1. Introduction
This manual provides essential information for the safe and effective use of your IUPAI USBCAN-I or USBCAN-I Plus Industrial Intelligent USBCAN Analyzer. Please read this manual thoroughly before operating the device and keep it for future reference.
The USBCAN-I and USBCAN-I Plus are professional CAN-bus tools designed for industrial applications, offering a single isolated CAN channel for reliable data analysis and communication.
2. Warning & Safety Information
- Age Restriction: This product is not suitable for children under 14 years old.
- Electronic Device: This product is an electronic device. Do not disassemble it without proper authorization.
- Rated Limits: Do not exceed the rated voltage/current during use to prevent damage or burning.
- Electrostatic Discharge (ESD): Operate electrostatic sensitive devices in an anti-static environment to prevent damage.
- Environmental Conditions: Avoid humid, high temperature, and corrosive environments.
- Abnormal Operation: If you observe abnormal heat or smoke, immediately cut off the power supply and inspect the device.
- Liquid Contact: Do not soak or wash the device.
- Child Safety: Keep the device out of the reach of children.
3. Setup Instructions
- Unpacking Inspection: After unpacking, check the contents to ensure all components are complete and undamaged.
- Power Off Circuit: Before making any connections, ensure that the circuit you are connecting to is powered off.
- Correct Polarity: Verify that the positive and negative poles of the connection are correctly matched before powering on.
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Connect to Computer: Connect the USBCAN analyzer to your computer using a standard USB B-type cable. The device is compatible with USB 1.1, USB 2.0, and USB 3.0 protocols.
Figure 1: USBCAN-I Plus connected to a laptop for operation. 
Figure 2: USBCAN-I connected to a laptop, showing the CAN, ERR, and PWR indicator lights. -
CAN Bus Connection: Connect the CAN-bus lines to the OPEN5 open terminal on the device. Ensure correct CANL, CANH, RES+, RES-, and GND connections as per your CAN network requirements. The device has an integrated 120 ohm terminal resistance, which can be enabled via an external short circuit jumper if needed.
Figure 3: Close-up view of the USBCAN-I device, highlighting the CANL, CANH, RES+, RES-, and GND terminals. 
Figure 4: Close-up view of the USBCAN-I Plus device, showing the CANL, CANH, RES+, RES-, and GND terminals, along with the USB B-type port. - Driver Installation: Install the necessary drivers for your operating system (Windows, Linux, or Android). Refer to the provided software package or manufacturer's website for driver downloads.
- Software Setup: Utilize the provided secondary development routines (VC, VB, Delphi, C#, Labview, Linux, Android) to integrate the analyzer into your application or use the manufacturer's dedicated software for CAN bus analysis.
4. Operation
Once the device is properly set up and connected, you can begin operating it for CAN bus analysis. The device supports CAN2.0A/B and conforms to ISO11898 specifications, with baud rates from 5Kbps to 1Mbps, including non-standard baud rates.
4.1. Supported Operating Systems
- Windows (XP/7/8/10)
- Linux (2.6 for USBCAN-I, 4.x for USBCAN-I Plus)
- Android (USB OTG, supported by USBCAN-I Plus)
4.2. Data Flow and Features
- USBCAN-I: Data processing speed of 3000 frames/s. No password protection or offline sending.
- USBCAN-I Plus: Higher data processing speed of 8800 frames/s. Supports password protection and offline sending.
Refer to your specific software application for detailed instructions on configuring baud rates, filtering, and analyzing CAN bus data.
5. Maintenance and Precautions
- Cleaning: Keep the device clean and free from dust. Use a dry, soft cloth for cleaning. Do not use liquid cleaners or immerse the device in water.
- Storage: Store the device in a dry place, away from extreme temperatures (-55 ℃ to +85 ℃ recommended storage temperature) and corrosive substances.
- Handling: Handle the device with care to avoid physical damage.
- Power Supply: Ensure the device is powered correctly via USB or an external DC5V power supply.
6. Troubleshooting
6.1. Frequently Asked Questions
- Q: What if there are scratches on the product?
A: You can contact the seller for assistance. - Q: What if the product cannot be used?
A: You can contact the seller for support and troubleshooting guidance.
6.2. General Troubleshooting Tips
- No Power/Indicator Lights Off: Check the USB connection to your computer or the external DC5V power supply. Ensure the cable is securely connected.
- Connection Issues: Verify all CAN bus connections (CANL, CANH, GND) are correct and secure. Ensure the CAN bus is powered.
- Software Not Detecting Device: Reinstall the device drivers. Check your operating system's device manager to ensure the device is recognized. Try a different USB port or computer.
- Data Transmission Errors: Confirm the CAN baud rate settings in your software match the CAN network's baud rate. Check for proper termination resistance (120 ohm) on the CAN bus.
7. Specifications
7.1. General Characteristics
- CAN Channels: 1 (isolated)
- USB Interface: USB2.0, USB3.0 compatible with USB1.1 protocol
- CAN Compatibility: CAN2.0A/B, conforms to ISO11898 specification
- CAN Baud Rate: 5Kbps~1Mbps (arbitrary and non-standard settings supported)
- Secondary Development: Routines for VC, VB, Delphi, C#, Labview, Linux, Android
7.2. Environmental Conditions
- Working Temperature: -40 ℃ ~ +80 ℃
- Storage Temperature: -55 ℃ ~ +85 ℃
7.3. Electrical Parameters
- CAN Isolation Voltage: 2500Vrms (electrical isolation)
- ESD Immunity: Contact discharge 16kV, Air discharge 30kV
- Power Supply: USB power or external DC5V
- CAN Interface Type: OPEN5 open terminal
- USB Interface Type: USB B-type seat
- Terminal Resistance: Integrated 120 ohm board, external short circuit jumper enabled
- Power Consumption: 0.6W
7.4. Product Specific Parameters
| Feature | USBCAN-I | USBCAN-I Plus |
|---|---|---|
| Number of CAN channels | 1 | 1 |
| Data processing speed | 3000 frames/s | 8800 frames/s |
| Windows Support | XP/7/8/10 | XP/7/8/10 |
| Linux Support | 2.6 | 4.x |
| Android Support | None | Support |
| Bluetooth | None | None |
| Isolation voltage | 2500Vrms | 2500Vrms |
| ESD level | 16KV/30kV | 16KV/30kV |
| Password protection | None | Support |
| Offline sending | None | Support |
| Power supply | USB | USB |
7.5. Dimensions
- Length: 110 mm
- Width: 55 mm
- Height (device body): 23 mm
- Height (with terminals): 25 mm
- Terminal Width: 10 mm
8. User Tips
No specific user tips were available from reviews or Q&A for this product at this time. Always refer to the official documentation and support resources for best practices.
9. Warranty and Support
For warranty information, technical support, or any issues not covered in this manual, please contact the seller directly. The seller can provide assistance with product functionality, troubleshooting, and any potential defects.
An additional user manual in PDF format is available for download: View User Manual (PDF).