External GPS into Display

When using a MoTeC Dash, GPS data is usually received through the device's serial input.

Some external devices that receive GPS data can also send the related CAN data to the dash. While the dash can interpret and log this GPS data without any problems, the lap timing might not function correctly.

To use the GPS data for the Start/Stop condition at a particular venue, the dash needs a ‘Custom’ CAN offset to be configured.

The two channels received via CAN as GPS channels will require the following offsets:
 
Latitude Offset = 3021x 
Longitude Offset = 3022y

Where 'x' and 'y' are the actual byte offsets in the CAN message.

	CAN Message Data Field
Byte	0	1	2	3	4	5	6	7
Channel	GPS Latitude				GPS Longitude

For example, the above CAN frame has GPS Latitude at offset 0 and GPS Longitude at offset 4. It would be configured as below.