PBX-2 CNC Parallel Port Breakout Board

CNC INTERFACE

Parallel Port Breakout Board Features:

• DB25 Female
• Flexible Design
• Onboard LM-317 Based 1.5 amp Logic Supply Regulator
• USB Logic Power Supply
• Optional Pinheader and Screw Clamp Connections
• Jumper Enabled Limit Switch Pull-up Resistors
• LED Power Indicator
• All Pins Brought Out

**The PBX-2 is a non-isolated direct split connection to your drivers from your PC parallel port. Some PC parallel ports do not have the current carry capabilities to drive the opto-isolators in the drivers. If you do not know what your PC parallel port can drive, then pick the PBX-RF, which has isolation and step-up circuitry to drive opto-isolated drives.**

Schematic