As you see above improper? grounding or just EMI from servos messed things up with my board and it was doing strange things. Make sure you properly isolate it from noise, cables included.

About the parallel, its in the manual i believe.


Take a notice what they say there page 16:
DB-25 (LPT-port) IO connectorWarning: on PoKeys57CNC v1.1 the pinout is not compatible with the LPT-based stepper drivers sincethe physical pin numbering sequence in PoKeys57CNC v1.1 differs from that of a real DB-25connector. Check the pinout diagrams above.