Omron CJ Series Operation Manual page 148

4 Installation and Wiring
Using Round Cable I with Round Cable II, Flat Cable I, or Flat Cable II
In a CompoNet network, Round Cable I cables can be installed under the same Master Unit as Round
Cables II, Flat Cable I, or Flat Cable II cables as long as they are separated by a Repeater Unit.
Master Unit
BS+
BS-
BS+
BDH
BDL
BS-
Open Type
Connector
Trunk line
Open Type
Connector
Round cable I
Terminating
Resistor
Precautions for Correct Use Precautions for Correct Use
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.
4-40
Round cable I
Downstream port communications power supply connector
Overcurrent
protection (*1)
Repeater
(current limit: 4 A)
Unit
BS+2
BS-2
Port 1
BS+1
Port 2
BDH1
BS+2
BDL1
BDH2
BS-1
BDL2
BS-2
Branch
Port 1: Upstream
lines
Port 2: Downstream
Round Cable I Slave Unit
Overcurrent
protection (*1)
Repeater
(current limit: 4 A)
Unit
BS+2
BS-2
Port 1
BS+1
Port 2
BDH1
BS+2
BDL1
BDH2
BS-1
BDL2
BS-2
Branch
Port 1: Upstream
lines
Port 2: Downstream
Slave Unit
I/O power supply
V G
V
Power
G
supply
CJ-series CompoNet Master Unit Operation Manual for NJ-series CPU Unit (Cat. No. W493)
*1: When complying with UL standards, install a
Shared communications
device to limit the current between the
and I/O power supply
external power supply and the Unit to 4 A or
less for the communications power supply.
V
Power
supply
Round Cable II, Flat Cable I, or Flat Cable II
G
Sub-trunk line
Slave Unit
Slave Unit
Shared communications
and I/O power supply
V
Power
supply
Sub-trunk line
Round Cable II, Flat Cable I, or Flat Cable II
G
Multi-wiring
Connector
Slave Unit
Slave Unit
V G
Multi-power supply
Terminating
Resistor
Slave Units
with network power supply
Terminating
Resistor
Slave Units
with network power supply