Siemens Advance Network Gateway User Manual page 59

ANCB LEDs Description and Operation,
Ethernet Controller -
10BaseT / 10Base2
Ethernet HUB -
2000590-001
The Green TX LED blinks whenever a message is transmitted on the
Ethernet channel. The Green RX LED blinks whenever a message is
received on the Ethernet channel. The Red CL LED indicates there was
a collision on the Ethernet. Note: collisions are a normal occurrence on
an Ethernet network. The Red JB LED indicates that the Ethernet con-
troller has determined that the transmitter has remained on for longer
than allowed and indicates a possible hardware problem.
The bi-colored LED's marked CL, BNC, and TP are used as indicators
for the Ethernet HUB. The HUB provides the 10BaseT and 10Base2
ports. The LED's indicate the following information.
CL
Steady Green indicates a FIFO error
Steady Red indicates a Collision on the HUB ports
(Receiving on one port while transmitting another)
BNC
Blinking Red indicates a packet is being transmitted.
10Base
Blinking Green indicates a packet is being received.
T Port
Alternating Red/Green indicates the 10Base2 port is
Partitioned Out (Disabled).
TP
Steady Green indicates the 10BaseT port is receiving the Link
10Base
Integrity Pulse (Keep Alive signal)
T Port
Blinking Red indicates a packet is being transmitted.
Blinking Green indicates a packet is being received.
Steady Red indicates the Polarity is reversed on the 10BaseT
port.
Alternating Red/Green indicates the 10BaseT port is
Partitioned Out (Disabled).
Continued
Troubleshooting 51