Omron CRT1 - 10-2008, Operation Manual

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Power Supply Wiring Section 3-5
(2) Do not supply communications power to the trunk line and a sub-trunk
line or to two sub-trunk lines from the same power supply. Also do not
supply communications power to two or more CompoNet systems from
the same power supply. The quality of communications will decrease and
normal remote I/O communications may not be possible.
(3) The I/O power supply to multi-power supply Slave Units may be a source
of noise depending on the connected devices. Even when supplying the
communications power supply together to all Slave Units, use a separate
I/O power supply so that noise does not affect the network.
Restrictions The following restrictions apply when supplying communications power
through Round Cable II or Flat Cable I/II.
• The communications power supply can be connected at only one location
for the trunk line and one location each for the sub-trunk lines.
• Communications power to the trunk line can be supplied only through the
communications power supply connector on the Master Unit. Communi-
cations power to a sub-trunk line can be supplied only through the down-
stream port communications power supply connector on the Repeater
Unit. Communications power cannot be supplied at any other location.
Power can be supplied here.
Communications
power supply
Power can be
supplied here.
Trunk line or
sub-trunk line
Sub-trunk line
Repeater Unit
Repeater Unit
Communications
power supply
Communications
power supply
Trunk line or
sub-trunk line
Sub-trunk line
Communications
power supply
Slave Unit
Slave Unit
3 m max.
Power cannot be
supplied here.
Power cannot be
supplied here.
Round cable II or
Flat Cable I/II
Round cable II or
Flat Cable I/II
Round cable II or
Flat Cable I/II
Round cable II or
Flat Cable I/II
Master Unit/
Repeater
Unit
Master Unit/
Repeater
Unit