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5.2 Connections
Use a straight-through CAT 5/6 Ethernet cable to connect the Relay Card’s RJ-45 Rabbit-
Net jack to a RabbitNet port on the master. You may use either port if you are connecting
to a master such as the BL2500 that has more than one RabbitNet port.
NOTE: The RJ-45 RabbitNet jacks are serial I/O ports for use with a master and a net-
work of peripheral cards. The RabbitNet jacks do not support Ethernet connections.
Power-supply
cable
Master
X
RabbitNet
Ethernet
Some masters have only
one RabbitNet port and
do not have a friction-lock
power terminal.
Relay Card
J7
C2
C3
C4
C5
C6
C1
C7
R1
J4
R10
DS4
D4
DS1
C8
R7 D1
C9
R11
DS5
J5
D5
DS2
C10
R8 D2
C11
R12
DS6
J6
D6
DS3
C12
R9 D3
RP1
RP2
R25
R19
R20
R21
R22
R23
R24
C16
U3
C15
U2
Y1
U1
R29
R30
RP3
Q7
Straight-through
CAT 5/6 Ethernet cable
J9
NO K3 CM K3 NC K3
NO K4 CM K4 NC K4
NO K5 CM K5 NC K5
Figure 35. Connect Relay Card to Master
You will also have to provide a separate +5 V DC power supply to your Relay Card. This
power supply is connected via the polarized friction-lock terminal at header J7. You may
assemble a suitable cable using the friction-lock connectors from the Connectivity Kit
described in Section 1.1.3. If you are using a BL2500 as your master, you may draw this
power from the BL2500 as shown in Figure 35. See Section 5.2.1 for detailed wiring
diagrams.
At the present time, the number of peripheral cards you can use with one master is limited
by the number of RabbitNet ports on the master.
User ’s Manual
105
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