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Wiring Methods Section 2-4
This example shows a DCN2-1 T-branch Connector, but the connection
method is the same for other T-branch Connectors.
Connecting to a Terminal Block
When a node is connected directly to the end of the trunk line and there isn’t
enough space to connect a T-branch Tap, a Terminal-block Terminating Resis-
tor can be connected with a multi-drop.
A 121
Ω terminating resistor is built into the DRS1-T Terminal-block Terminat-
ing Resistor. To connect the cable to the Terminating Resistor, attach crimp
terminals to the signal wires and securely screw the terminals to the Terminal-
block Terminating Resistor.
Note Use the DeviceNet cable for the connection to the DRS1-T Terminal-block Ter-
minating Resistor and keep the cable length less than 1 m.
Use standard M3 crimp terminals and tighten to a torque of between 0.3 and
0.5 N
⋅m.
!Caution To avoid damaging the cable or breaking wires, leave some slack in the cable
so that it won’t be pulled too hard or bent too sharply when connecting. Also,
never put heavy objects on top of the cable.
Flat Cable
Attach a DCN4-TM4 Terminating Resistor to the DCN4-TR4-1 Flat Connector
Socket connected to Communications Cable.
Trunk line
Terminator
T-branch
Connector
Branch line
1 m max.
Trunk line
Red (V+)
Black (V
−)
White (CAN H)
Blue (CAN L)
Terminal-block
Terminating Resistor
Node
Node at end
of trunk line
Insulate the power wires with
tape or heat-shrink tubing.
6.0 mm max.
6.0 mm max.
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