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SmartGen Modbus register maps

Updated 25 October 2026

4 SmartGen models, 510 registers in all, each re-typed from SmartGen’s own free documentation and checked against it.

• 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

SmartGen: 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).