User's Manual - Exemys

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SGW1-MB-NM User’s Manual Exemys The SGW1-MB-NM has three serial ports, each of them with a particular function. COM A This is the console port. You can use this port to configure the device as described on the Command Console section. Please follow this diagram to assemble a cable to connect the device to a computer’s RS232 port. COM B You must connect the GPS or other NMEA device to this serial port. On the next diagram you’ll find a connection example. Please read your NMEA device’s manual to connect it properly. www.exemys.com R4 4
SGW1-MB-NM User’s Manual Exemys COM C This is the Modbus slave port. You must connect your Modbus master device to this port. It’s a RS485 port. LED indicators LED “L1” will blink each time the devices receives a Modbus query. LED “L2” will blink each time the devices receives a NMEA sentence. Modbus registers On the next table you will find how each NMEA sentence is mapped into Modbus registers. If your NMEA device is not sending one of the listed sentences you will read zeros. GGA 40001 UTC Time (low register) 40002 UTC Time (high register) 40003 Latitude (low register) 40004 Latitude (high register) 40005 Longitude (low register) 40006 Longitude (high register) 40007 GPS Quality 40008 Number of satellites 40009 Horizontal Dilution 40010 Altitude (low register) 40011 Altitude (high register) 40012 Unit Altitude 40013 Geoidal separation 40014 Units of geoidal separation 40015 Age of differential GPS data VTG 40016 True track made good 40017 Magnetic track made good 40018 Ground speed, knots 40019 Ground speed, Kilometers per hour www.exemys.com R4 5
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User's Manual - Exemys

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