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  3. UPM309

Algodue UPM309 Modbus register map

Three-phase panel network analyzer (1/5 A CT or Rogowski inputs), RS485 Modbus RTU or Ethernet Modbus TCP

  • Official
  • 426 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
426 holding registers
Groups
9
Revision
2 · 2026-10-17
Added
()
File
maps/algodue/upm309.mbmap.json · 69 KB · history
SHA-256
b2705cdd7ae6c90a42d7d8c2723cd4a0b9aef035313d768484a72309a0935740
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
RoleRegisterAddressTypeValues
Serial number Serial number holding 8192 string[6]
Firmware Firmware release holding 8198 uint32 ABCD

Sources and notes

  • UPM309 User manual · version Ed2111
    MODBUS communication protocol, section 4 (register tables)

Source: Algodue, "UPM309 User manual" Ed2111, part "MODBUS Communication Protocol", section 4

  • Algodue UPM309 network analyzer; demand, max, harmonic and some other values need the ENH version.
  • 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.
AreaAddressNameTypeAccessUnitScaleDescription
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

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