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NK-IPS Installation Guide (v5.0) Hardware Overview • 13
Hardware Overview
This chapter presents information on the NK-IPS front and rear panels.
Front Panel Overview
The NK-IPS front panel includes status LEDs for T-Bus and network activity, as well as a RESET button.
Figure 3.1 NK-IPS — Front Panel Overview
1. Heartbeat
The NK-IPS reports the status by a pulsating LED, called a heartbeat.
2. Reset Button
The
Reset
button can be used in the event of device failure where the Heartbeat stops pulsing, the ETHERNET
LNK LED turns off, or the ETHERNET ACT LED stops flashing. In some cases, looping or daisy-chaining too
many devices on one line may cause a communication failure or a power dropout (with devices that are supplied
phantom power via the T-Bus line).
The
Reset
button can be used as a last resort if errors are encountered, but no physical problem can be sourced
(disconnected or severed CAT5, power cable, etc.). Pushing the
Reset
button resets the NK-IPS.
3. T-BUS COMM LEDs
The front panel includes eight T-BUS LEDs that each represent a T-BUS connector on the rear panel of the NK-IPS.
These LEDs will light when data is transmitted to, or sent from, the NK-IPS.
4. ETHERNET COMM LEDs
1) Heartbeat 3) T-BUS COMM LEDs
2) Reset Button 4) ETHERNET COMM LEDs
Heartbeat Behavior Display and Description
Flickers A switch message is handled by the NK-IPS
Dims Indicates a handled message that did not result in a switch
Flashes rapidly An error condition is reported by the power supply
Table 3.1 Front Panel LEDs
LED Status Description
LNK Green A valid physical ethernet connection is established, and the port is
active. There is data transfer activity on the indicated Ethernet port.
ACT Flashing
Green Network activity is transmitted or received.
NK-IPS Network Bridge
ETHERNET
LINK ACT 1 2 3 4 5 6 7 8
T-BUS
RESET