1. 서론
This manual provides detailed instructions for the DSD TECH SH-C31A USB to CAN Adapter. The SH-C31A is a non-isolated USB to CAN adapter based on the open-source hardware project Canable 2.0, designed to facilitate communication with CAN and CAN-FD networks via a USB interface.
It features a robust design and supports both CAN and CAN-FD protocols, making it suitable for various industrial and automotive applications. The device comes with pre-installed candlelight firmware, but can be updated to slcan firmware for CAN FD functionality.
2. 패키지 내용
패키지에 모든 품목이 들어 있는지 확인하세요.
- 1 x DSD TECH SH-C31A USB to CAN Adapter
- 1 x 3PIN Terminal Block
- 1 x 사용자 가이드(이 문서)

Image: Contents of the DSD TECH SH-C31A package, showing the adapter, a 3-pin terminal block, and a user guide.
3. 제품 오버view
The DSD TECH SH-C31A is a compact USB to CAN adapter. It features a transparent casing, allowing visibility of the internal circuitry. Key components include a USB-A connector, a 3-pin terminal block for CAN bus connections, and a boot switch for mode selection.

이미지: 상세 view of the SH-C31A adapter, highlighting the CAN_L, GND, CAN_H pins, the Boot Switch (ON: DFU Mode, OFF: Work Mode), and the R120 Switch. Separate images show the front and back view장치의 s.
3.1. 핀 배치 설명
- CAN_L: CAN Low signal line.
- GND : 접지 연결.
- CAN_H: CAN High signal line.
3.2. Boot Switch
- 꺼짐 위치: Work Mode. The adapter operates with its current firmware (default is candlelight).
- ON 위치: DFU (Device Firmware Upgrade) Mode. Used for flashing new firmware to the device.
4. 설정 및 연결
Follow these steps to connect your DSD TECH SH-C31A USB to CAN Adapter:
- Connect CAN Bus Wires: Insert the CAN_H, CAN_L, and GND wires from your CAN network into the provided 3-pin terminal block. Ensure correct polarity.
- Attach Terminal Block: Securely plug the terminal block into the corresponding connector on the SH-C31A adapter.
- 컴퓨터에 연결: Plug the USB-A connector of the SH-C31A adapter into an available USB port on your desktop or laptop computer.

Image: Step-by-step visual guide showing how to connect the CAN bus wires to the removable 3-pin terminal block, and then how to insert the terminal block into the SH-C31A adapter. The terminal block is included in the package.

Image: Illustrates the process of securing the CAN bus wires into the 3-pin terminal block using a small screwdriver, ensuring a firm connection before attaching the block to the SH-C31A adapter.
5. 사용 설명서
5.1. Work Mode (Default)
In Work Mode, the Boot Switch should be in the OFF position. The adapter will operate with its currently installed firmware. By default, the SH-C31A comes with candlelight firmware, which supports standard CAN frames but not CAN FD frames.
To use the adapter in Work Mode with software like Cangroo or BUSMASTER:
- Ensure the Boot Switch is in the OFF position.
- Connect the adapter to your computer and CAN bus as described in Section 4.
- Open your preferred CAN analysis software (e.g., Cangroo, BUSMASTER).
- Configure the software to recognize the "candleLight USB to CAN adapter" or similar device under Universal Serial Bus devices.
- Initiate measurement or communication within the software.

Image: Demonstrates the SH-C31A adapter connected and recognized by Cangroo software on Windows. It shows the device listed under "Universal Serial Bus devices" and steps to start a measurement within Cangroo.
5.2. Firmware Update (DFU Mode)
If you require CAN FD functionality, you must flash the firmware to slcan firmware. This process involves putting the device into DFU Mode.
- Enter DFU Mode: Move the Boot Switch to the ON position.
- 컴퓨터에 연결: Plug the SH-C31A adapter into your computer's USB port. The device should appear as "STM Device in DFU Mode" in your device manager.
- Access Firmware Updater: Navigate to the official CANable 2.0 firmware updater web대지: https://www.canable.io/updater/canable2.html
- 펌웨어 선택: 에 website, select the desired firmware (e.g., "slcan with FD support") from the dropdown menu.
- 펌웨어 플래싱: Click "Connect and Update" and follow the on-screen prompts to flash the new firmware.
- Exit DFU Mode: After successful flashing, return the Boot Switch to the OFF position. Unplug and replug the device to start with the new firmware.

Image: Illustrates the process of flashing firmware. The SH-C31A is shown with its boot switch toggled to DFU mode, and a screenshot of the CANable 2.0 updater website is displayed, showing the selection of 'slcan with FD support' firmware.

Image: A comparative diagram showing how the SH-C31A is recognized by a computer in Work Mode (as "candleLight USB to CAN adapter") versus DFU Mode (as "STM Device in DFU Mode"), along with a summary of features for each mode.
5.3. 공식 제품 영상
Video: An official product video from DSD TECH demonstrating the SH-C31A USB to CAN Adapter, including its physical features, connection process, and basic operation with software. This video provides a visual guide to the adapter's functionality.
6. 유지관리
The DSD TECH SH-C31A USB to CAN Adapter is designed for durability and requires minimal maintenance. To ensure optimal performance and longevity:
- 기기를 깨끗하게 유지하고 먼지나 이물질이 없도록 하세요. 청소 시에는 부드럽고 마른 천을 사용하세요.
- 어댑터를 극한의 온도, 습도 또는 직사광선에 노출시키지 마세요.
- c를 열려고 시도하지 마십시오.asing or modify the internal components, as this will void the warranty.
- Ensure connections are secure but do not overtighten the terminal block screws.
7. 문제 해결
If you encounter issues with your DSD TECH SH-C31A adapter, consider the following troubleshooting steps:
- 인식되지 않는 장치:
- 어댑터가 제대로 작동하는 USB 포트에 꽂혀 있는지 확인하십시오.
- Check your computer's Device Manager to see if the device is listed (e.g., "candleLight USB to CAN adapter" or "STM Device in DFU Mode").
- 다른 USB 포트나 컴퓨터를 사용해 보십시오.
- If in DFU mode, ensure the Boot Switch is in the ON position. If in Work Mode, ensure it's OFF.
- CAN 통신 불가:
- Verify that the CAN_H, CAN_L, and GND connections are correct and secure.
- Check the CAN bus termination resistors if applicable to your network.
- Ensure your software is correctly configured for the adapter and the CAN bus parameters (e.g., baud rate).
- If using CAN FD, confirm that the slcan firmware has been successfully flashed.
- 펌웨어 업데이트 문제:
- Ensure the Boot Switch is in the ON position before connecting for DFU mode.
- 호환되는 것을 사용하세요 web browser (e.g., Chrome) for the CANable updater web대지.
- If on Linux, you may need to add a udev rule for proper device recognition. Refer to the CANable documentation for details.
For further assistance, please contact DSD TECH customer support.
8. 사양
| 특징 | 설명 |
|---|---|
| 상표 | DSD TECH |
| 모델 번호 | SH-C31A |
| 하드웨어 인터페이스 | USB |
| CAN Protocol Support | CAN, CAN FD (with slcan firmware) |
| 데이터 링크 프로토콜 | USB |
| 데이터 전송 속도 | 초당 5메가비트 |
| 호환 장치 | 데스크탑, 노트북 |
| 격리 | 비 절연 |
| 품목 무게 | 0.02 킬로그램 |
| 한국어: | 794251080989 |

Image: A comparison table detailing different DSD TECH USB CAN series adapters (SH-C30A, SH-C30G, SH-C31A, SH-C31G), showing their base CANable version, ASIN, CAN FD support, isolation status, CAN pinout, and interface type.
9. 보증 및 지원
DSD TECH provides a manufacturer warranty for 12 months from the date of purchase for the SH-C31A USB to CAN Adapter. Additionally, DSD TECH offers permanent technical support and a 1-year product replacement service.
For technical assistance, warranty claims, or product replacement inquiries, please contact DSD TECH customer support through their official web제품이 구매된 사이트 또는 플랫폼.
Further documentation, including schematics, BOM lists, and Gerb files, for this open-source hardware product is publicly available on the DSD TECH web대지.