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2 Setup
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CPS-PCS341EC-DS1-1201 Hardware Manual
Digital Input (DI)
Input equivalent circuit of digital input interface unit is shown in Figure 2.14. DI connects to a device
which can be current-driven such as switch or transistor output device. It inputs the ON / OFF state of a
device which can be current-driven as digital value. The signal input unit is Opto-coupler isolated input
(Corresponded to current sink output).
Figure 2.14. Digital input circuit
Example of connecting the product to an external device
Figure 2.15. Connecting the input to the sink type output
Vcc
Vcc
+12V
External device
Input
pin
Opto-coupler
Switch
Switch
Input
pin
O
pto-coupler
Minus
common
This Product
This Product
Input pin
Minus common
Sink type output
+12V