Siemens NK8232

5
Hardware installation
NK822x hardware installation
40
Building Technologies
A6V10062437_a_en
CPS Fire Safety
30.01.2019
CN3: Power supply
Power connections.
Pin
Assignment
1
+ PWR
2
Earth
3
– PWR
4
—
5
—
CN4 (NK822x) / X104 and X105 (NK823x): RS485 connectors
RS485 connectors.
Pin
Assignment
1
+ RS485
2
– RS485
COM 1 ... COM 4: RS232 connectors
RS232 lines are connected to 9pin D-Sub connectors, female type.
RS232 connectors
Pin
Assignment
NK822x COM 1-4
NK823x COM: 1-2
NK8235.4: COM 3-4
1
CD
CD
—
2
RXD
RXD
RXD
3
TXD
TXD
TXD
4
DTR
DTR
—
5
GND
GND
GND
6
DSR
DSR
—
7
RTS
RTS
—
8
CTS
CTS
—
9
RI
RI
—
CN3: LON connection (CS6 Guarto)
LON connections.
Pin
Assignment
1
—
2
—
3
—
4
LON-A
5
LON-B
A LON TP/FT-10 network segment can be set up for bus- or free topology. LON
repeaters can connect the segments. Up to four LON repeaters (such as NK8020)
might be used to extend the size of a LON network.