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Installation
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CPSN-DI-16BCL Reference Manual (Hardware)
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33
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2.
Digital Input (DI)
For the CPSN-DI-16BCL, opto-coupler-isolated input (supporting current sink/source output) is used
for the digital input.
The digital input is connected to a device that can perform current driving such as a switch or
transistor output device. The ON/OFF state of the device is input as a digital value.
Between current sink and source outputs, between internal and external circuit power supplies are
switchable with the switch. Refer to "
Product Nomenclature and Function
details.
The input equivalent circuit of the digital input and the connection with the external device vary
depending on the I/O module and the current output direction, so see the following figure.
Digital Input circuit (External circuit power supply, current sink output)
Digital Input circuit (External circuit power supply, current source
output)
