Simrad HFB datagram format
Simrad HFB is a proprietary datagram format created by Kongsberg Maritime. It provides the vertical distance (height) from the headrope to the footrope, and from the headrope to the bottom. The heights are measured by an ITI TrawlEye or a height sensor.
Format
@IIHFB,x.x,M,y.y,M<CR><LF>
Description
1 IITalker identifier
2 HFBDatagram identifier
3 x.x,MThis is the distance (height) from the headrope to the footrope. (0 – 100 m)
4 y.y, MThis is the distance (height) from headrope to bottom (seabed). (0 – 100 m)
Tip
If you use two height sensors, the information from the second sensor is provided in the Simrad HB2 datagram.