Omron CQM1 User Manual

22
Wiring Section 3-2
3-2 Wiring
Wiring between the B7A Interface Unit, input B7A Link Terminal, and output
B7A Link Terminal sharing a single power supply differs from wiring between
Units using independent power supplies as shown in the following diagrams.
Standard Transmission Delay-time Link Terminal
Single Power Supply
Independent Power Supplies
Note 1. The transmission distance depends on the type of wiring used.
2. The size of terminal screw differs for the B7A Interface Unit and B7A Link
Terminal. Consider the size of the terminal screws when using crimped ter-
minals.
B7A Interface Unit
B7A Link Terminal
+
12 to 24 VDC
–
–
Transmission distance: 100 m max.
Transmission cable: VCTF 0.75 mm
2
min.
B7A Link Terminal
Terminal screws: M3
Terminal screws: M3.5
B7A Interface Unit
B7A Link Terminal
+
+
+
12 to 24 VDC
12 to 24 VDC
12 to 24 VDC
Transmission distance: 500 m max.
Transmission cable: VCTF 0.75 mm
2
min.
–
–
B7A Link Terminal
Terminal screws: M3
Terminal screws: M3.5

Omron CQM1 Specifications

General

Model	CQM1
I/O Capacity	Up to 256 I/O points
Programming Language	Ladder Logic
Timer/Counter	128 timers/counters
Operating Temperature	0 to 55°C
Humidity	10 to 90% RH (non-condensing)
Power Supply	24 VDC or 100-240 VAC
Communication Ports	RS-232C
Memory Capacity	3.2K words
Instruction Set	Basic and advanced instructions
Memory	RAM (battery-backed)
Program Memory	3.2K words
Storage Temperature	-20 to 75°C