Specifying a PLC

[jake]

As an individual who has absolutely no experience in PLC's, I need to start somewhere. Apparently I need to select my PLC in part by determining the number of inputs and outputs I need. Should I count one input for each sensing device (photo eyes or prox switches in this case) and one output for each reacting device (motors)? Or is there more to it? I do have some associates with more experience . . . on vacation right now. I'd like some input. Thanks

 

[Deke]

Hi Jake,

Now I'm no expert, but have read that when selecting the size(number of I/O) of the PLC, that you should add 40% of what is needed, just incase you may have missed something or mainly for future expansion of the thing that the PLC will be used on.

Hope this helps!
Deke