ESD in a logic Diagram

New to the engineering side of things. Logic Diagrams, I've been asked to draw one, are these common place? I'm all for Boolean but, how do you put an ESTOP in logic. Set and Reset? Help it's Friday.

We refer to them as functional diagrams but they're basically logic diagrams. We have a lot of hard wired interlocks that interface with the equipment as well so I use dashed lines for PLC logic and solid lines for real world stuff so that the techs aren't looking for something that doesn't exist in a relay cabinet somewhere.