Keller ADT1, Руководство по эксплуатации, Страница: 10 / 24

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3.9 Connection Terminal for the Sensors
The ADT1 offers the possibility to connect a low cost I
2
C, or a more precise RS485 Sensor of KELLER. The pin assignment
of the ADT1 is shown as follow:
3.9.1 Connection for X-Line (RS485- Interface) “low voltage” type only
Connect the black wire to the +3.5V supply voltage and
the white wire to the GND pin.
The blue wire is the RS485A (Pin 5) and the yellow the
RS485B (Pin 6) with is the communication interface to the
sensor.
The RS485 Interface is with an a 10kΩ resis tor terminat-
ed.
NOTE:
The communication address is 250, if only one
transmitter is connected. For configuration with up to 5
transmitters, the communication address is 1
… 5.
However, the communication address must be assigned
in advance.
3.9.2 Connection for D-Line (I
2
C-Interface)
Connect the black wire to the +3.5V supply voltage and
the white wire to the GND pin.
The yellow wire must be connected to the clock pin (Pin
3) and the blue wire to the data pin (Pin 4). The red wire
(EOC) is not required.
CAUTION: The I
2
C is interface is very sensitive to external
interferences. Therefore, we recommend connecting the
CASE of the Sensor to the SHIELD pin of the ADT1.
NOTE:
The communication address is 0x40, if only one
transmitter is connected. For configuration with up to 5
transmitters, the communication address is 0x40, 0x41,
0x43, 0x47 and 0x4F. However, the communication
address must be assigned in advance