Adding NMEA Data from External Devices
You can display on Scala data received from external devices such as GPS, sonar, winch control system, compass or anemometer.
Before you begin
- Check the equipment from which you want to receive data to help you complete the parameters.
- Check that your version of Scala is able to read information sent by the device: see Compatible Incoming NMEA Sentences.
Procedure
- Click .
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Under the NMEA Inputs tab, click Add.
- Choose the type of connection between serial port, UDP or TCP socket.
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If using a serial port:
- In Port, select the incoming data you want to add.
- In Baud, choose the transmission speed (bit per second).
- Leave the other default parameters if you have no specific requirements.
- Select a different input format if you have Marelec or Rapp Marine/Rapp Hydema equipment. Otherwise, select Standard NMEA format.
- To broadcast the data received on this serial port to other equipment than Scala, select Output to UDP, then enter a port above 1000 and enter 255.255.255.255 to broadcast to all equipments, or enter a different subnet mask.
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If using UDP:
- enter the port of the server sending data.
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If using TCP:
- Enter the IP address of the server and the port.
- Select a different input format if you have Marelec or Rapp Marine/Rapp Hydema equipment. Otherwise, select Standard NMEA format.
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Click OK.
Note: Minimum data requirements to have trawl positioning are: heading, GPS position, warp length and relative bearing angles from door positioning sensors.
Results
![](../img/NMEADataDisplay.png)
LEDs blink green when data is received (it may be steady green if data are received continuously). When communication with the NMEA devices is lost, LEDs do not blink anymore.