Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

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High-speed Counters
Section 5-2
5-2-6 Pulse Input Connection Examples
Encoders with 24 VDC Open-collector Outputs
This example shows how to connect an encoder that has phase-A, phase-B,
and phase-Z outputs.
X/XA CPU Unit
Phase A
Black
Phase B
White
Phase Z
Orange
+Vcc
Brown
0 V
(COM)
Blue
24-VDC power supply
0 V
+24 V
Encoder
(Power: 24 VDC)
Example: E6B2-CWZ6C
(NPN open-collector
output)
008
(High-speed counter 0: Phase A, 0 V)
(Differential Input Mode)
009
(High-speed counter 0: Phase B, 0 V)
003
COM
(High-speed counter 0: Phase Z, 0 V)
(COM 24 V)
008
009
003
COM
0 V
24 V
Power
0 V
Encoder
Power supply
−
Shielded twisted-pair cable
(Do not use the same power supply as for other I/O.)
I
A
I
B
I
Z
Phase A
Phase B
Phase Z
+
CPU Unit