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PLC interface with optocouplers

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Yaroooo:
I've found an PLC circuit example with this schematics as output:



In this case there's OUT3 as microcontroller output and an optoisolator that drive a mosfet. Out VCC is 24v that is voltage to drive I/O of loads or other device I/O. OUT3S is output of module.

I can't correctly understand if it's working and if it's correct. Any opinions on this circuit?

Doctorandus_P:
Post a schematic.

Does it look like one of these?
https://duckduckgo.com/?q=plc+output+optocoupler+mosfet&iar=images&iax=images&ia=images

Yaroooo:
My image link didn't worked. I've updated my post.

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