# skypsu: reconstructing the STP2S3010E22 Modbus register map

> skypsu reconstructs the Modbus RTU register map of the SKY TOPPOWER STP2S3010E22 laboratory power supply. It provides a Python driver, read-only register scanner, local web interface and live plot. The documented map covers output control, measurements, setpoints and status flags; the author reports checking it on two units.

- Type: Case study
- Targets: Protocol
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-08
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/birlet/sky-toppower-stp2s3010e22>
- Primary source: <https://github.com/birlet/sky-toppower-stp2s3010e22/blob/77faa89849ed0110921ebefe423fe63b0c30172d/docs/PROTOCOL.md>
- Catalog page: <https://awesomerea.org/resources/skypsu-case/>
- Record JSON: <https://awesomerea.org/resources/skypsu-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/skypsu-case/index.md)

## Requirements & limits

- **Prerequisites:** Python 3.10 or newer and a SKY TOPPOWER STP2S3010E22 connected through the COM USB-C data port.
- **Prerequisites:** Linux users need access to the device's /dev/ttyUSB* serial port.
- **Limits:** Writing protection settings is disabled because those writes have not been tested.
- **License:** MIT License.

## Primary sources

1. <https://github.com/birlet/sky-toppower-stp2s3010e22/blob/77faa89849ed0110921ebefe423fe63b0c30172d/docs/PROTOCOL.md>
2. <https://github.com/birlet/sky-toppower-stp2s3010e22/blob/77faa89849ed0110921ebefe423fe63b0c30172d/README.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.