Omron CP1H CPU Operation Manual page 459

Analog I/O Units
Note
+
Analog
device
with
−
voltage
output
V OUT
Analog
I OUT
I/O Unit
COM
Note
Terminal Arrangements
NC NC
I OUT V IN0 COM0
NC NC
V OUT COM NC NC
For current inputs, short V IN0 to I IN0 and V IN1 to I IN1.
V OUT Voltage output
I OUT Current output
COM Output common
V IN0 Voltage input 0
I IN0 Current input 0
COM0 Input common 0
V IN1 Voltage input 1
I IN1 Current input 1
COM1 Input common 1
Wiring for Analog Inputs
V IN
Analog
I IN
I/O Unit
COM
Wiring for Analog Outputs
Analog
+
device
with
−
voltage
input
(1) Use shielded twisted-pair cables, but do not connect the shield.
(2) When an input is not being used, short the + and − terminals.
(3) Separate wiring from power lines (AC power supply lines, high-voltage
lines, etc.)
(4) When there is noise in the power supply line, install a noise filter on the
input section and the power supply terminals.
I IN1 AG
I IN0 V IN1 COM1
Analog
+
V IN
device
I IN
with
−
current COM
output
V OUT
Analog
I OUT
I/O Unit
COM
Section 7-4
Analog
I/O Unit
+ Analog
device
with
−
current
input
425