Siemens NK8235

Hardware installation
NK822x hardware installation
5
41
Building Technologies
A6V10062437_a_en
Fire Safety & Security Products 30.06.2013
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.