PC with EMC2 MESA 5I20 PC Interface MESA 7I48 6 channel Analog servo interface MESA 7I37 An 8 output 16 input isolated I/O card. Servo Motor Driver Motors E - Stop Run Limit Switches Home Fault Inputs Outputs Z X Y Spindle Encoder MESA EMC2 Lathe/Mill configuration. Block diagram for EMC’s CNC control of a mill or lathe. The spindle can be a simple on, off control as for a router or plasma or variable speed via the analog card. This could be either a VFD or a high speed servo motor. Additional I/O cards can be added if more I/O is required.  This can be for items like tool changers, over travel limits, lights and pumps.