Omron CRT1 - 10-2009, Operation Manual

Page: 68 / 675

44
Communications Cable Wiring Examples
Section 2-4
Slave Units can also be connected in parallel using multidrop connections.
BDL BDH BS- BS+
BDL
BDH
BS-
BS+
BDL BDH BS- BS+ BDL BDH BS- BS+
Master Unit or
Repeater Unit
Terminating Resistor
(121
Ω
)
Two communications
signal lines
Two communications
power lines
Relay terminal block
Open Connector
Slave Unit
Slave Unit Slave Unit
Open Connector
24-VDC
communications
power supply
Communications
power supply
connector
Communications
power
BDL BDH BS- BS+
BDL
BDH
BS-
BS+
BDL BDH BS- BS+ BDL BDH BS- BS+
Master Unit or
Repeater Unit
Terminating Resistor
(121
Ω
)
Two communications
signal lines
Two communications
power lines
Open Connector
Slave Unit
Slave Unit
Slave Unit
Open Connector
Communications
power