4 - 7
4 Mounting and Wiring
E3NW-CCL CC-Link Digital Sensor Communications Unit User’s Manual (E431)
4-
2 W
irin
g
t
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e CC
-Lin
k Net
w
o
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4
4-
2-4 C
onnecting th
e Distr
ibuted
Sensor
Unit
The Sensor Communications Unit and Distributed Sensor Units are connected by a DS-Bus network.
Connect the communications cable to the DS-Bus communications connector on the Communications
Unit. Connect the Distributed Sensor Units with multidrop connections, i.e., connect the D+ and D-
terminals between consecutive Units. Supply power to the Distributed Sensor Units from a Unit Power
Supply (24 VDC). (Refer to
4-3 Connecting the Unit Power Supply
Precautions for Correct Use
•
You can connect up to eight Distributed Sensor Units to one Sensor Communications Unit.
•
Keep the total length of DS-Bus communications cables (L1 + L2 + ... + Ln) to within 30 m.
•
Turn ON the DS-Bus termination setting switch for the last Distributed Sensor Unit on the
DS-Bus network. Turn this switch OFF for all other Distributed Sensor Units.
4-2-4
Connecting the Distributed Sensor Unit
Sensor Communications Unit
DS-Bus communications cable
First Sensor Distribution Unit
• Termination setting switch: OFF
Second Sensor Distribution Unit
• Termination setting switch: OFF
nth Sensor Distribution Unit
• “n” is a maximum of 8.
• Termination setting switch: ON
L2
L1
Ln
Summary of Contents for E3NW-CCL
Page 1: ...E3NW CCL CC Link Digital Sensor Communications Unit User s Manual Cat No E431 E1 08 ...
Page 114: ...A Appendices A 34 E3NW CCL CC Link Digital Sensor Communications Unit User s Manual E431 ...
Page 116: ...B B 2 E3NW CCL CC Link Digital Sensor Communications Unit User s Manual E431 ...
Page 117: ......