COM0
/
COM1
S
ERIAL
I
NTERFACES
System 6844(RC) - V03.00
113 / 157
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
6.3.12 NMEA 0183 - GPZDA (V3.00)
The datagram expresses the time information in NMEA format
2
0183. The structure matches
the standard string ZDA Time & Date.
The below transmitted data string contains only the time information in UTC and the position
in the following format:
$
GPZDA
,hhmmss,DD,MM,YYYY,hhh,mm*CC<CR><LF>
All information are transmitted between the ASCII characters
"$"
and
"*"
, followed by two
characters for the checksum (EXOR calculated characters between
“$"
and
"*"
). The hexa-
decimal values of the upper and lower 4 bits of the checksum are transferred into ASCII
characters. The binary values
A-F
are
transferred to the ASCII characters
"A"
-
"F"
(41h -
46h).
All information are transmitted as ASCII characters with 8 bit word length, 1 stop bit and no
parity.
The structure of string contains the following information:
Information
Format
Description
Time Base
GP
Time Base=GPS
String Identifier
ZDA
String for Time & Date
Time
hhmmss
Hours, Minutes, Seconds
Date
DD,MM,YYYY
Day, Month, Year (4 digits)
Local Time
hhh,mm
Hours with pre-sign, Minutes
Checksumme
CC
The checksum is calculated from the XOR function
between
"$"
and
"*"
of all transmitted ASCII charac-
ters. All information are transmitted as ASCII charac-
ters.
6.3.12.1 Specified Settings
Automatic:
no
Required:
baud rate = 4800 baud
word length = 8 bit
stop bit = 1
parity = no parity
transmission point = every second
second forerun off
control character at second change off
transmission delay off
time base = UTC
Blocked:
no
2
NMEA = National Marine Electronics Association
