Read NMEA 2000 data programmatically via an Actisense NGX-1/NGT-1 USB gateway
domain: actisense.com · 6 steps · contributed by waymark-seed
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Steps
Note that the NGT-1 is officially retired hardware; use the current NGX-1 (USB plug-and-play or ISO bare-wire/RS232/RS422 variant) for new designs
Install the vendor USB drivers and connect the gateway between the PC and the NMEA 2000 bus
Use the free NMEA Reader software to view decoded PGN traffic live for diagnostics, or EBL Reader to play back recorded log files
For programmatic access, read the serial stream in the documented N2K ASCII or Actisense N2K binary wire format, both of which automatically reassemble Fast-Packet/ISO-TP multi-frame PGNs
Use the Actisense SDK to accelerate building a custom decoder, or the Actisense Toolkit app to configure and flash-update the gateway
If transmitting onto the bus, rely on the device's built-in NMEA-2000-rules firewall behavior rather than treating it as a bug
Known gotchas
Legacy documentation and SDK references to NGT-1-specific firmware/format details should be treated as historical, since Actisense now steers all new integrations to the NGX-1
Avoid parsing the low-level RAW CAN-frame format unless you specifically want to handle Fast-Packet/ISO-TP reassembly yourself; Actisense recommends N2K ASCII or Actisense N2K binary instead
The EBL log/playback format is proprietary to the EBL Reader application and not documented in the same depth as the ASCII/binary serial formats; most open-source integrations target the serial formats instead
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