Internal Dip Switches - Siemens NK8237 MP4.81-01 Installation Manual

Structure and functions
4
NK8237 hardware
6.1.2
18
Building Technologies
CPS Fire Safety
Diagnostics (yellow LED)
Internal interface diagnostics:
Off
: status OK.

Blinking (fast)
: booting operating system after restart.

Blinking (1 flash)
: missing or insufficient license.

Blinking (2 flashes)
: trouble with the I

Blinking (3 flashes)
: not used

Blinking (4 flashes)
: trouble with the serial/network interface.

Blinking (5 flashes)
: trouble with DLL or RCLOCK file(s).

Blinking (6 flashes)
: IEC GW trouble.

– SW trouble.
– No communication to FS20/FS720 or to the IEC Master.
On
: critical/hardware fault.

Right Side LEDs
The four LEDs on the right side are, from top to bottom:
Name Function
Com1 Status Com1
Com2 Status Com2
Com3 (not used) Status Com3
Com4 (not used) Status Com4

Internal DIP switches

The internal DIP switches (S101) enable a download session via FTP using a
default IP address and the NK823x Web Server.
Internal switch Functions
DIP switch 1 Default mode/network access: If DIP switch 1 is ON, a Secure Download
connection occurs by default on the Ethernet 1 at the default IP address
192.168.9.41 and the NK823x Web Server is enabled.
DIP switch 2 Default mode/network access: If DIP switch 2 is ON, a Secure Download
connection occurs by default on the Ethernet 2 at the default IP address
192.168.10.41 and the NK823x Web Server is enabled.
DIP switch 1 and 2 Default mode/network access: If DIP switch 1 and 2 are ON, the passwords
of the NK823x Web Server are set back to the default values.
C bus to I/O modules.
2
Red: RX
Green: TX
A6V10854379_a_en
30.11.2017