Siemens NK8000 MP.4.60 Installation Function & Configuration Commissioning Safety Regulations page 41

Building Technologies
Fire Safety & Security Products
CN3: Power supply
Pin Assignment
1 + PWR
2 Earth
3 – PWR
4 —
5 —
CN4 (NK822x) / X104 and X105 (NK823x): 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.
Pin Assignment
NK822x COM 1-4
1 CD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
CN3: LON connection (CS6 Guarto)
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.
NK822x hardware installation
Power connections.
RS485 connectors.
RS232 connectors
NK823x COM: 1-2
CD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
LON connections.
Hardware installation
5
NK8235.4: COM 3-4
—
RXD
TXD
—
GND
—
—
—
—
A6V10062437_a_en
30.06.2013
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