GHM DeltaOHM HD51.3D Series, Operating Manual

Page: 21 / 42

HD51.3D…
- 21 -
V2.0
Command Reply Description
RU2M & n| Reads current setting of parity and stop
bits for ASCII mode
CU1Dcccccc &| Sets measurements order in the string sent
in ASCII proprietary mode
In the sequence ccccccccccc, each character
identifies a measurement according to the
following correspondence:
0

Barometric Pressure
1

Temperature (sensor Pt100)
2

Relative Humidity
3

Pyranometer
5

Wind speed (coordinates U,V)
7

Wind speed (intensity)
8

Wind Direction (Azimuth)
G

Wind Gust (intensity and direction)
S

Sound speed
T

Sonic Temperature
C

Compass, Tilt_Y, Tilt_X
E

Errors
Default : 78TE
(see Note 2 )
RU1D & ccccccccccc| Reads measurements order in the string
sent in ASCII proprietary mode
CU2Rnnnn &| Sets transmission interval of string with
measurements in ASCII proprietary mode
to nnnn seconds
The interval should range within 1 and
3600 seconds
Default : 1 second
RU2R & nnnn| Reads transmission interval of string with
measurements in ASCII proprietary mode
N
OTE
2 : M
EASUREMENTS
O
RDER
In the measurement string sent by the instrument in ASCII proprietary mode, measurements
can be set in arbitrary order: one should simply indicate the desired order in the sequence of
characters "cccccc" sent by the command C1UD. The sequence of characters "cccccc" can have
a variable length up to a maximum of 16 characters.
Example : if the sequence of characters is set to 780, wind speed, wind direction and baromet-
ric pressure measurements will appear from left to right in the data string sent by the instru-
ment.
If information on error conditions is requested (E character), three numbers with the following
meaning will appear in the data string sent by the instrument:
1. First number = error code identifying the transducers and the type of error.
The number is composed by two digits. The first digit indicates the transducer that
presents the error, according to the numeration indicated in the figure shown below.
Note: the x
ws
and y
ws
axes visible in the figure are used internally by the instrument
to measure wind speed and direction and have the opposite direction with respect to
the X and Y reference axes for the tilt angles described on page 10.