The latest cnc machines are controlled via gcode and grbl, repetier, or Marlin based controllers. Using mach 4 is a bit like using Windows to set up a file server.

IIoT will lead to increased efficiencies in CNC machines, resulting in lower wastage, lower costs and decreased downtime by allowing for predictive maintenance. Harnessing the improved efficiencies ...

They are not the stiffest machines, but lots of folk are making pcbs on them. Engineer in Wonderland CNC-related blogs are indexed here. Something that is missing when they are bought is automatic end ...