beta bulleri for retrofit?

Thanks, I'm on the way to a solution for the drivers, what's left of the cables is clear to me, and the rest are: analog +-10v signals, one 25pin input cable, which are partly connected as soon as the machine is turned on, and partly I realized which ones are for homing and for inductive sensors from the tool. and this 25 pin output cable remains, there are a total of about 10 outputs, my plan is to activate them all manually, together, by hand out of 7i77card, to see what will happen on the other side of the machine where this TB3 (see schematic) terminal block is. the cable from the pendant remained, that is, the one  from external buttons to the controller, I mean jog, feed override, spindle override, axis select, step select, estop. I will have to find a way to activate the K1 switch, it turns on the drivers, but also to connect the estop to turn it off. My question is, do I need analog inputs for the pendant later, or could a configuration be made using buttons and potentiometers that would support mpg, potentiometers and buttons with digital inputs?