Onboard Original FT232RL And SP485EEN Chips, Providing Better Stability And Compatibility

• Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
• Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption

The USB Signal Can Be Converted Into A Balanced Differential RS485/422 Signal And The Transmission Rate Is Stable. The Transmission Distance Is About 1.2km For RS485/422, And About 5 Meters For USB.

Supports Mac, Linux, Android, WinCE, Win11/10/8.1/8/7/XP, Etc.

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WIKI: www.waveshare.com/wiki/USB_TO_RS485/422

* Resources for different product may vary, please check the wiki page to confirm the actually provided resources.

ce Introduction

120R Matching Resistor Setting Description

Description: The RS422 and RS485 interfaces of this product also have a built-in 120R enabling resistor, which is enabled by default, and the user can remove the case to modify the settings as needed.
Modification method: Modify the yellow jumper cap at the red frame.

Dimensions

Software Installation

USB Driver Installation

• The first method: download the driver wizard from the Internet, and automatically detect and install the driver.
• The second method: Manually install the driver (the following uses WIN7 installation as an example).
• Connect the device to the computer via a USB cable, and check the device manager, the serial port number has a yellow exclamation mark, indicating that the driver is not installed.

• You can download the software installation package on the official website WIKI, (There must be a path here) Double-click 

• Click Extract:

• Click Next:

• Check I accept this agreement (A), and then click Next:

• Click Finish, and check the computer device manager at this time, you can see that the port number is already available for normal use.

Hardware Test

Test environment: PC (Windows system)
Required accessories:

• USB TO RS485/422 x 2pcs
• Adapter cable

RS485 test

• Connect the RS485 interface of the USB TO RS485/422 module, that is, connect TA-->TA to TB-->TB. The hardware connection diagram is as follows:

Note: The RS485 interface of this product also has a built-in 120R enabling resistor, which is turned on by default. Users can remove the case to modify the settings according to their needs. If signal isolation is required, PE can also be connected to the ground.

• Open two SSCOM serial port debugging assistants on the computer, open the corresponding port number, set the same baud rate, and click Send at regular intervals to receive and send normally. The test results are shown in the figure below:

RS422 Test

• Connect two sets of USB TO RS485/422 together for communication. When the RS422 interface is connected, cross-connection is required, as shown in the figure below:

Note: The RS485 interface of this product also has a built-in 120R enabling resistor, which is turned on by default. Users can remove the case to modify the settings according to their needs. If signal isolation is required, PE can also be connected to the ground.

• On the PC, open two SSCOM, open the corresponding port number, set the same baud rate, and click Send at regular intervals to send and receive normally. The screenshot of the software is as shown below:

Resource

Software

• VCP Driver (or download from FTDI official website):
  • FT232 Driver-Windows-32bit
  • FT232 Driver-Windows-64bit
  • MAC FT232 Driver-MAC-64bit
• Sscom Windows
• Sscom Android
• Putty.zip

Datasheet

• DS_FT232RN.pdf
• FT232R.pdf
• SP481E SP485E.pdf