New here . Help/Advice on Cnc Router repair

[john swift]

Yes , in Mach3 the first printer port can only provide 5 inputs (for E-stop & limit switches etc)
and 12 outputs that you can assign to control your motors , relays etc

printerport pinout

PDF manual
http://www.machsupport.com/wp-conten...all_Config.pdf

I assume when your machine was built
printers and printer cables had the original 36 way Centronics connector


to connect to your PC's 25 way D-type printer socket

use a 25 pin male to male printer cable and
to save soldering a connector / adaptor like this :-
https://www.ebay.co.uk/itm/222305065110


the 25 way D-type connector are less expensive than 36 way centronics connectors

In addition you need a +5V supply to connect to the G201 stepper drivers & solid state relays

this can be taken from your PC
as can a 12V supply for the fan



John

PS
this is the Mach pins & ports page to find the pins assigned to control your stepper motors