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GFX Manual
EATON
GFX Installation and Operation Manual April 2020 www.eaton.com
GGA
GPS Fix Data
The GGA message includes time, position, and fix related data for the GPS receiver at 5 hz update rate.
Field
Description
0
Message ID $GPGGA
1
UTC of position fix
2, 3
Direction of latitude, N (North) or S (South)
4, 5
Direction of longitude, E (East) or W (West)
6
GPS Quality indicator: 0 - Fix not valid, 1 - GPS fix, 2 - Differential GPS fix
7
Number of satellites in use, range from 00 through to 24+
8
Horizontal Dilution of Precision (HDOP)
9, 10
Antenna altitude in Meters (MSL reference) , M = Meters
11, 12
"Geoidal Separation in Meters, M=Meters. Geoidal separation is the difference between the WGS-84
earth ellipsoid and mean-sea-level."
13
Age of differential GPS data record. Time in seconds since last Type 1 or Type 9 update. Null field when DGPS is not used.
14
Reference station ID, range 0000-4095. A null field when any reference station ID is selected and no corrections are received.
hh
The checksum data, always begins with *
ZDA
UTC day, month, and year, and local time zone offset
The ZDA message contains Time of Day in UTC: the day, the month, the year and the local time zone at 1 hz update rate.
Field
Description
0
Message ID $GPZDA
1
UTC (When UTC offset has been decoded by the receiver)
2
Day, ranging between 01 and 31
3
Month, ranging between 01 and 12
4
Year
5
Local time zone offset from GMT, ranging from 00 through ±13 hours
6
Local time zone offset from GMT, ranging from 00 through 59 minutes
hh
The checksum data, always begins with *
PMTK_SLEEP_CTL
Receiver Sleep Control
Controls the Sleep mode of the receiver.
Field
Description
0
Message ID $PMTK161
1
0 - Sleep (Disable NMEA 0183 output)
1 - Wake (Enable NMEA 0183 output)
PMTK_SET_NMEA_BAUDRATE
NMEA Baudrate
Set NMEA port baud rate
Field
Description
0
Message ID $PMTK251
1
"Baudrate setting:
9600
19200
38400
57600
115200"
NMEA 0183 configuration messages
GFX NMEA0183 output can be enabled or disabled using PMTK_SLEEP_CLT serial command.
NMEA0183 output is enabled by default.
Baudrate of NMEA0183 messages can be configured using PMTK_SET_NMEA_BAUDRATE serail command.
Default baud rate is 115200 bps
NMEA 0183 output messages
