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Danfoss VACON Modbus register maps

Updated 24 October 2026

1 Danfoss VACON model, 78 registers in all, each re-typed from Danfoss VACON’s own free documentation and checked against it.

• Variable frequency drive

  Danfoss VACON VACON 100 family (built-in Modbus RTU / Modbus TCP)

  VACON 100 INDUSTRIAL, FLOW, HVAC and 100 X drives using the built-in RS-485 Modbus RTU or Ethernet Modbus TCP/UDP (manual DPD00156D); application IDs per the VACON 100 INDUSTRIAL application guide DPD00927L (FW0072V037).

  78 registers · 26 writable · RTU/TCP
  Also known as: VACON 100 INDUSTRIAL, VACON 100 FLOW, VACON 100 HVAC, VACON 100 X, VACON0100

Danfoss VACON: 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).