Breakout Boards

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

Isolated CNC INTERFACE

Parallel Port Breakout Board Features:

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

The PBX-RF is an Isolated Parallel Port Breakout Board designed specifically for Hobby CNC machines. It is compatible with a variety of Parallel Port CNC Control Software. The isolation layer protects the PC from potential damage from spikes or short circuits on the high voltage motor drivers used in CNC.

The RF isolation chips used in the PBX-RF work much like opto-isolators, except that they use radio waves to send signals across the isolation plane rather than light.

The PBX-RF breakout board splits the 17 available signals from the parallel port so that they can be accessed. It is functionally equivalent to the non-isolated version - the PBX-2.

Hardware Features:

• 4 axis USB CNC controller
• USB (V2.x) from PC/Laptop running Windows XP, Vista or Windows 7 (32 bit or 64 bit)
• 3 digital outputs (flood, mist, spindle)
• 25 KHz maximum step frequency
• 12us minimum pulse width
• Buffered I/O for maximum performance
• Two manual jog input keys per axis (8 total)
• Two limit switches for X,Y, Z (6 total)
• Jog Pendant Interface
• Relay Board Interface
• I2C Interface
• E-Stop Loop

Software Features:

• Advanced interpolation algorithms
• Control external devices with I2C protocol
• Pause/resume of execution supported
• Automatic homing procedure
• Touch Plate Tool Change Procedure
• Standard RS274/NGC G-code (EMC2 compatible)
• Toolpath simulation
• Advanced G-codes - G40, G41, G42 (Cutter Radius Compensation) supported
• Advanced G-codes - G43, G49 (Tool Length Offsets) supported
• Advanced G-codes - G54, G59.3 (Coordinate System Origins)

The USB CNC Control Software can be purchased from us by choosing the software option below. Otherwise, you can purchase it directly from www.planet-cnc.com. Software is supported through the Planet-CNC Google Group.

Download CNC USB Controller Software

* Note - the PBX-USB does not work with the Planet CNC SDK