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Belimo Modbus register maps

Updated 28 October 2026

4 Belimo models, 174 registers in all, each re-typed from Belimo’s own free documentation and checked against it.

• Actuator / valve (pressure-independent characterised control valve)

  Belimo 2-way EPIV DN 15-50 (Version 4.2) Modbus RTU

  Belimo 2-way EPIV DN 15-50 Version 4 (EP..R2+(K)BAC) on Modbus RTU, per interface description edition 2025-09 / V4.2.

  47 registers · 18 writable · RTU
  Also known as: EP..R2+BAC, EP..R2+KBAC, Electronic pressure-independent valve
• Actuator / valve (6-way pressure-independent change-over valve)

  Belimo 6-way EPIV Modbus RTU (EP..R-R6+BAC)

  Belimo 6-way EPIV EP..R-R6+BAC on Modbus RTU, per 6-way EPIV Modbus Register en-gb 2024-01 (general notes dated 16.12.2019).

  25 registers · 7 writable · RTU
  Also known as: EP..R-R6+BAC, 6-way pressure-independent valve
• Actuator / valve (damper and valve actuator)

  Belimo Air/water actuators with Modbus RTU (..24A-MOD)

  Belimo ..M(C)24A-MOD, ..R24A-MOD, ..V(K)24A-MOD, ..F24A-MOD, ..RF24A-MOD and ..H24A-MOD air/water actuators, per Modbus interface description edition 2026-05 / V3.08.

  22 registers · 11 writable · RTU
  Also known as: LM24A-MOD, NM24A-MOD, SM24A-MOD, GM24A-MOD, LMC24A-MOD, NMC24A-MOD, NR24A-MOD, LR24A-MOD, NV24A-MOD, NVK24A-MOD, LF24A-MOD, NF24A-MOD, NRF24A-MOD, LRF24A-MOD, LH24A-MOD, SH24A-MOD
• Actuator / valve (pressure-independent control valve with energy metering)

  Belimo Energy Valve DN 15-50 (Version 4) Modbus RTU / TCP

  Belimo Energy Valve Version 4, DN 15-50 (EV..R2+(K)BAC, EV..R2+MID, EV..R3+BAC), per Energy Valve Modbus interface description en-gb 2023-08.

  80 registers · 30 writable · RTU/TCP
  Also known as: EV..R2+BAC, EV..R2+KBAC, EV..R2+MID, EV..R3+BAC, Energy Valve 4

Belimo: default communication settings

Factory defaults as the manufacturer documents them. Change one setting at a time on site and write down what you changed. Word order applies to 32-bit values; the addressing column says how the manufacturer prints register numbers (every map on this site also gives the 0-based wire address).