MBMap Registry
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  3. PLA44

BMR PLA44 Modbus register map

Power quality analyser with four voltage and current inputs (RS485)

  • Official
  • 6,141 registers
  • Modbus RTU
  • Revision 3 · 2026-10-18
  • 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 RTU
Unit ID
1default
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
6141 holding registers
Groups
32
Translation tables
2
Revision
3 · 2026-10-18
Firmware
from 2.0.63
Added
()
File
maps/bmr/pla44.mbmap.json · 916 KB · history
SHA-256
d1eb498ab8950e6f1147fd123c22dcbfcdcad76476b3961b7d2dbfabd41d5837
Manufacturer
bmr-trading.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
Firmware Firmware major holding 36000 uint16 bits 8–15
Firmware Firmware minor holding 36000 uint16 bits 0–7
Firmware Firmware patch holding 36001 uint16 bits 8–15
Firmware Firmware build holding 36001 uint16 bits 0–7
Serial number Serial number holding 36068 string[4]

Sources and notes

  • PLA44 Modbus registers · version 1.8

Source: BMR, "PLA44 Modbus registers", version 1.8, firmware 2.0.63 and newer

  • BMR PLA44, firmware 2.0.63 and newer. The device reads with FC03 and writes with FC16.
  • Addresses are written as in the manual, from 0. The manual does not list the RS485 defaults.
  • Registers 40001-40433 repeat most online values of 26000-26335 at odd addresses, and 58000-58417 most averages of 54000-54335; this map keeps only the values those blocks add (split by consumption and supply).
  • Harmonics are given twice: in volts, amperes, watts or vars from 20000, and in percent from 40481.
  • Energy counters are int64 in tenths of kWh or kvarh (55000-55023), and repeated as float32 (55024-55035).
  • The manual does not say from when the times of the maximums and minimums are counted.
AreaAddressNameTypeAccessUnitScaleDescription
HR 36000 uint16 bits 8–15 R
HR 36000 uint16 bits 0–7 R
HR 36001 uint16 bits 8–15 R
HR 36001 uint16 bits 0–7 R
HR 36002 string[10] R
HR 36012 string[20] R Set by the user
HR 36066 uint16 bits 8–15 R
HR 36066 uint16 bits 0–7 R
HR 36067 uint16 bits 8–15 R
HR 36067 uint16 bits 0–7 R
HR 36068 string[4] R
HR 26000 float32 ABCD R V
HR 26002 float32 ABCD R V
HR 26004 float32 ABCD R V
HR 26006 float32 ABCD R V
HR 26008 float32 ABCD R V
HR 26010 float32 ABCD R V
HR 26012 float32 ABCD R V
HR 26016 float32 ABCD R %
HR 26018 float32 ABCD R %
HR 26020 float32 ABCD R %
HR 26022 float32 ABCD R %
HR 26024 float32 ABCD R %
HR 26026 float32 ABCD R %
HR 26028 float32 ABCD R %
HR 26032 float32 ABCD R A
HR 26034 float32 ABCD R A
HR 26036 float32 ABCD R A
HR 26038 float32 ABCD R A
HR 26040 float32 ABCD R %
HR 26042 float32 ABCD R %
HR 26044 float32 ABCD R %
HR 26046 float32 ABCD R %
HR 26048 float32 ABCD R
HR 26050 float32 ABCD R
HR 26052 float32 ABCD R
HR 26054 float32 ABCD R
HR 26056 float32 ABCD R
HR 26058 float32 ABCD R
HR 26060 float32 ABCD R
HR 26062 float32 ABCD R
HR 26064 float32 ABCD R
HR 26072 float32 ABCD R
HR 26080 float32 ABCD R Hz
HR 26088 float32 ABCD R W
HR 26090 float32 ABCD R W
HR 26092 float32 ABCD R W
HR 26094 float32 ABCD R W
HR 26096 float32 ABCD R VA
HR 26098 float32 ABCD R VA
HR 26100 float32 ABCD R VA
HR 26102 float32 ABCD R VA
HR 26104 float32 ABCD R var
HR 26106 float32 ABCD R var
HR 26108 float32 ABCD R var
HR 26110 float32 ABCD R var
HR 26112 float32 ABCD R W
HR 26120 float32 ABCD R VA
HR 26128 float32 ABCD R var
HR 26136 float32 ABCD R W
HR 26144 float32 ABCD R VA
HR 26152 float32 ABCD R var
HR 26160 float32 ABCD R V
HR 26162 float32 ABCD R V
HR 26164 float32 ABCD R V
HR 26166 float32 ABCD R V
HR 26168 float32 ABCD R V
HR 26170 float32 ABCD R V
HR 26172 float32 ABCD R V
HR 26174 float32 ABCD R V
HR 26176 float32 ABCD R V
HR 26178 float32 ABCD R V
HR 26180 float32 ABCD R V
HR 26184 float32 ABCD R V
HR 26186 float32 ABCD R V
HR 26188 float32 ABCD R V
HR 26192 float32 ABCD R %
HR 26194 float32 ABCD R %
HR 26196 float32 ABCD R %
HR 26198 float32 ABCD R %
HR 26200 float32 ABCD R %
HR 26202 float32 ABCD R %
HR 26204 float32 ABCD R %
HR 26206 float32 ABCD R %
HR 26208 float32 ABCD R V
HR 26210 float32 ABCD R V
HR 26212 float32 ABCD R V
HR 26214 float32 ABCD R V
HR 26216 float32 ABCD R
HR 26218 float32 ABCD R
HR 26220 float32 ABCD R
HR 26222 float32 ABCD R
HR 26224 float32 ABCD R
HR 26226 float32 ABCD R
HR 26228 float32 ABCD R
HR 26230 float32 ABCD R
HR 26232 float32 ABCD R
HR 26234 float32 ABCD R
HR 26236 float32 ABCD R
HR 26238 float32 ABCD R

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