WSAL22773 – USB-CAN-B/en

Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The USB-CAN-B is an industrial USB-to-CAN adapter with two electrically isolated channels (CAN1/CAN2), integrated 3000 V DC isolation, built-in 120 Ω terminal resistors and a configurable baud rate from 10 kbps to 1 Mbps. It supports Windows and Linux as well as protocols such as CAN 2.0A/B, CANopen, SAE J1939, DeviceNet, iCAN and ISO 15765.

Related products at JW Tech

WSAL22773 – USB to CAN Adapter, Dual-Channel CAN Analyzer, Industrial Isolation

Technical overview

Two independent, fully isolated CAN channels with 3000 V DC isolation voltage.
Each channel includes two built-in 120 Ω resistors that can be enabled via switch.
Configurable baud rate: 10 kbps to 1 Mbps via software.
Transfer performance per channel: up to 8500 frames/s for both sending and receiving.
Buffers per channel: 2000 received frames, 1000 sent frames; automatic retransmission on failure.
Indicator LEDs: PWR (power), SYS (system status, lit on bus error), CAN1 and CAN2 (blink during data send/receive).
Aluminum-alloy enclosure with flame-retardant insulating sheets on both sides to protect against metal-tip discharge.
Dimensions: 104 × 70 × 25 mm; operating temperature range −40 to +85 °C.
Supported systems: Windows XP/7/8/10/11 (32/64-bit) and Linux environments such as Raspberry Pi OS, Ubuntu/Jetson Nano, and VMware.
Protocol support includes CAN 2.0A/B, CANopen, SAE J1939, DeviceNet, iCAN and ISO 15765.

Commands and examples – verify before use:

sudo apt-get install can-utils
sudo ip link set can0 up type can bitrate 1000000
candump can0
cansend can0 000#11.22.33.44
cd ~
wget https://files.waveshare.com/upload/1/1c/USB-CAN-B_Code.zip
unzip USB-CAN-B_Code.zip
sudo chmod 777 -R USB-CAN-B_Code
cd USB-CAN-B_Code/Raspberry/c/
sudo make clean
sudo make
sudo ./hello_cpp
cd USB-CAN-B_Code/Raspberry/python/
sudo python3 python3-32bit.py
cd USB-CAN-B_Code/Jetson/c
cd USB-CAN-B_Code/Jetson/python/
sudo python3 python3-64bit.py

Notes and version constraints

According to the source, Linux drivers are still under development; some features on Linux may be limited.
The described steps target specific hardware platforms (Raspberry Pi 4B, Jetson); portability to other boards must be verified individually.
LabVIEW applications require the 'Run Engine' module during tool installation; without it, integration may fail.
Relay mode invalidates baud-rate settings; only send/receive and intelligent filtering remain available.
When sending a file, the file format must match the real-time storage format or the send will be rejected.
Detailed tool operation is documented in the separate user manual; this summary does not replace the full documentation.

Source and revision record

USB-CAN-B - Waveshare Wiki
Source revision: 100250
Captured: 2026-09-03T04:22:41+00:00
SHA-256: bf05e2a567e2ac844f769f8141a82fdb5021c2682041fc01974b92ab8df6fbbf