Omron 3G8F7-CRM21 User Manual page 189

Wiring for a CompoNet Network
Open Type Connector
Communications power supply connector
Master Board or
Repeater Unit
Communications
power supply, 24 VDC
Communications
power supply
Relay terminal block
BS+
BDH
BDL
BS
Open Type Connector
BS+ BDH BS
BDL
Open Type Connector
Multidrop Connectors can also be used to connect the Slave Units in parallel.
Master Board or
Repeater Unit
Communications
power supply
BS+
BDH
BDL
BS
BS+ BDH BDL BS
Slave Unit
Open Type Connector
BS+
BDH
BDL
BS−
You can also use the DRS1-T Terminating Resistor for termination.
If you do, insulate the ends of the BS+ and BS− lines.
Communications power supply lines (2)
Communications signal lines (2)
Slave Unit
Slave Unit
BS+ BDH BS
BDL
Communications signal lines (2)
Communications power
supply lines (2)
BS+ BDH BDL BS BS+
Slave Unit
Terminating Resistor (121 Ω)
Insulated.
Section E-3
Terminating
Resistor (121 )
Slave Unit
BDH BS
BS+ BDL
Terminating
Resistor (121 )
BDH BDL BS
Slave Unit
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