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Hardware installation
5
NK823x hardware installation
50
Building Technologies
Fire Safety & Security Products
COM 1 ... COM 4: RS232 Connectors
RS232 lines are connected to 9pin D-Sub connectors, female type.
Pin
Assignment
NK822x
1
CD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
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
module, as well as the power supply cables.
I
C interface
2
SIEMENS
Power
Vital functions
Tamper
Download
Diagnostic
NK8235
NK823x I
C bus addresses
2
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.
RS232 connections.
NK823x COM: 1-2
CD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
1
Com 1
Com 2
PW
MAINS
Com 3
AC/DC
Com 4
LOW BATT
BATT FUSE
DF8090
1 2 3 4 5 6 7 8
1
2
3
4
NK8235.4: COM 3-4
RXD
TXD
GND
2
2
3
DF8040
DF8045
DF8020
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
A6V10062437_a_en
30.06.2013
C
4
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