PMDX 411 and Connecting Proximity Sensors

[Home CNC]

For my limit switches can I connect my proximity sensors directly to the parallel port pins?

I was planning to use X Y and Z two sensors each in parallel on pins 11,12 and 13.

Can I connect the switches with brown wire to 24 volt from the main board, blue wire to ground and black wire to the respective pin 11-13?

They are NPN switches.

[12strings]

Hard to say.  I would not recommend it.  Ultimately it depends on how much of the 24V leaks onto the output of teh prox sendor and what kind of protection circuitry the PMDX-411 has inside it.  The PMDX-411 is really designed to connect to systems or break-out boards that provide interfaces to (and protection from) prox sensors.