HS-NCM Installation Document — P/N 54014:C1 12/15/2020 17
LED Indicator LED Description LED Color LED State
PWR Onboard +3.3V Power Green On steady when power is applied. If off, check the power wiring or the NUP
connection.
PWR FAIL Onboard Power Tolerance Yellow Normally Off. On steady when on-board power supply is out of tolerance. Contact
Customer Service for replacement.
WDT Watchdog Status Yellow Normally Off. On steady after any firmware upgrade that requires a power cycle.
Typically, kernal or boot upgrades will result in a cycling of power. If remaining On
following any power cycle other than one caused by a firmware upgrade, this
indicates a watchdog failure. Contact Customer Service for replacement.
DATA A Channel A Network Activity Green Blinks On when data is received.
DATA B Channel B Network Activity Green Blinks On when data is received.
LINK A Channel A Link Green On steady when link is established. If off when NFN is connected, check NFN wire
and/or fiber connections.
LINK B Channel B Link Green On steady when link is established. If off when NFN is connected, check NFN wire
and/or fiber connections.
NUPA TX NUPA Transmit Green Blinks On when data is transmitted. If not periodically blinking, check the NUP cable
for connection and integrity.
NUPA RX NUPA Receive Green Blinks On when data is received. If not periodically blinking, check the NUP cable for
connection and integrity.
NUPB TX NUPB Transmit Green Blinks On when data is transmitted. If not periodically blinking, check the NUP cable
for connection and integrity.
NUPB RX NUPB Receive Green Blinks On when data is received. If not periodically blinking, check the NUP cable for
connection and integrity.
USBA USBA Data Link Green On steady when USB data link is established. If communication can not be
established, check the USB wire for connection and integrity.
USBB USBB Data Link Green On steady when USB data link is established. If communication can not be
established, check the USB wire for connection and integrity.
10/100 Ethernet frames receive Green Steady, Blinks when data is received.
10/100 Ethernet frames transmit Green Steady. Blinks when data is transmitted.
NFN A Network test LED Yellow (Wire Only) Blinks On during communications failure. If On, check NFN wiring
integrity and Port Mode mismatch. Refer to page 8 for Port Mode settings.
(Fiber only) Blinks On during fiber module failure. If on, contact Customer Service for
replacement.
NFN B Network test LED Yellow (Wire Only) Blinks On during communications failure. If On, check NFN wiring
integrity and Port Mode mismatch. Refer to page 8 for Port Mode settings.
(Fiber only) Blinks On during fiber module failure. If on, contact Customer Service for
replacement.
ACTIVE Program Status Green Blinks On when a program on the HS-NCM is operating normally.
PROGRAM Flash Programming Yellow Blinks On during Flash programming. DO NOT REMOVE POWER WHEN FLASH
PROGRAMMING!
Table 6 Diagnostic Indicator Functions and Colors
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