Unfortunately it is not possible in any NMEA 0183 networking situation to connect the output of more than one Talker to the input of one or more Listener/s. To convert data from more than one NMEA 0183 Talker to NMEA 2000 you have two choices...
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The primary function of the NGW-1’s NMEA 0183 LED is to indicate reception of a valid NMEA 0183 sentence...
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There is a diagram on page 6 of the NGW-1 User Manual that illustrates the connections from the NGW-1 to an NMEA 0183 device. The same diagram can be seen below...
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1. NGW-1 firmware version 2.620 or higher is required to configure an NGW-1 using Toolkit. If your NGW-1 has an older version of firmware, please update it following the instructions in the NGW-1 User Manual...
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With the release of firmware version 2.660 for the Actisense NGW-1, we have added conversions from NMEA0183 DSC & DSE sentences to NMEA2000 PGNs...
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If your NMEA 0183 Listener is not showing any data when connected to the NMEA 0183 output of an NGW-1, the first step for fault finding should be to see if the NGW-1 supports the conversions you need...
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NGW-1 firmware v2.500 and newer. Switching between AIS and Standard configurations does not require the firmware to be updated, as Actisense Toolkit can help create the exact configuration by enabling or disabling conversions as required. Please refer to Page 9 for details of how to configure an NGW-1 using Actisense Toolkit...
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When there is more than one device of the same type (like a GPS) on the NMEA 2000 network, the NGW-1 will use the data from the highest priority (lowest source address). If the device you'd rather use as a secondary Talker for the NGW-1 claims a lower source address then unfortunately there is no easy way to change this. The first step would be to try changing the device..
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NMEA 0183 Output. It is perfectly acceptable to connect up to eight devices to the NGW-1 NMEA 0183 output provided that they are all individually electrically isolated, depending on the electrical demands from each device. However, please check with your device manufacturers that you do not have more than one device that does not have an electrically isolated input...
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The only NMEA 0183 sentence that is currently used for engine data is RPM, so it is impossible for any manufacturer to create a conversion from NMEA 2000 to NMEA 0183 for all of your engine data...
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