Appendix B
Troubleshooting
©
National Instruments Corporation
B-3
Caution
Do
not
power down the FBUS-HSE/H1 LD while the
PROCESS
LED is lit.
The green
PROCESS
LED is lit when you update the nonvolatile flash
memory of the FBUS-HSE/H1 LD. If you want to change network settings,
save channel settings or power-up values, or upgrade its firmware, you need
to update the nonvolatile flash memory.
The red Ethernet
STATUS
LED is lit when the FBUS-HSE/H1 LD detects
an error. The FBUS-HSE/H1 LD indicates specific error conditions by
flashing
STATUS
LED a specific number of times. Table B-1 describes the
STATUS
LED flashing sequences and the corresponding error conditions.
The green
TX
LED is lit when the FBUS-HSE/H1 LD transmits data over
the Ethernet.
The green
RX
LED is lit when the FBUS-HSE/H1 LD receives data from
the Ethernet. Because of unrelated network traffic, this LED blinks
occasionally even when the FBUS-HSE/H1 LD is inactive.
The green
LINK
LED is lit when the FBUS-HSE/H1 LD is connected to
an active Ethernet segment.
