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6.3.2 Checking by means of a terminal program
First, the Laser Precipitation Monitor must be connected to the respective COM interface of the
used PC by an interface converter (RS485/RS232).
Start a terminal program, and configure the interface according to the sensor interface (baud rate,
parity, etc.). Now the Laser Precipitation Monitor is ready for request. See also chapter
7
. The
factory setting of the serial interface: 9600 Bd, 8, N, 1, full-duplex, ID:00
Check the control voltage (4010
±
5) through the diagnostic command („<id>dd“). In case the value
is outside the value range, and cleaning the glass panes shows no effect the Laser Precipitation
Monitor is to be sent-in for inspection. Moreover, the internal temperature (without sun radiation
max.
±
4° difference compared with the ambient temperature, does not apply to model
5.4110.x1.x00 when heating is on [extended heating]) as well as the laser driver temperature
(approx. 10° higher than the internal temperature) can be checked. Please note that for variant
“Extended Heating” (9.4110.x
1
.x00) the difference between internal and ambient temperature is
higher, when the heating is on.
Switch-on the telegram „Particle Event“ („<id>tm00003“). Drop a preferably spherical object with a
diameter smaller than 8mm through the measuring area.
Example 1:
with 4 mm steel ball (dropped from the middle of the laser head screen):
Reply from the sensor:
9476;588;497800898;4.04;00.90;3.71;00.89;+19
Diameter:
4.04 mm
Speed: 0.9 m/s
Example 2: with finger moving through the measuring area:
Reply from the sensor:
16370;2158;499106556;7.71;00.39;6.19;00.34;+19
Re-activate the starting conditions after test end, for example, the data format set before.
Содержание 5.4110 00 Series
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