Domino
DFMETEO
DFMETEO: meteorological data detection
module for Domino bus
DFMETEO module allows the detection of several meteo-
rological data. The module interfaces, on one side, to the
Domino bus and, on the other side, to a special sensor
trough a dedicated communication line.
DFMETEO module reports the value of three parameters:
✗temperature
✗da light
✗wind speed
DFMETEO module provides 9 digital points to inform about
the following conditions:
✗Rain
✗Twilight
✗Temperature ≥ Threshold
✗Da light ≥ Threshold
✗Wind speed ≥ Threshold
✗Light from South
✗Light from West
✗Light from East
✗Sensor failure
The module features a 2-wa fixed terminal block for the
connection to Domino bus and a 3-wa fixed terminal block
for the connection, through lines A and B, to the meteoro-
logical sensor.
Near to the bus terminal block, a small push-button allows
the address assignment and a green LED shows when the
module is read to receive the address itself; the same
LED normall flashes ever 2 seconds about to signal that
the module is properl operating. A red LED near to the 3-
wa terminal block signals the communication presence on
the lines A and B. Under the cover of the bus terminal
block, a small 3-wa connector (PRG) allows the connec-
tion to the optional tester/programmer.
DFMETEO module is housed in a DIN 2M modular box for
rail mounting.
Address programming
DFMETEO module takes, inside the Domino bus, 4 con-
secutive input addresses and, if enabled b the configura-
tion panel of BDTools, 3 consecutive output addresses.
However, onl a unique base address has to be assigned
to the module to make it operating; assigning an address n,
it will take the input address from n to n+3 and the output
address from n to n+2 (if enabled). For the details about
the address programming refer to the related documenta-
tion. A white label on the front panel allows to write the
base address for an immediate visual identification.
Wiring diagram
The schematic diagram in the figure 1 shows the connec-
tions to be made between DFMETEO module and Domino
bus and the meteorological station (terminals A and B). The
meteorological station must be supplied b 24Vdc voltage.
The meteorological station has a 5-wa removable terminal
block with a premounted diode for reverse polarit protec-
tion; however, pa attention to the connection of the meteo
station because, in the opposite case, it could be irre-
versibl damaged. The connections must be executed be-
fore to appl the power suppl .
For the connection of the meteorological station use a ca-
ble with 2 twisted pairs, with proper section (for instance
2x2x0,8mmq); use a pair for the power suppl and the oth-
er pair for the communication line (A e B). If the chosen ca-
ble provides the shield, connect it to the terminal Sh of
DFMETEO module, leaving it unconnected on the side of
meteorological station. The maximum allowed length for
this cable is 100 meters.
Information reported on the bus
Input section:
As said above, DFMETEO takes, inside Domino bus, 4 in-
put addresses; said n the assigned base address, the infor-
mation mapped on the input section are:
Point n n+ n+2 n+3
Tempera-
ture value
in tenth of
°K (Kelvin
degrees
multiplied
b 10)
Da light
value in
tens of
LUX
(LUX di-
vided b
10)
Wind
speed
value
in tenth of
meters per
second
(m/s multi-
plied b
10)
Rain
2Twilight
3Temp.>= Th..
4Da light>= Th.
5Wind>= Th.
6Light fr. South
7Light fr. West
8Light fr. East
9
0
-
2 -
3 -
4 -
5 Sensor failure
6 -
DUEMMEGI s.r.l. - Via Longhena, 4 - 20139 MILANO
Tel. 02/57300377 - Fax 02/55213686 – www.duemmegi.it
Rel.: 2.0 Februar 2019 Page 1 of 6
