
1.CONNECTING THE DeviceNet CONNECTION B-64044EN/01
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1.5 CABLE CONNECTION AND GROUNDING
Connect the cables to the connectors as shown in the figure below.
Power wire (V+)
Power wire (V-)
V+
Signal wire(CAN_H)
1
Power for
communication
DeviceNet
board
Connector
Drain wire/shield
32 4 5
Signal wire(CAN_L)
V- FG
Class-3 ground
Grounding of a network
It is recommended in the DeviceNet standard that grounding be
performed only in one place on a network to prevent a ground loop
from being formed and that grounding be performed in about the
center of a network. As shown above, connect the shield line of the
cable to the ground terminal (FG) of the power supply for
communication and perform class-3 ground.
When using multiple power supplies for communication, connect the
shield line to the ground terminal of the power supply that locates near
the center of a network and perform class-3 ground for the frame
ground terminals of the other power supplies without connecting to
the shield line. In addition, when using multiple power supplies for
communication, use the special power tap from other companies.
Master Power
supply
Slave
T
-branch tap or power tap
Master Power
supply
Slave
Power tap
Power
supply
Slave Power
supply
Grounding in one place near the center
Multiple power supplies for communication
One power supply for communication