Hi, I hope you're all doing fine.
I was checking the open source PLC project available on this link :
http://startingelectronics.com/projects/small-open-source-PLC/
and here is its IO board :
http://startingelectronics.com/projects/small-open-source-PLC/PLC-components/OSPLC1_IO.pdf
I couldn't figure the purpose of the diode shown in the attached picture, any ideas ?
Thanks in advance.
I was checking the open source PLC project available on this link :
http://startingelectronics.com/projects/small-open-source-PLC/
and here is its IO board :
http://startingelectronics.com/projects/small-open-source-PLC/PLC-components/OSPLC1_IO.pdf
I couldn't figure the purpose of the diode shown in the attached picture, any ideas ?
Thanks in advance.
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