new cnc cape

Hello, everyone .
I’m new drawing a cnc cape sch…
It‘s with 19 Optocoupler isolation INPUT(11 INPUT use for MPG ,) and 16 Non-Isolated OUTPUT (use 74ls244 )
I use mcp23017 i2c bus for 16 input(for limit --max/min/home etc.)…

BUT, I’m not a electronic engineer,so Dare not confirm right。。
Hope electronic engineer proofreading.

6 aixscnc cape.pdf (734 KB)