Leica Geosystems Laser Locator - Manual (Page 24)

24
Laser Locator-1.0 en
Data transfer format
15'708/0
31'416/0
N
+
3
0°
0/0
0/5'236
0/57'596 -30°
47'1240/0
Measurement
examples:
Data transfer
A complete set of measure-
ments therefore consists of 30
ASCII characters.
Before and after this continuous
string, a steady logic 1 is
transmitted while the Laser
Locator is powered on.
Start character for measurement
value:
d ................................... distance
a .................................... azimuth
e ................... angle of inclination
(elevation)
Start character for error report:
C ......................... compass error
R .......................... distance error
M ............................... instrument
(main board) error
Measurement value: 6 integer
digits or six-digit hexadecimal
error code.
The data transmitted comprises:
- distance in decimetres, with
0.5 m resolution
- azimuth and inclination in
milliradians (full circle =
6'283.2 mrad) and 0.2 mrad
resolution.
Every measurement (distance,
azimuth, inclination) is transmitted
as 10 ASCII characters:
Chec
ksum
End char
acter
M
easurement
v
alue
S
tar
t char
acter
Z XXXXXX XY <CR>
Checksum: 2 hexadecimal
digits. These correspond to the
8 LSBs (least significant bits) of
the ASCII measurement value
and the start character.
End character: 1 position for line
feed (CR).