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Sensor Compatibility

GNSS Receiver Requirements

The requirements below outline the important components and considerations for using a GNSS receiver with Level COMMAND.

  • StarFire RTK, NMEA 0183 Fixed RTK over RS232 serial, or NMEA 2000 Fixed RTK output over ISOBUS/CANBUS.
  • Suitable adapters are available to connect RS232 or CANBUS 
  • and 12V external power to the COMMAND harnessing system. 
  • Ruggedised and suitable for earthmoving machine control applications.

Required NMEA 0183 Serial Sentences

  • GGA -  Time, position, and fix related data
  • GSA -  GPS DOP and active satellites
  • VTG - Actual track made good and speed over ground

Optional NMEA 0183 Serial Sentences

  • RMC - Position, Velocity, and Time
  • ZDA - UTC day, month, and year, and local time zone offset

Supported NMEA 2000 ISOBUS/CANBUS PGNs

  • 129029 - GNSS Position Data
  • 129539 - GNSS DOPs
  • 129025 - Position, Rapid Update
  • 129026 - COG & SOG, Rapid Update
  • 129028 - Altitude Delta, Rapid Update

Compatible GNSS Output Types

Receivers being used with COMMAND must be capable of RTK positioning calculations. Differential GPS or SF signals are not currently suitable for vertical position feedback as position accuracy is too low.

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John Deere StarFireTM

COMMAND is able to interface with all modern StarFire receivers over ISOBUS/CANBUS for position feedback, including StarFire 3000, 6000, 7000 & 7500 models.

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NMEA 2000

COMMAND is able to interface with with GNSS receivers supporting NMEA 2000 standard output over ISOBUS/CANBUS for position feedback such as modern Case Vector Pro, New Holland PLM Cygnus & Trimble NAV 900 receivers.

NMEA 0183

COMMAND is able to interface with any receiver capable of providing NMEA 0183 standard sentences over RS232 serial for position feedback. The sentences below are required at a minimum for usage with Level COMMAND.

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