Hardware installation
5
NK823x hardware installation
50
Building Technologies
A6V10062437_a_en
Fire Safety & Security Products
30.06.2013
COM 1 … COM 4: RS232 Connectors
RS232 lines are connected to 9pin D-Sub connectors, female type.
RS232 connections.
Pin
Assignment
NK822x
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
DIN Rail Installation
The modules are supplied in a plastic box that can be easily attached to the DIN rail by
hooking it on the top of the rail and pressing it in on the opposite side. To detach the
box, pull downward on the tab located at the rear of the module. The I/O modules are
mounted the same way.
Note: Before removing the box, carefully disconnect the flat cable (bus) of the I
2
C
module, as well as the power supply cables.
I
2
C interface
1
2
3
4
SIEMENS
NK8235
Power
Vital functions
Tamper
Download
Diagnostic
Com 1
Com 2
Com 3
Com 4
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
DF8090
DF8040
DF8045
DF8020
PW
MAINS
AC/DC
LOW BATT
BATT FUSE
1
2
3
4
NK823x I
2
C bus addresses
Item
Description
1
Address setting (factory setting): address 8.
2
Address setting (factory setting): address 1.
3
Address setting: address 2.
4
Address setting: address 3.