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Generator controllers Modbus register maps

Updated 28 October 2026

7 generator controllers register maps from 4 manufacturers: ComAp, Datakom, SmartGen, Woodward.

• Generator controller

  ComAp InteliGen4 200

  InteliGen4 200 with firmware 2.2.0: the fixed (reserved) registers only; measurement registers depend on the configuration.

  10 registers · 7 writable · RTU/TCP
  Also known as: InteliGen 4 200, IG4 200
• Generator controller

  Datakom D-300 / D-500 / D-700 genset controllers

  Datakom D-300, D-500 and D-700 controllers, Modbus application manual V5.6 (firmware 5.6 era).

  29 registers · 1 writable · RTU/TCP
  Also known as: D-300, D-500, D-700, D300, D500, D700
• Generator controller

  SmartGen HGM4010N / HGM4020N

  HGM4010N (auto start) and HGM4020N (AMF) genset controllers, HGM4000N communication protocol v1.2.

  150 registers · 7 writable · RTU
  Also known as: HGM4010N, HGM4000N
• Generator controller

  SmartGen HGM6100N / HGM6100CAN Series

  HGM6100N and HGM6100CAN genset controllers (HGM6110 auto-start and HGM6120 AMF variants), protocol document v1.7.

  145 registers · 7 writable · RTU
  Also known as: HGM6100CAN, HGM6110N, HGM6120N, HGM6110CAN, HGM6120CAN
• Generator controller

  SmartGen HGM7100N Series

  HGM7110N (auto start) and HGM7120N (AMF) genset controllers, protocol document v1.3.

  81 registers · 33 writable · RTU
  Also known as: HGM7110N, HGM7120N
• Generator controller

  SmartGen HGM9510N / HGM9520N / HGM9530N

  HGM9510N, HGM9520N and HGM9530N paralleling genset controllers, protocol document v1.5.

  134 registers · 30 writable · RTU/TCP
  Also known as: HGM9520N, HGM9530N
• Generator controller

  Woodward easYgen-3000XT Series

  easYgen-3100XT-P1 / 3200XT-P1 / 3200XT-P1-LT, release 2.17-0, default Modbus data protocol 5010 (Basic Visualization).

  90 registers · 8 writable · RTU/TCP
  Also known as: easYgen-3100XT-P1, easYgen-3200XT-P1, easYgen-3200XT-P1-LT, easYgen-3100XT, easYgen-3200XT

Generator controllers: 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).