FT232RL USB 轉 RS485 模組 , 正廠 FT232RL UART晶片 搭配 SP3485 SparkFun 原裝進口

描述

FT232RL USB 轉 RS485 模組 , 正廠 FT232RL UART晶片 搭配 SP3485 SparkFun 原裝進口

FT232RL USB 轉 RS485 模組 分線板將 SP3485 RS-485 收發器與 FT232RL USB UART IC 配對，以將 USB 流轉換為 RS-485。SP3485 是半雙工收發器，因此一次只能以一種方式進行通信，但可以達到高達 10Mbps 的傳輸速度。FT232RL 的 TXDEN 引腳連接到 SP3485 的發送和接收使能輸入端，該線用於控制 RS-485 收發器的傳輸模式。安裝正確的驅動程序後，FT232RL 將枚舉為虛擬 COM 端口；驅動程序可用於 Windows、Mac 和 Linux。

該分線板包括 SP3485、FT232、TX/RX/RTS LED、Mini-B USB 連接器、濾波電容器和原理圖上顯示的其他組件。我們已將 RS485 輸出拆分為三個不同的連接：(1) RJ-45 連接器，(2) 3 針 3.55mm 螺絲端子，以及 (3) 3 針 0.1″ 間距接頭；這些都不是輸出連接器來填充。

硬體特色與規格

• 配備SP3485 RS-485收發器和FT232RL USB UART IC
• 由 USB 電源供電
• RX、TX 和 RTS LED 指示燈
• Mini-B USB 連接器
• USB 電源和 RX/TX 線斷開到 0.1″ 間距接頭
• RS-485 輸入/輸出連接到 RJ-45 連接器、3.5mm 螺絲端子和 0.1″ 間距接頭
• 驅動器/接收器使能連接到 FT232RL 的 RTS 線
• -7V 至 +12V 共模輸入電壓範圍
• 1.55×0.9 英寸

文件與資源

• 示意圖
• 鷹文件
• SP3485 數據表
• FT232RL VCP 驅動程序
• GitHub

SparkFun USB to RS-485 Converter

This is the newest revision of this board and this breakout board pairs an SP3485 RS-485 transceiver with an FT232RL USB UART IC to convert a USB stream to RS-485. The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps.

The TXDEN pin of the FT232RL is connected to the transmit and receive enable inputs of the SP3485, this line is used to control the transmission mode of the RS-485 transceiver. With the proper drivers installed, the FT232RL will enumerate as a virtual COM port; the drivers are available for Windows, Mac and Linux.

This breakout board includes the SP3485, FT232, TX/RX/RTS LEDs, Mini-B USB connector, filter capacitors, and other components shown on the schematic. We’ve broken out the RS485 output to three different connections: (1) an RJ-45 connector, (2) a 3-pin 3.55mm screw terminal, and (3) a 3-pin 0.1″ pitch header; none of these output connectors come populated.

Features

• Fully equipped with SP3485 RS-485 transceiver and FT232RL USB UART IC
• Operates from USB supply
• RX, TX, and RTS LED indicators
• Mini-B USB connector
• USB power and RX/TX lines broken out to a 0.1″ pitch header
• RS-485 input/output broken out to RJ-45 connector, 3.5mm screw terminal, and 0.1″ pitch header
• Driver/Receiver Enable connected to RTS line of FT232RL
• -7V to +12V Common-Mode Input Voltage Range
• 1.55×0.9 inches