Neousys Technology POC-400 Series, User Manual, Page: 87 / 99

POC-400 Series
87
Using DIO Function (With MezIO-R12 Installed)
Wiring for DIO
The digital input function of System series is implemented using a photo-coupler with
an internally series-connected 1
kΩ resistor. You need to provide a voltage to specify
the logic high/low state. The input voltage for logic high is 5~24V, and the input
voltage for logic low is 0~1.5V.
The digital output function of System series is implemented using Power
Analog Device iCoupler® component. The DO channels are configured as NO
(normally-open) configuration. When you turn on system, all DO channels have a
deterministic state of logic 0 (circuit disconnected from GND return). When logic 1 is
specified, MOSFET is activated and GND return path is established. The digital
output function on System series supports sinking current connection. The following
diagrams are the suggested wiring for DO: