Serial Interfaces; Lon Interface; Onboard I/O - Siemens NK8222 Installation, Function & Configuration

S101: DIP-Switches
5.4

Serial interfaces

5.5

LON interface

5.6

Onboard I/O

Building Technologies
Fire Safety & Security Products
S1: Reset button
X1 X2
Fig. 9 NK823x internal DIP switch and jumpers (NKM8001-A2 mainboard)
NK8231.2, NK8232.2, NK8235.2 and NK8237.2: These models are equipped with
two serial lines available on the NK823x main board.
NK8235.4 is equipped with 4 serial interfaces (two on the main board and two on
an expansion module).
In all NK823x models, the first and the second serial port can be configured as an
RS232 interface using connector COM1 and COM2, or as an RS485 interface
using connectors X104 and X105.
All lines are fully RS232 compliant and have EMC/ESD protection.
NK8235.4: COM3 and COM4 do not support the hardware-handshaking signals for
modem control (Rx, TX, and GND only).
No galvanic isolation is provided; all serial lines have a common ground.
The NK823x Ethernet Ports do not have a LON interface and do not support CS6
Guarto intrusion detection systems (use NK822x instead).
The NK823x main board is equipped with three digital inputs (X102) and one relay
output (X101). The input signals can be used individually or combined together for
power supply supervision application.
NK823x Structure and Functions
S2: Tamper switch
X102
X101
X3
048_DMS_NK8000_ICC_MP4.40_A6V10062437_a_en.doc
X103
X104
X105
X111
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06.2011