Table 5 Binary Message Header Structure - Novatel GPStation-6 User Manual

Messages
Field
Field Name
#
1 Sync
2 Sync
3 Sync
4 Header Lgth
5 Message ID
6 Message
Type
7 Port Address
8 Message
Length
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GPStation-6 User Manual Rev 2
Table 5: Binary Message Header Structure
Field
Description
Type
Char Hexadecimal 0xAA
Char Hexadecimal 0x44
Char Hexadecimal 0x12
Uchar Length of the header.
Ushort This is the Message ID
number of the log (refer to
the OEM6 Reference
manual for the Message ID
values of individual logs).
Char Bits 0-4 = Reserved
Bits 5-6 = Format
00 = Binary
01 = ASCII
10 = Abbreviated
ASCII, NMEA
11 = Reserved
Bit 7 = Response bit
(see Section 3.4, page 40)
0 = Original
Message
1 = Response
Message
Uchar See Table 6 on page 38
(decimal values >=32 may
be used) (lower 8-bits only)
Ushort The length in bytes of the
body of the message, not
including the header nor the
CRC.
Binary Binary
Bytes Offset
1 0
1 1
1 2
1 3
2 4
1 6
1 7
a
2 8
Ignored
on Input
N
N
N
N
N
N
b
N
N
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