Motorola M12 Oncore User Manual page 21

Input Command
Response Message
Motorola GPS Products
M12 Oncore User' s Guide Supplement
Revision 1.0 01/25/00
SET USER DATUM
Motorola Binary Format
• Poll current user defined datum parameters:
@@ApdxxxxxxxxxxxxxxxxxC<CR><LF>
d
xxxxxxxxxxxxxxxxx
C
Message length: 25 bytes
• Change current user defined datum parameters:
@@ApdsssffiiffffxxyyzzC<CR><LF>
d datum ID
sssff semi-major axis (m)
sss integer part
ff fractional part
iiffff inverse flattening
ii integer part
ffff fractional part
xx delta X (0.1 m)
yy delta Y (0.1 m)
zz delta Z (0.1 m)
C checksum
Message length: 25 bytes
• To either command:
@@ApdsssffiiffffxxyyzzC<CR><LF>
d datum ID
sssff
sss integer part
ff fractional part
iiffff inverse flattening
ii integer part
ffff fractional part
xx delta X (0.1 m)
yy delta Y (0.1 m)
zz delta Z (0.1 m)
C checksum
Message length: 25 bytes
desired user datum 50
17 bytes all hex 00
checksum
50
6,000,000 .. 7,000,000
0 .. 999 (0.0 .. 0.999)
285 .. 305
0 .. 999,999,999 (0.0 .. 0.999999999)
-32,768 .. 32,767 (-3276.8 .. 3276.7)
-32,768 .. 32,767 (-3276.8 .. 3276.7)
-32,768 .. 32,767 (-3276.8 .. 3276.7)
50
semi-major axis (m)
6,000,000 .. 7,000,000
0 .. 999 (0.0 .. 0.999)
285 .. 305
0 .. 999,999,999 (0.0 .. 0.999999999)
-32,768 .. 32,767 (-3276.8 .. 3276.7)
-32,768 .. 32,767 (-3276.8 .. 3276.7)
-32,768 .. 32,767 (-3276.8 .. 3276.7)
21