Specifications

VP ONCORE COMMAND REFERENCE
SET USER DEFINED DATUM (@@Ap)
Motorola Binary Format
Input Command • Request Current User Defined Datum Parameters:
@@ApdxxxxxxxxxxxxxxxxxC<CR><LF>
d - Desired User Datum 50 or 51
xxxxxxxxxxxxxxxxx (17 bytes, all hex 00)
C - checksum
Message Length: 25 bytes
• Define User Defined Datum Parameters:
@@ApdsssffiiffffxxyyZzC<CR><LF>
d - Datum ID 50 .. 51
sssff - semi-major axis
sss - integer part 6,000,000 .. 7,000,000
(meters) (6,000,000.0.. 7,000,000.0)
ff - fractional part 0 .. 999 (0.0 .. 0.999)
(meters)
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
(0.1 meter resolution) (-3276.8 .. 3276.7)
yy – delta-Y -32768 .. 32767
(0.1 meter resolution) (-3276.8 .. 3276.7)
zz –delta-Z -32768 .. 32767
(0.1 meter resolution) (-3276.8 .. 3276.7)
C - checksum
Message Length: 25 bytes
Response Message on Following Page
48 Synergy Systems, LLC 05OCT01