Structure and functions
4
NK8237 hardware
17
Building Technologies
A6V10854379_a_en
CPS Fire Safety
25.01.2019
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
2
C bus to I/O modules.
⚫
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
Red: RX
Green: TX
Com2
Status Com2
Com3 (not used)
Status Com3
Com4 (not used)
Status Com4
6.1.2
Internal DIP switches
The internal DIP switches (S101) enable a download session via FTP using a
default IP address.
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.
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.