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Connecting Communications Cables to General-purpose Slaves Section 4-2
• Multi-drop Connections with Special Connector (Thin or Thick Cables)
A multi-drop wiring connector (sold separately) can be used to wire a
multi-drop connector for either thin or thick cables. This multi-drop wiring
connector is required to wire a multi-drop connection with thick cables,
which are too thick for two lines to fit into the connector provided with the
Units.
The multi-drop wiring connector cannot always be used with Master Units
or the CQM1 I/O Link Units because it may come into contact with the Units
mounted next to the Master Unit or the CQM1 I/O Link Unit. If this happens,
use a T-branch Tap to wire the connection.
4-2-3 Mounting Terminating Resistors
Terminating Resistors must be used at both ends of the trunk line.
Terminating Resistors
• T-branch Tap Terminating Resistors
A terminating resistor is included with the T-branch Tap. Clip the leads on
the resistor to about 3 mm and insert it into the T-branch Tap as shown in
the following diagram. The resistor can face in either direction.
• Terminal-block Terminating Resistors
A terminating resistor is built into the Terminal-block Terminating Resistor.
To connect the cable to the Terminating Resistor, attach standard M3
crimp terminals to the signal wires and securely screw the terminals to the
Terminal-block Terminating Resistor. Tighten to a torque of 0.3 to 0.5 N
⋅m.
6.0 mm max. 6.0 mm max.
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