Powerside PQube 3 Modbus register map

Also covers PQube 3e, PQube 3v, PQube 3rs

Power quality analyser. Classic bank plus the main values of the voltage, current and power banks.

Official
193 registers
Modbus TCP
Revision 1 · 2026-10-21
Identity: firmware

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.

Download .mbmap.json Raw JSON View on GitHub Suggest a correction Report a problem

Communication

Protocol: Modbus TCP
Unit ID: 1
TCP port: 502
Byte / word order: ABCD · bytes big-endian, words high first
Addresses: 0-based
Max read: 125 registers per request

Connection values are defaults: the device may be configured differently.

Map

Registers: 193 holding registers
Groups: 7
Translation tables: 2
Revision: 1 · 2026-10-21
Added: 2026-10-21 (2026-10-21)
File: maps/powerside/pqube-3.mbmap.json · 28 KB · history
SHA-256: 8d8210a90a5de2cf6d9f65f87621cebcfac0206d4aa6808cdad1af409481d9d9
Manufacturer: powerside.com

Device identity

What a tool can read to check that this map fits the connected device (SPEC.md section 4.7). Registers with a role are read like any other register.

Registers
Role	Register	Address	Type
Firmware	Firmware major	holding 29672	uint16
Firmware	Firmware minor	holding 29673	uint16
Firmware	Firmware bug fix	holding 29674	uint16

Sources and notes

PQube 3 Modbus Reference Manual · version 1.11
tables 3.1 to 3.4

Every address is the manual's register offset plus the Modbus base address, which is 0x7000 (28672) by default. If the base was changed in setup.ini, subtract 0x7000 from the addresses here and add the new base.
The manual treats FC03 and FC04 as the same: every register reads the same either way, so they are listed as holding registers. There are no coils or discrete inputs.
A 32-bit float spans two registers. The manual gives the byte order of such values as a setup.ini option (big endian by default), which is word_order here.
Registers refresh at about 2 Hz. The device accepts up to about 10 simultaneous TCP clients.
The manual lists many more registers (harmonics up to the 50th, interharmonics, scope and HF values, analog bank at 0x6000) that are not included here. The Classic bank is kept for compatibility with the PQube Classic; the voltage, current and power banks repeat many of its values.
Not tested on a device.

Area	Address	Type	Access	Unit	Description
HR	28672	float32 ABCD	R	V
HR	28674	float32 ABCD	R	V
HR	28676	float32 ABCD	R	V
HR	28678	float32 ABCD	R	V
HR	28680	float32 ABCD	R	V
HR	28682	float32 ABCD	R	V
HR	28684	float32 ABCD	R	V
HR	28686	float32 ABCD	R	V
HR	28688	float32 ABCD	R	V
HR	28690	float32 ABCD	R	V
HR	28692	float32 ABCD	R	V
HR	28694	float32 ABCD	R	V
HR	28696	float32 ABCD	R	V
HR	28698	float32 ABCD	R	Hz
HR	28700	float32 ABCD	R	A
HR	28702	float32 ABCD	R	A
HR	28704	float32 ABCD	R	A
HR	28706	float32 ABCD	R	A
HR	28708	float32 ABCD	R	W
HR	28710	float32 ABCD	R	VA
HR	28712	float32 ABCD	R		Usually 0 or 1; a fractional value is a duty cycle
HR	28714	float32 ABCD	R	A
HR	28716	float32 ABCD	R	A
HR	28718	float32 ABCD	R	A
HR	28720	float32 ABCD	R	W
HR	28722	float32 ABCD	R	W
HR	28724	float32 ABCD	R	W
HR	28726	float32 ABCD	R	VA
HR	28728	float32 ABCD	R	VA
HR	28730	float32 ABCD	R	VA
HR	28732	float32 ABCD	R	Wh
HR	28734	float32 ABCD	R	VAh
HR	28736	float32 ABCD	R	%
HR	28738	float32 ABCD	R	%
HR	28740	float32 ABCD	R	%
HR	28742	float32 ABCD	R	%
HR	28752	float32 ABCD	R	var
HR	28754	float32 ABCD	R
HR	28756	float32 ABCD	R	°C
HR	28758	float32 ABCD	R	%RH
HR	28760	float32 ABCD	R	°C
HR	28762	float32 ABCD	R	%RH
HR	28768	float32 ABCD	R	A
HR	28750	uint16	R		New events since the last poll; cleared by reading
HR	28751	uint16	R		New trends since the last poll; cleared by reading
HR	28770	float32 ABCD	R	V
HR	28772	float32 ABCD	R	°
HR	28774	float32 ABCD	R	V
HR	28776	float32 ABCD	R	°
HR	28778	float32 ABCD	R	V
HR	28780	float32 ABCD	R	°
HR	28782	float32 ABCD	R	A
HR	28784	float32 ABCD	R	°
HR	28786	float32 ABCD	R	A
HR	28788	float32 ABCD	R	°
HR	28790	float32 ABCD	R	A
HR	28792	float32 ABCD	R	°
HR	28806	uint16	R
HR	28807	uint16	R
HR	28808	uint16	R
HR	28809	uint16	R
HR	28810	uint16	R
HR	28811	uint16	R
HR	28812	float32 ABCD	R	h
HR	28846	float32 ABCD	R	%
HR	28848	float32 ABCD	R	%
HR	28850	float32 ABCD	R	%
HR	28852	float32 ABCD	R	%
HR	28854	float32 ABCD	R	W
HR	28856	float32 ABCD	R	Wh
HR	28864	float32 ABCD	R	%
HR	28866	float32 ABCD	R	%
HR	28868	float32 ABCD	R	%
HR	28870	float32 ABCD	R	%
HR	28872	float32 ABCD	R	%
HR	28874	float32 ABCD	R	%
HR	28876	float32 ABCD	R	W
HR	28878	float32 ABCD	R	W
HR	28880	float32 ABCD	R	W
HR	28882	float32 ABCD	R	VA
HR	28884	float32 ABCD	R	VA
HR	28886	float32 ABCD	R	VA
HR	28888	float32 ABCD	R	var
HR	28890	float32 ABCD	R	var
HR	28892	float32 ABCD	R	var
HR	28894	float32 ABCD	R
HR	28896	float32 ABCD	R
HR	28898	float32 ABCD	R
HR	28912	float32 ABCD	R	varh
HR	29672	uint16	R
HR	29673	uint16	R
HR	29674	uint16	R
HR	29694	uint16	R
HR	29695	uint16	R
HR	29696	uint16	R	min	Averaging period N used by the N-minute peak values
HR	30672	float32 ABCD	R	V
HR	30674	float32 ABCD	R	V
HR	30676	float32 ABCD	R	V
HR	30678	float32 ABCD	R	V
HR	30680	float32 ABCD	R	V

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).