User’s Guide ______________________________________________________________________
140 _________________________________________________________________ M211840EN-C
[S] = Hail units:
M = metric (accumulated hailfall in hits/cm
2
, Hail
event duration in s, Hail intensity in hits/cm
2
h)
I = imperial (the corresponding parameters in units
hits/in
2
, s, hits/in
2
h), H = hits (hits, s, hits/h)
Changing the unit resets the precipitation counter.
[M] = Auto-send mode: R = precipitation on/off, C =
tipping bucket, T = time based
R = precipitation on/off: The transmitter sends a
precipitation message 10 seconds after the first
recognition of precipitation. Rain duration Rd
increases in 10 s steps. Precipitation has ended when
Ri = 0. This mode is used for indication of the start
and the end of the precipitation.
C = tipping bucket: The transmitter sends a
precipitation message at each unit increment (0.1
mm/0.01 in). This simulates conventional tipping
bucket method.
T = time based: Transmitter sends a precipitation
message in the intervals defined in the [I] field.
Do not use the auto-send mode tipping bucket in
polled protocols as it decreases the resolution of the
output (quantized to tipping bucket tips).
[Z] = Counter reset: M = manual, A = automatic, L=limit
Y = immediate
M = manual reset mode: The counter is reset with
aXZRU command. See Precipitation Counter Reset
(aXZRU) on page 85.
A = automatic reset mode: The counts are reset after
each precipitation message whether in automatic
mode or when polled.
L = overflow reset mode. The rain counter or hail
counter is reset, when it reaches the predefined limit.
The overflow limits (x, y) are defined with the
commands aRU,X=x for rain counter and aRU,Y=y
for hail counter.
Y = immediate reset: The counts are reset
immediately after receiving the command.
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