110
CJ1W-SRM21 Master Unit for CJ-series PLCs
Section 4-3
Communications Connector Pin Arrangement
The BS+ and BS
–
terminals are internally connected.
The BS+ and BS
–
terminals are used to supply communications power supply
to the Slaves (they are not used for the Master Unit). When supplying commu-
nications power at the Slave, such as by using 2-conductor VCTF cable, con-
nect the BD H and BD L terminals.
Note
The signal wires for Special Flat Cable are shown in the following diagram.
Special Flat Cable can be easily connected to CJ-series Master Units
because the upper four pins of the communications connector have the same
pin arrangement (Special Flat Cable signal wires are connected in order, with
the communications power supply connected to the lower two pins.)
Communications Cable Crimp Terminals
The following table shows the recommended crimp terminals for the signal
wires connected to the communications connector. Use either of the following
cable crimp terminals.
Insert the cable into the crimp terminal and crimp the end section.
BS
−
BS+
BS
−
BDL
BDH
BS+
BS
−
BS+
BS
−
BDL
BDH
BS+
Screwless Terminals
FK-MCP1.5/6-STF-3.81
CompoBus/S
communications
cable
24-VDC communications
power supply
Screw Terminals
MC1.5/6-STF-3.81
CompoBus/S
communications
cable
24-VDC communications
power supply
Model
Manufacturer
AI-series AI0.75-8GY
(product code 3200519)
Phoenix Contact
H0.75/14
(product code 046290)
Weidmuller Co., Ltd.
Communications power (BS+) Brown
Communications data high (BD H) Black
Communications data low (BD L) White
Communications power supply – (BS–) Blue
Sleeve
Crimp terminal Cable