5
effectively de-energizing all outputs and putting the SIS into a safe state. It is necessary to de-energize
node processor card to put card in normal function again.
Each Ethernet port on the card has two LED’s: The top LED turns on whenever there is transmit / receive
activity. The bottom LED on the Ethernet port indicates the link status: If the link is functioning normally, it
will turn on.
Power
ON
Power on and within limits
OFF
Power off or error
Transmit/Receive
ON
Message transmit/receive
OFF
No link activity
Link Status
ON
Link is functioning normally
OFF
Link error
Node Processor Status
ON
Primary, no errors (If Power
LED is ON)
If Power LED is OFF and NP
Status LED is ON it indicates
that Node is in Reset because
WWDT/WDT is expired or
board/CPU temperature was
too high or 2-0 Tolerance Time
is expired
1 Blink
Primary, chassis/card error or
forced read-only variable
2 Blinks
Redundant, no errors
3 Blinks
Redundant, chassis/card error
or forced read-only variable
4 Blinks
Bootloader mode
6 Blinks
Node Processor Offline
OFF
No valid Program loaded
Figure 1: 3000/06 Node Processor Front Panel
Host Network A
I/O Network B or
Host Network B
I/O Network C
I/O Network D
Transmit/Receive
Link Status
Transmit/Receive
Link Status
Transmit/Receive
Link Status
Transmit/Receive
Link Status
Node
Power
Processor
Status
3000/06
