26
(Units with basic control – not supplied with free cooling versions)
The control panel enable data exchange
with a supervision system via RS485 serial connection. The optional connection cable must be ordered to be
attached to the SERIAL socket on the I/O board.
FITTING THE OPTIONAL RS485 BOARD
1.
Disconnect the power supply to the board;
2.
Insert the RS485 card on the SERIAL connector of the main board;
3.
When making the connection of the serial line, pay attention to polarities as shown;
4.
The serial line must be closed by means of a 120
Ω
- 1/4W resistance, placed between the TX/RX+ and
TX/RX- terminals of the board at the endline of the network.
5.
The address of the board is set using the dip switches, adding the HA parameter value (default = 1):
Net. Addr.
Par. HA
Dip 1
Dip 2
Dip 3
Dip 4
Net. Addr.
Par. HA
Dip 1
Dip 2
Dip 3
Dip 4
0+1
1
OFF
OFF
OFF
OFF
80+1
1
OFF
ON
OFF
ON
16+1
1
OFF
OFF
OFF
ON
96+1
1
OFF
ON
ON
OFF
32+1
1
OFF
OFF
ON
OFF
112+1
1
OFF
ON
ON
ON
48+1
1
OFF
OFF
ON
ON
128+1
1
ON
OFF
OFF
OFF
64+1
1
OFF
ON
OFF
OFF
RS485 SERIAL
CIRCUIT
1 2 3
pin 1
:
GND
pin 2
:
RX+ / TX+
pin 3
:
RX- / TX-
4
3
2
1
Dip Switch
ON OFF
Insert in serial connector
Summary of Contents for Aquaflair 00152
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