i am working on installing a SuperPid onto a 611. I have a question about this schematic
It shows the TACH output going straight back to the PC through the Parallel Port. I think I am Missing something here. How does it actually connect back to the PC?
I am using Mach3, ESS, & G540.
I assume that this wire should go to one of the Inputs (PIN1-4) on the G540.
Can someone please help clarify this for me?