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Definitions of Protocols
E.2
NMEA 0183 – Protocol
The following parameters apply for synchronisation from GPS with the NMEA protocol
(setting GPS-NMEA, Chapter 10.1):
Protocol:
NMEA 0183 from Version 2.0 or higher
Interface :
RS422
Communication parameters:
4800 Baud, 8 data bits, 1 stop bit, no parity
Synchronisation:
1 PPS signal (current loop)
Expected NMEA packets:
GGA (reception quality)
ZDA (UTC time and date)
Important:
The specified NMEA packets must be:
a) sent automatically by the GPS receiver at periodic intervals (at least every 10 s),
or
b) requested by the ETC by means of a query telegram ($xxGPQ,ZDA*FF and
$xxGPQ,GGA*FF).
The used receiver may need to be reconfigured.
