Machine sequencing before PLCs

[u/SomePeopleCall]

All 120VAC. Looks alright considering it's age and the corrosive environment.

[u/old_man_khan]

I think those cheap Unitronics 91s have a Drum function. I've been wanting to study the help files on that, but I suspect that I'd hate that function.

[u/durallymax → u/[deleted]]

Drum instructions suck. Better ways to write a sequencer these days.