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Connecting to the Network
3-8 Installation
Figure 3-3 Connecting a Fiber Optic Segment to the Module
4. Verify that a link exists by checking that the port RX (Receive) LED is ON (flashing amber,
blinking green, or solid green). If the RX LED is OFF and the TX (Transmit) LED is not
blinking amber, perform the following steps until it is on:
a. To view the receive and transmit activity on a group of segments, press the GROUP
SELECT button (see Figure 3-3) to step to the appropriate group. Each time the GROUP
SELECT button is pressed, the GROUP LED lights up in sequence, indicating which Group
is selected. On the 6H308-24 you can step to 1 or 2 for Group 1 or 2. On the 6H308-48, you
can step to 1, 2, 3, or 4 for Groups 1 through 4. The receive and transmit activity for that
group of segments is then indicated by the RX and TX LEDs for each segment.
b. If there are separate fiber optic connections on the other device, check the crossover of the
cables. Swap the cable connections if necessary.
3549_04
RESET
C
O
M
CPU
1X
G
R
O
U
P
1
GROUP
GROUP
SELECT
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
12X
MT-RJ Port
Fiber Optic Cable
Release Tab
FAST ENET
6H308-24
Transmit (TX)
Receive (RX)
6H308-24
Group Select
Button
Group Indicators
12X
RX TX
12X
RESET
C
O
M
CPU
GROUP
GROUP
SELECT
4
1X
G
R
O
U
P
3
1X
G
R
O
U
P
1
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
RX TX
FAST ENET
6H308-48
6H308-48