36 EuroPak-15a Receiver User Manual Rev 5
Chapter 4 Using Commands and Logs
The ASCII message header is formatted as follows:
Table 6: ASCII Message Header Structure
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 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.
Parameters Variable length binary data
CRC 4 bytes
2. The 3 Sync bytes are always:
Field Field
Name Field
Type Description Ignored
on Input
1sync Char Sync character. The ASCII message is always preceded by a
single ‘#’ symbol. N
2message Char The ASCII name of the message. The names of logs are given
in Table34 on Page 71.N
3port Char The name of the port from which the log was generated.
See Table 10 on Page 39.Y
4Reserved ULong Reserved for internal use N
5idle time Float The minimum percentage of time that the processor is idle Y
6time status Enum The quality of the GPS time, as described in Section 4.4.2.4
on Page 40.Y
7week ULong GPS week number Y
8seconds GPSec Seconds from the beginning of the GPS week accurate to the
millisecond level Y
9receiver
status ULong An eight digit hexadecimal number representing the status of
various hardware and firmware components of the receiver.
This number is described in Table 46 on Page 93.Y
10 Reserved ULong Reserved for internal use Y
11 ULong Y
12 ;Char The ‘;’ character indicates the end of the header N