USB to 485 converter
TVS transient stop protection
Super cost-effective products
There are PL2303 chip, and ch340 chip for small and portable selection, easy to use usb straight 485, one step in place
It is recommended that the computer operating system chooses the ch340 chip for the customer of win8 or win10 system, and the driver of the ch340 is relatively well installed.
PL2303 models and individual customer feedback win8 and win10 system drivers are not easy to install,
Therefore, we cannot guarantee that all customers can install the win10 system driver.
Most customer feedback can be installed with the driver wizard. Very stable.
Size: length x width x height: 70x27x 12mm
Interface protection: TVS transient suppression protection, PL2303 chip
Chip solution: pl2303 chip & ch340 chip
Baud rate: maximum baud rate 115200
Power supply: USB directly takes power without external power supply, stable performance
RS-485 signal: A+, B-, GND
Transmission distance: theoretically up to 1200m, but the actual environment has various interferences that do not reach the ideal value, and the actual environmental test is required.
Communication protocol: pure hardware device, not subject to agreement
Working mode: Universal usb to 485 converter, support any 485 device
Operating environment: -40 ° C to 85 ° C, relative humidity of 5% to 95%
Additional features: 5v debugging power supply
Support system: Support Win98, 2000, XP/Vista/Win7/8/Linux and other systems
USB to 485 interface converter (RJ201T2) is an intelligent universal interchanging converter that converts USB signals into RS485 signals.
This product is designed in accordance with general-grade standards. The transient suppression protection function prevents the internal chip from being damaged due to level incompatibility, has anti-lightning strike, and anti-static shock, and is limited in slope driving, effectively suppressing interference. Solve the superposition of the valid signal and the invalid signal on the transmission circuit. The error-free data transmission rate is up to 115200bit.
Driver installation instructions
1, install the driver:
Open the driver folder and find the driver for the corresponding operating system. Click exe to install the file. When the driver is successfully installed, insert RJ201T2, the system will be a virtual serial port (such as: COM5 can be viewed in the device manager); Note: If the virtual serial port number is greater than 7, please use 1-7, the port will be affected stability.
2, set the com port:
Set the virtual serial port number to the corresponding location of the software. For example, set to the com port of the serial debugging software;
3. Connect the hardware line according to the following table; send data, the indicator light flashes during communication, and the usb converter works normally;
View driver installation
Open My Computer - Control Panel - Device Manager - Port, as shown below:
2. After the driver is successfully installed, a com port will be virtualized, and the corresponding com port communication will be selected in the control software of the 485 device. .
3. If an exclamation point appears, the driver is not installed successfully. You need to uninstall the original driver (right-click uninstall or drive folder will also have the uninstall file, double-click to uninstall), restart the computer and install.
The reason for the unsuccessful installation:
It may be a driver version error or an operation error. Please download the driver for the corresponding system.
4. After the driver is installed, a com port will be virtualized in the device manager port. If the com port number is greater than or equal to 7, please change the com port number to less than 7.
Open Device Manager - Port - com port right - Properties - Port Settings - Advanced to 1-6.
Product port definition and wiring:
5p binding post / port identification / description
1: VCC debugging product VCC (5V)
2 : GND Debug product GND
Wiring needs to be supplied to the products being debugged. Other time slots can be left empty.
3 : GND2 485 device GND
4 : A 485 device A (D+ )
5 : B 485 device B (D-)
If the 485 device has a better ground wire connection, the terminal can be empty if there is no ground wire.