Algodue UPM209 Modbus register map

Three-phase DIN rail network analyzer (80 A direct, 1/5 A CT or Rogowski inputs), RS485 Modbus RTU/ASCII or Ethernet Modbus TCP

Official
424 registers
Modbus TCP and RTU
Revision 2 · 2026-10-17
Identity: firmware, serial number

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 and RTU
Unit ID: 1
TCP port: 502
Serial: 9600 8N1 · 9600 baud, 8 data bits, none parity, 1 stop bit
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: 424 holding registers
Groups: 9
Revision: 2 · 2026-10-17
Added: 2026-10-14 (2026-10-14)
File: maps/algodue/upm209.mbmap.json · 69 KB · history
SHA-256: 68973e32d8e2352654e2db9e7691db0751b17b3527300376f319b0855772396e
Manufacturer: algodue.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	Values
Serial number	Serial number	holding 8192	string[6]
Firmware	Firmware release	holding 8198	uint32 ABCD

Sources and notes

UPM209 Bedienungsanleitung (user manual) · version Ed2111
MODBUS communication protocol part (in English), section 4

Source: Algodue, "UPM209 user manual (Bedienungsanleitung)" Ed2111, part "MODBUS Communication Protocol", section 4

Algodue UPM209 network analyzer; demand, max, harmonic and some other values need the ENH version. PT settings apply to the 1/5 A CT and Rogowski versions only.
FC03 or FC04 reads, FC10 writes; big endian, high word first. Up to 127 registers per read in RTU (256 bytes in TCP), up to 29 registers per write in RTU and 1 in TCP.
Each value is also published as an integer from 0x0000 (mV, mA, mW, 0.1 Wh…); this map uses the IEEE float copies from 0x1000 in V, A, W, var, VA and Wh.
Changing the CT or PT ratio, wiring or current full scale resets min/max, demand, energy counters, digital outputs and recordings.
Digital output, recording and parameter-code settings are in the manual and not in this map.

Area	Address	Type	Access	Unit
HR	4096	float32 ABCD	R	V
HR	4098	float32 ABCD	R	V
HR	4100	float32 ABCD	R	V
HR	4102	float32 ABCD	R	V
HR	4104	float32 ABCD	R	V
HR	4106	float32 ABCD	R	V
HR	4108	float32 ABCD	R	V
HR	4110	float32 ABCD	R	A
HR	4112	float32 ABCD	R	A
HR	4114	float32 ABCD	R	A
HR	4116	float32 ABCD	R	A
HR	4118	float32 ABCD	R	A
HR	4120	float32 ABCD	R	W
HR	4122	float32 ABCD	R	W
HR	4124	float32 ABCD	R	W
HR	4126	float32 ABCD	R	W
HR	4128	float32 ABCD	R	VA
HR	4130	float32 ABCD	R	VA
HR	4132	float32 ABCD	R	VA
HR	4134	float32 ABCD	R	VA
HR	4136	float32 ABCD	R	var
HR	4138	float32 ABCD	R	var
HR	4140	float32 ABCD	R	var
HR	4142	float32 ABCD	R	var
HR	4144	float32 ABCD	R
HR	4146	float32 ABCD	R
HR	4148	float32 ABCD	R
HR	4150	float32 ABCD	R
HR	4152	float32 ABCD	R
HR	4154	float32 ABCD	R
HR	4156	float32 ABCD	R
HR	4158	float32 ABCD	R
HR	4160	float32 ABCD	R
HR	4162	float32 ABCD	R
HR	4164	float32 ABCD	R
HR	4166	float32 ABCD	R	%
HR	4168	float32 ABCD	R	%
HR	4170	float32 ABCD	R	%
HR	4172	float32 ABCD	R	%
HR	4174	float32 ABCD	R	%
HR	4176	float32 ABCD	R	%
HR	4178	float32 ABCD	R	%
HR	4180	float32 ABCD	R	%
HR	4182	float32 ABCD	R	%
HR	4184	float32 ABCD	R	%
HR	4186	float32 ABCD	R	Hz
HR	4366	float32 ABCD	R	A
HR	4368	float32 ABCD	R	A
HR	4370	float32 ABCD	R	A
HR	4372	float32 ABCD	R	A
HR	4374	float32 ABCD	R	A
HR	4376	float32 ABCD	R	W
HR	4378	float32 ABCD	R	W
HR	4380	float32 ABCD	R	W
HR	4382	float32 ABCD	R	W
HR	4384	float32 ABCD	R	W
HR	4386	float32 ABCD	R	W
HR	4388	float32 ABCD	R	W
HR	4390	float32 ABCD	R	W
HR	4392	float32 ABCD	R	W
HR	4394	float32 ABCD	R	VA
HR	4396	float32 ABCD	R	VA
HR	4398	float32 ABCD	R	VA
HR	4400	float32 ABCD	R	VA
HR	4402	float32 ABCD	R	VA
HR	4404	float32 ABCD	R	VA
HR	4406	float32 ABCD	R	VA
HR	4408	float32 ABCD	R	VA
HR	4410	float32 ABCD	R	VA
HR	4412	float32 ABCD	R	var
HR	4414	float32 ABCD	R	var
HR	4416	float32 ABCD	R	var
HR	4418	float32 ABCD	R	var
HR	4420	float32 ABCD	R	var
HR	4422	float32 ABCD	R	var
HR	4424	float32 ABCD	R	var
HR	4426	float32 ABCD	R	var
HR	4428	float32 ABCD	R	var
HR	4430	float32 ABCD	R
HR	4432	float32 ABCD	R
HR	4434	float32 ABCD	R
HR	4436	float32 ABCD	R
HR	4438	float32 ABCD	R
HR	4440	float32 ABCD	R
HR	4442	float32 ABCD	R
HR	4444	float32 ABCD	R
HR	4608	float32 ABCD	R	V
HR	4610	float32 ABCD	R	V
HR	4612	float32 ABCD	R	V
HR	4614	float32 ABCD	R	V
HR	4616	float32 ABCD	R	V
HR	4618	float32 ABCD	R	V
HR	4620	float32 ABCD	R	V
HR	4622	float32 ABCD	R	A
HR	4624	float32 ABCD	R	A
HR	4626	float32 ABCD	R	A
HR	4628	float32 ABCD	R	A
HR	4630	float32 ABCD	R	A
HR	4632	float32 ABCD	R	W
HR	4634	float32 ABCD	R	W

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).