2016年1月10日 · 在 rs-232 的通讯标准中是以一个 25 针的接口来定义的，并在早期的计算机如 pc 或 xt 机型上广 泛使用，但在 AT 机以后的机型上，实际均采用了 9 针的简化版本应用，现在所说的 232 通讯均默认为 9

2020年8月18日 · So here is a simplified version of the serial connection pinout used on personal computers: the RS-232 9 pin pinout. Pin 1: DCD ← Data Carrier Detect Pin 2: RxD ← Receive Data

目前 rs-232 是 pc 机与通信工业中应用最广泛的一种串行接口。rs-232 被定义为一种在低速率串 行通讯中增加通讯距离的单端标准。rs-232 采取不平衡传输方式，即所谓单端通讯。 s232（9针）接口

无论是rs-232c、rs-422，还是rs-485，串口接口的外形、尺寸都是相同的，部件间可以通用互换，但其引脚的定义却各不相同，因此要了解串口做线，首先... 4 条评论 您还未登录，请先 登录 后发表或查看评论

For RS-232 variants, including the common 9-pin connector, see serial port. In telecommunications, RS-232 or Recommended Standard 232 [1] is a standard originally introduced in 1960 [2] for serial communication transmission of data.

常见的 rs-232 物理连接器是 db9 （9针）和 db25 （25针）。db9 更为普遍，其中： tx（发送，pin 3） rx（接收，pin 2） gnd（地，pin 5） 其他引脚用于握手控制（如 rts/cts、dtr/dsr） 软件协议： 通过 uart（通用异步收发器）实现; 一般使用 ascii 或 modbus rtu 协议进行数据 ...

2022年6月6日 · RS-232 standard defines electrical signal characteristics (voltage levels, timing, signaling rate, short-circuit behavior, cable length), mechanical characteristics of RS-232 interface, RS-232 pinouts and connectors, plus some other details.

2018年4月8日 · New RS232 has nine pins as mentioned earlier. These nine pins are arranged in the port as shown in RS232 Connector Pinout. The DCE and DTE ports are exactly similar except for the direction of data flow. These nine pins are roughly divided in to three categories and we will discuss each category below.

Understanding RS232 Pin Configuration. Grasping the layout of the connectors used in serial communication is essential for anyone working with data transmission systems. This section delves into the arrangement and purpose of each contact point, offering a clear insight into how they contribute to the overall functionality of serial interfaces.

2024年3月21日 · RS-232 requires a minimum of 3 wires for basic communication: transmit data, receive data, and ground. What are the mandatory pins for RS232? RS-232 only needs 3 pins for basic communication: TxD (sends data), RxD (receives data), and GND (common ground).