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

[Caldwell22]

John ,

Thank you very much for all your help .

I will order the c10 break outboard and wire as stated in the ports/pin lay out in mach3.
Then i assume i will need the adapter you have linked on ebay to connect to the pc printer port cable. so will order those .

the limit switches that are in place on the machine have never worked since ive had it so will get those up and running all at the same time using the attachments you have provided.

Thanks again

[john swift]

Hi Adam

you only need to use the C10 BOB or screw terminal 25 way socket
not both

the C10 BOB has the advantage of buffering the inputs & outputs to & from the printerport
also it gives the printerport some protection

the 3 year old PC I an using to connect to the net has a printerport that works at 3.3V logic levels not the 5V levels of the old IBM PC I have for CNC projects

when you moved the machine did you lose a 5V + 12V power supply ?

its possible to take the supply from the PC

John

[john swift]

Hi Adam

Just double checked and the C10 has a 25 pin plug


to connect it to the 25 way socket on a PC
you need a printer extension cable with male and female ends

not a printer cable with two male ends !

John

[john swift]

Hi Adam

while your photo is a bit too low a resolution
this a little more of the wiring of your box
from what I can see









John