4. WIRING
IMR01Y09-E3
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4.3 Connection to DeviceNet
4.3.1 Connection outline of DeviceNet
The following diagram shows the configuration of a DeviceNet network.
Communication
power
Power
supply tap
T-branch
tap
T-branch
tap
Trunk
line
Terminating
resistor
Node
Drop line
Node
Node
Node
Trunk
line
Trunk
line
Trunk
line
Trunk
line
Terminating
resistor
Drop line
Drop line
•
Nodes:
There are two kinds of nodes of master and slave in DeviceNet. The master and slaves can be
connected at any location in the network.
•
Trunk/Drop lines:
The trunk line refers to the cable that has termination resistors on both ends. Cables branching from
the trunk line are known as drop lines.
Use the DeviceNet communication cable (thick or thin cable) for Trunk/Drop lines.
•
Connection methods:
Two methods can be used to connect DeviceNet nodes: The T-branch method and the multi-drop
method. With the T-branch method, the node is connected to a drop line created with a T-branch Tap.
With the multi-drop method, the node is directly connected to the trunk line or the drop line.
To prevent electric shock or instrument failure, turn off the power before
connecting or disconnecting the instrument and peripheral equipment.
WARNING
!
