M12 Oncore Users Guide Supplement - deetc - isel
M12 Oncore Users Guide Supplement - deetc - isel
M12 Oncore Users Guide Supplement - deetc - isel
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Input Command<br />
Response Message<br />
Motorola GPS Products<br />
<strong>M12</strong> <strong>Oncore</strong> User’s <strong>Guide</strong> <strong>Supplement</strong><br />
Revision 1.0 01/25/00<br />
SELECT DATUM<br />
Motorola Binary Format<br />
• Poll current datum ID code:<br />
@@AoxC<br />
x 1 out of range byte $ff<br />
C checksum<br />
Message length: 8 bytes<br />
• Change current datum ID code:<br />
@@AodC<br />
d datum ID 49 or 50<br />
C checksum<br />
Message length: 8 bytes<br />
• To either command:<br />
@@ApdsssffiiffffxxyyzzC<br />
d datum ID 49 or 50<br />
sssff semi-major axis (m)<br />
sss integer part 6,000,000 .. 7,000,000<br />
ff fractional part 0 .. 999 (0.0 .. 0.999)<br />
iiffff inverse flattening<br />
ii integer part 285 .. 305<br />
ffff fractional part 0 .. 999,999,999 (0.0 .. 0.999999999)<br />
xx delta X (0.1 m) -32,768 .. 32,767 (-3276.8 .. 3276.7)<br />
yy delta Y (0.1 m) -32,768 .. 32,767 (-3276.8 .. 3276.7)<br />
zz delta Z (0.1 m) -32,768 .. 32,767 (-3276.8 .. 3276.7)<br />
C checksum<br />
Message length: 25 bytes<br />
19