Specifications

VP ONCORE COMMAND REFERENCE
DATUM SELECT (@@Ao)
Motorola Binary Format
Input Command • Query Current Datum ID Number:
@@AoxC<CR><LF>
x - $ff (one byte, hex ff)
C - checksum
Message Length: 8 bytes
• Change Datum ID Number:
@@AodC<CR><LF>
d - Datum ID 1 .. 51
C – checksum
Message Length: 8 bytes
Response Message • (to either command):
@@AodsssffiiffffxxyyzzC<CR><LF>
d - datum ID 1 .. 51
sssff - semi-major axis
sss - integer part 6,000,000 … 7,000,000
(6,000,000.0 ... 7,000,000.0)
ff - fractional part 0 .. 999 (0.0 ... 0.999)
iiffff - inverse flattening
ii - integer part 285 .. 305 (285.0 .. 305.0)
ffff - fractional part 0 .. 999,999,999
(0.0 .. 0.999999999)
xx - delta X -32768 .. 32767
(3276.8 .. 3276.7)
0.1 meter resolution
yy - delta Y -32768 .. 32767
(-3276.8 .. 3276.7)
0.1 meter resolution
zz - delta Z -32768 .. 32767
(-3276.8 .. 3276.7)
0.1 meter resolution
C - checksum
Message Length: 25 bytes
46 Synergy Systems, LLC 05OCT01