User's Manual

DRAFT TrimTrac 1.5 Technical Manual v0.3ab 128
3=Acknowledged; 4=Monitor Activated
Q
LPA Status: 0=Normal; 1=Activated; 2=Sent;
3=Acknowledged; 4=Monitor Activated
R
External Power: 0=Bad (Below 5 VDC); 1=Good (5 VDC or
higher)
W
Geofence Status: 0=Normal; 1=Violation; 5= New LPA-based
Geofence
X
Extended GPS Status code: 0=Internal Antenna, Almanac
Complete
1=External Antenna, Almanac Complete
2=Int. Antenna, Almanac Incomplete
3=Ext.Antenna, Almanac Incomplete
Note: Always 0 if GPS Status Code set to 7
UUU
Reserved for future use
YYYYYYYY
Unit ID. Always 8 alphanumeric characters, UPPER CASE ONLY
ZZ
Checksum.
Optional (Provided only if Position Report)
HHH.IIIIII
I
Latitude. WGS-84 Coordinates. Units of Degrees to 7 decimal
places plus ‘+’ sign = North and ‘-‘ = South.
(-90.0000000 to +90.0000000)
JJJJ.KKKKK
KK
Longitude. WGS-84 Coordinates. Units of Degrees to 7 decimal
places plus ‘+’ sign = East and ‘-‘ = West.
(-180.0000000 to +180.0000000)
LLLLLL
Altitude. WGS-84 Altitude reference to MSL. In Feet, always 5
Digits plus sign (-99999 to +99999)
MMM
Horizontal Speed. Miles Per Hour. Always 3 Digits.
NNN
Heading. Relative to True North, increasing Easterly. Units of
Degrees. Always 3 Digits. (000-359).
Table 66, REPORT_POS and STATUS_MSG Messages
Each new outbound REPORT_POS and STATUS_MSG message is given a
Report Sequence number. The sequence number is 16 bits and increments by one
with each message created and rolls over to 0000 once the maximum 16-bit value
of FFFF is reached. The TrimTrac Application saves the message in non-volatile
memory each time one is created; this is called the Message Log. The Message
Log is a FIFO log of the last 1,024 REPORT_POS or STATUS_MSG messages
(whether transmitted or only logged) such that when it is full the oldest one is
deleted. The Message Log can be queried with the QUERY_LOG message from
the server application.