linker-bot / linker-bot/linkerhand-python-sdk
Modbus Read Failed (Addr=30, Count=6)
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- Dominant language
- Python
- Stars
- 49
- Forks
- 19
- PR merge metrics
- No merged PRs in 30d
Description
[Hand-Left] 开始初始化左灵巧手...
[Wait] 等待设备出现: /dev/ttyUSB0 (timeout=10s)
[Wait] 设备已出现: /dev/ttyUSB0
[Hand-Left] 第 1/5 次初始化...
2026-03-30 13:57:40 Current SDK version: 3.1.0
[13:57:40] INFO Connecting to Modbus RTU on /dev/ttyUSB0...
[13:57:40] INFO Connection successful.
[Hand-Left] 初始化失败，第 1/5 次: Modbus Read Failed (Addr=30, Count=6): Modbus Error: [Input/Output] Modbus Error: [Invalid Message] No response received, expected at least 4 bytes (0 received)
当我尝试在机器人上用机械手时，总是出现该问题，有时重新插拔一下usb会好，有时又不会，这是什么问题呢，我的usb转typec是刚买的绿联的应该不会有问题。
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the initialization path that connects to Modbus RTU on /dev/ttyUSB0 and reads address 30 with count 6. Reproduce the failure on the robot while checking whether reconnecting the USB-to-Type-C adapter changes the result. Done means identifying whether the SDK, serial connection, adapter, or device causes the missing response and documenting a reliable resolution.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- embedded-iot
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100