Mk 2 Mach3 parallel port mapping

 

On the Stepper Controller PCB we are only driving Axis X & Y.  All other functions are driven via the custom Interface PCB.

Parallel Port Pin Physical Pin direction Mach 3 mapped function Stepper Controller PCB function Interface board function Interface board port/pin  Note
1 In/Out Enable All Enable All  -    
2 Out x Step x Step  -    
3 Out x Dir x Step  -    
4 Out y Step y Step  -    
5 Out y Dir y Dir  -    
6 Out Output 1 - Custom command bit 0
 B4  
7 Out Output 2 - Custom command bit 1
  B5  
8 Out Output 3 - Custom command bit 2
  B6  
9 Out Output 4 - Custom command bit 3
  B7  
10 In Limit Y -      
11 In Limit X -      
12 In  - -      
13 In EStop -      
14 In/Out Output 5
 - Custom command bit 4
  B2
15 In   -    
16 In/Out Output 6 - Custom command bit 5
  B3
17 In/Out Output 7 - Custom command go
  B0 PIC INT0
18-25 Gnd
       

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