Omron CRT1 - 10-2009, Operation Manual

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82
Connecting Cables and Terminating Resistor
Section 3-4
3-4-4 Connection Locations for Terminating Resistor
A Terminating Resistor must always be connected to the trunk line and each
sub-trunk line on the opposite end from the Master Unit or Repeater Unit.
Note (1) Do not connect the Terminating Resistor at the same end of the cable as
the Master Unit or Repeater Unit.
(2) When the cable is branched at the locations shown in the figure below,
connect the Terminating Resistor at the end of the line so that the length
of a is greater than b.
Round Cable I
Connect the cable wires to a DRS1-T Terminating Resistor.
Master Unit
Trunk line
Connect the Terminating
Resistor on the opposite
end of the trunk line from
the Master Unit.
Terminating Resistor
Repeater
Unit
Sub-trunk line
Slave Unit
Connect the Terminating
Resistor on the opposite
end of the sub-trunk line
from the Repeater Unit.
Slave Unit
Slave Unit
Terminating
Resistor
a
b
Cable length: a > b
Master Unit
Trunk line
Terminating Resistor
Repeater
Unit
Sub-trunk line
Slave Unit
Slave Unit
Round cable I
Terminating Resistor