Eric,

I figured you new the basics about PLCs and PICs.

I have posted a universal 877 PCB in the schematics forum. I can also post a generic I/O PCB if you are interested. The I/O board interfaces to the 877 board. I can't give away the artwork used to create the actual PCB but I can post the schematics or sell the blank boards for cheap. PM me if you are interested in this.

Regards,

Joe Kupcha