Unipi Technology UniPi Lite Modbus register map
Unipi Lite controller: 6 digital inputs, 6 relay outputs
- Official
- 30 registers
- Revision 3 · 2026-11-10
Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.
Communication
- Protocol
- Modbus TCP and RTUdefault
- Unit ID
- 1default
- TCP port
- 502default
- Serial
- 9600 8E1 · 9600 baud, 8 data bits, even parity, 1 stop bit defaults
- Byte / word order
- ABCD · bytes big-endian, words high first
- Addresses
- 0-based
Connection values are defaults: the device may be configured differently.
Map
- Registers
- 24 holding registers, 6 coils
- Groups
- 4
- Revision
- 3 · 2026-11-10
- Added
- ()
- File
- maps/unipi/unipi-lite.mbmap.json · 5 KB · history
- SHA-256
- 07f234dd602164bea0ec5e595d6a262397b0a8c27738182285b7001671e34e21
- Manufacturer
- www.unipi.technology
Sources and notes
- Unipi Lite Modbus map (unipi-lite-modbus-map.xlsx) Sheets Registers, Coils and Description; listed on https://kb.unipi.technology/en:hw:04-extensions:downloads
Source: unipi-lite-modbus-map.xlsx, Unipi knowledge base page https://kb.unipi.technology/en:hw:04-extensions:downloads
- Configuration is not permanently saved: the Description sheet states it is set on each power-on. Defaults: counters 0, debounce 0 ms, outputs OFF.
- Multi-register values (counters, floats) are taken as big-endian (most significant register first), as in the other Unipi maps; the spreadsheet only says bit 0 is the LSB and bit 15 the MSB.
- The spreadsheet does not state the transport or default unit id, so the format defaults (tcp+rtu, unit 1) are kept.
- Coils repeat the relay outputs that also appear as bits of holding register 1.
| Area | Address | Name | Type | Access | Unit | Scale | Description |
|---|---|---|---|---|---|---|---|
| HR | 0 | bool bit 0 | R | ||||
| HR | 0 | bool bit 1 | R | ||||
| HR | 0 | bool bit 2 | R | ||||
| HR | 0 | bool bit 3 | R | ||||
| HR | 0 | bool bit 4 | R | ||||
| HR | 0 | bool bit 5 | R | ||||
| HR | 1 | bool bit 0 | RW | ||||
| HR | 1 | bool bit 1 | RW | ||||
| HR | 1 | bool bit 2 | RW | ||||
| HR | 1 | bool bit 3 | RW | ||||
| HR | 1 | bool bit 4 | RW | ||||
| HR | 1 | bool bit 5 | RW | ||||
| HR | 2 | uint32 ABCD | RW | ||||
| HR | 4 | uint32 ABCD | RW | ||||
| HR | 6 | uint32 ABCD | RW | ||||
| HR | 8 | uint32 ABCD | RW | ||||
| HR | 10 | uint32 ABCD | RW | ||||
| HR | 12 | uint32 ABCD | RW | ||||
| HR | 1010 | uint16 | RW | µs | ×100 | ||
| HR | 1011 | uint16 | RW | µs | ×100 | ||
| HR | 1012 | uint16 | RW | µs | ×100 | ||
| HR | 1013 | uint16 | RW | µs | ×100 | ||
| HR | 1014 | uint16 | RW | µs | ×100 | ||
| HR | 1015 | uint16 | RW | µs | ×100 | ||
| CO | 0 | bool | RW | ||||
| CO | 1 | bool | RW | ||||
| CO | 2 | bool | RW | ||||
| CO | 3 | bool | RW | ||||
| CO | 4 | bool | RW | ||||
| CO | 5 | bool | RW |
No registers match
Try part of the name, an address (decimal or 0x hex) or clear the filters.
Help improve this map
- I tested it on a deviceReport whether it worked, even if you did not write the map.
- Suggest a correctionEdit the file on GitHub; it opens a pull request.
- Report a problemA wrong address, type, scale or byte order.
- Read the formatWhat each key of the file means (SPEC.md).