span><span style="font-family:宋体">）</span></span></p><p><span style=";font-family:宋体;font-size:14px"> </span></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:16px"><span style="font-family:Calibri">4.</span></span></strong></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">问：这款</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">USB2.0</span><span style="font-family:宋体">转</span><span style="font-family:Calibri">RS232/422/485</span><span style="font-family:宋体">串口线接线转换头定义</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">是什么？是否支持</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">VCC</span><span style="font-family:宋体">供电</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">？</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">接线转换头定义见丝印标识：</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">如下图</span> </span><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">1 RXD+ 2 TXD+ 3 TXD- 4 RXD- 5 GND 6 VCC</span><span style="font-family:宋体">（注意：本产品不提供</span><span style="font-family:Calibri">VCC</span><span style="font-family:宋体">供电）。</span></span></p><p><img src="/data/upload/image/20220321/1647873080981088.png" title="1647873080981088.png" alt="图片4.png"/></p><p><span style=";font-family:宋体;font-size:14px"> </span></p><p><strong><span style=";font-family:宋体;font-weight:bold;font-size:16px"><span style="font-family:Calibri">5.</span></span></strong></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">问：这款</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:Calibri">USB2.0</span><span style="font-family:宋体">转</span><span style="font-family:Calibri">RS232/422/485</span><span style="font-family:宋体">串口线</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">的指示灯分别代表什么意思？</span></span></p><p><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">答：</span></span><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">产品指示灯（</span><span style="font-family:Calibri">TXD</span><span style="font-family:宋体">）闪表示电脑端有数据传出。</span></span></p><p style="text-indent:28px"><span style=";font-family:宋体;font-size:14px"><span style="font-family:宋体">指示灯（</span><span style="font-family:Calibri">RXD</span><span style="font-family:宋体">）闪表示接的设备有数据传来。</span></span></p><p><br/></p>
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