C25XP Rev. 5 Breakout Board C25XP Multifunction CNC Board for Ethernet Smooth Stepper The C25XP is a professional CNC breakout board designed for the Ethernet Smooth Stepper motion controller. It converts the ESS IDC header connections into easy-to-wire screw terminals while adding safety monitoring, spindle control, relay outputs, optoisolated inputs, status LEDs, and 24V control-panel wiring for a cleaner Mach3 or Mach4 CNC control system. View ESS Controller View ESS + C25XP Bundle Add DIN Rail Support 51 I/OAcross 3 Ports Mach3/4Compatible 24VControl Wiring Rev. 5C25XP Board What the C25XP does The C25XP is the wiring and interface board for an Ethernet Smooth Stepper CNC controller. Instead of wiring directly to IDC headers, you get labeled screw terminals, status indicators, safety features, spindle-control outputs, and relay control in one professional breakout board. It is a strong choice for CNC routers, CNC mills, CNC lathes, plasma tables, laser tables, and Mach3/Mach4 control cabinet upgrades. Cleaner CNC wiring Converts Ethernet Smooth Stepper IDC header pins into screw-terminal connections for stepper drivers, servo drives, limit switches, home switches, E-stop, probe, spindle/VFD control, coolant, and relay-controlled accessories. Professional control cabinet setup Designed for organized CNC electronics panels with 24V control wiring, optoisolated inputs, relay outputs, spindle control, status LEDs, and DIN rail mountable installation. Official setup instructions, user manual, 3D model, and assembly video Use the links below for official CNC4PC setup details, the C25XP user manual, the C25XP Rev. 5 STEP model, and an assembly video. These resources are useful for wiring, cabinet layout, Mach3/Mach4 setup, mechanical fitment, and installation planning. View Official CNC4PC Setup Instructions View Official CNC4PC User Manual Download C25XP Rev. 5 STEP Model ZIP Watch C25XP Assembly Video Documentation and video resources are provided by CNC4PC and may include wiring diagrams, setup examples, configuration notes, technical specifications, and assembly guidance for the C25XP breakout board. Key board features Breakout board for the Ethernet Smooth Stepper motion controller 51 total I/O points across three ports 31 inputs and 20 outputs Screw-terminal connections for professional CNC wiring Status LEDs for input, output, and system diagnostics DIN rail mountable design for control panel installation Software compatibility Compatible with Mach3 CNC control software Compatible with Mach4 CNC control software Designed to work with the Ethernet Smooth Stepper Supports Safety Charge Pump integration with Mach3/Mach4 Suitable for ESS-based CNC router, mill, lathe, plasma, and laser control systems Safety and monitoring features Microcontroller-based Safety Charge Pump monitoring Integrated E-stop terminal with 24V operation Driver fault detection with alarm monitoring 5-second fault notification system Visual indicators for system status and peripheral function Spindle and relay control PWM-based variable spindle speed control Integrated spindle control circuitry with isolated voltage Two built-in electromechanical relays NO/NC relay contacts for accessories and machine functions Useful for compatible VFD, coolant, and relay-controlled outputs Electrical specifications Specification C25XP Details Control power input Single +24VDC input, accepts 10–30VDC range Regulated output +5VDC output up to 2.5A for external devices Optoisolated inputs 5–24VDC operation with 2.8μS signal delay High-speed inputs Supports up to 400KHz frequency Open collector outputs 60VDC maximum, 2A maximum current TTL digital outputs 24mA maximum current Common connections Stepper motor drivers Compatible digital servo drives Limit switches and home switches E-stop circuit Touch probe VFD/spindle control Coolant pump or relay-controlled accessories Typical CNC applications CNC routers CNC mills CNC lathes Plasma tables Laser tables Mach3/Mach4 retrofit projects New CNC control cabinet builds Recommended: pair the C25XP with the Ethernet Smooth Stepper The C25XP requires the Ethernet Smooth Stepper motion controller for operation. If you do not already have an ESS, the ESS + C25XP bundle is usually the better purchase because it gives you the motion controller and breakout board together in one matched CNC control setup. View ESS + C25XP Bundle View ESS Separately Support coverage This product is drop-shipped by our partner company CNC4PC. Purchasing through BuildYourCNC gives you a clear support path for product questions, order support, documentation links, and technical resources. BuildYourCNC support — your primary point of contact for order and product questions. CNC4PC partner resources — official documentation, setup notes, and product-specific technical references. Manufacturer-level documentation — user manuals, setup articles, wiring information, and assembly guidance when available. Important compatibility notes Ethernet Smooth Stepper motion controller is required for operation and is sold separately unless purchased in a bundle. This board is intended for Mach3 or Mach4 CNC control systems using the Ethernet Smooth Stepper. Stepper or servo motor drivers are still required to power your motors. A suitable power supply, wiring, switches, relays, and machine-specific accessories may still be required. Review the official CNC4PC setup instructions and user manual before wiring or powering the board. This is not a fail-safe device and should not be used in life-support systems or applications where failure could cause property damage, bodily injury, or loss of life. Build a cleaner ESS-based CNC control system Choose the C25XP if you already have an Ethernet Smooth Stepper and want a professional breakout board with screw terminals, safety monitoring, spindle control, relays, optoisolated inputs, and clear status indicators. Choose the ESS + C25XP bundle if you need both the motion controller and the breakout board. View ESS + C25XP Bundle Ask a Compatibility Question
