Globalstar SmartOne Series, Руководство пользователя

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SmartOne Manual Rev 1.5 DOC# 9100-0268-01 p.46
Type 0 Message Class
Message Format
Table 1 below shows the format of all standard messages. Specific
variants of the message will be shown individually in following
subsections.
Byte Number Variable Bits Description
0
Type field 2
Bit (1:0) = 0 = message type:
0
Battery state 1
Bit (2) 0 = Good battery. 1 =
replace battery.
0
GPS Data Valid 1
Bit (3) 0 = GPS Data valid in
this message. 1 = GPS failed
in this message cycle, ignore
Latitude and Longitude fields.
0
Missed Input State
Change
2
Bit (4) Missed Input 1. A
value of 1 in this bit means
that an input state change of
input 1 was missed due to the
transmission of a higher
priority message.
Bit (5) = Missed Input 2. A
value of 1 in this bit means
that an input state change of
Input 2 was missed due to the
transmission of a higher
priority message.
0
GPS fail counter 2
Bit (7:6) = GPS fail counter.
Counts up to a maximum value of
3 upon GPS failure.
1,2,3,4,5,6
Latitude/Longitude 48
Byte 1 = Latitude MSByte
Byte 2 = Latitude
Byte 3 = Latitude LSByte
Byte 4 = Longitude MSByte
Byte 5 = Longitude
Byte 6 = Longitude LSByte
360 degrees of Longitude coded
in signed binary with 3 bytes
and 180 degrees of Latitude
coded in signed binary with 3
bytes.
Positive Longitudes correspond
to East Longitudes
Positive Latitudes correspond
to North Latitudes
7
Input Status 4
These bits reflect the state of
the inputs and indicate which
one, if any, triggered an Input
Status Changed message.
Bit 0: Input 1 change: 0 =
Did not trigger message, 1 =
Triggered message.