Omron CJ Series Operation Manual page 93

Multidrop connections can also be used to connect the Slave Units in parallel.
Master Unit or
Repeater Unit
BS+
BDH
BDL
BS−
Commu-
nications
Open Type Connector
BS+
Open Type Connector
Communications
power supply, 24 VDC
CJ-series CompoNet Master Unit Operation Manual for NJ-series CPU Unit (Cat. No. W493)
Communications
Slave Unit
BS− BS+
BDH BDL BDH BDL
Communications
power supply, 24 VDC
Communications
Slave Unit
Slave Unit
BS− BS+ BS−
BDH BDL
Communications
power supply, 24 VDC
3 Wiring Configurations
Terminating
Resistor (121 Ω)
3
3-5