Binary; Ascii Message Header Structure - Novatel EuroPak-15ab User Manual

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Using Commands and Logs
The ASCII message header is formatted as follows:
Field
Field
Name
1
sync
2
message
3
port
4
Reserved
5
idle time
6
time status
7
week
8
seconds
receiver
9
status
10
Reserved
11
12
;
Example ASCII Format Log:
#PSRPOSA,COM1,0,43.0,FINESTEERING,265,320943.000,00840000,
0000,33331;SOL_COMPUTED,SINGLE,51.11638529847,-114.03825624352,
1045.2359,0.0000,WGS84,1.5908,1.4096,2.3924,"",0.000,0.000,10,8,
0,0,0,0,0,0*84ea7b68[CR][LF]
4.3.2

Binary

Binary messages are meant strictly as a machine readable format. They are also ideal for applications where the
amount of data being transmitted is fairly high. Because of the inherent compactness of binary as opposed to
ASCII data, the messages are much smaller. This allows a larger amount of data to be transmitted and received
by the receiver's communication ports. The structure of all Binary format messages follows the general
conventions as noted here:
1. Basic format:
Header
Parameters Variable length binary data
CRC
2. The 3 Sync bytes are always:
EuroPak-15ab Receiver User Manual Rev 1
Table 6: ASCII Message Header Structure
Field
Type
Sync character. The ASCII message is always preceded by a
Char
single '#' symbol.
The ASCII name of the message. The names of logs are given
Char
in Table 32 on Page 73.
The name of the port from which the log was generated.
Char
See Table 10 on Page 42.
ULong
Reserved for internal use
Float
The minimum percentage of time that the processor is idle
The quality of the GPS time, as described in Section 4.4.2.4
Enum
on Page 43.
ULong
GPS week number
Seconds from the beginning of the GPS week accurate to the
GPSec
millisecond level
An eight digit hexadecimal number representing the status of
ULong
various hardware and firmware components of the receiver.
This number is described in Table 45 on Page 95.
ULong
Reserved for internal use
ULong
Char
The ';' character indicates the end of the header
3 sync bytes plus 25 bytes of header information. The header length is variable
as fields may be appended in the future. Always check the header length.
4 bytes
Description
Chapter 4
Ignored
on Input
N
N
Y
N
Y
Y
Y
Y
Y
Y
Y
N
39

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