{"product_id":"uc300eth-ethernet-motion-controller-for-mach3-mach4-and-uccnc-6-axis-5-lpt-ports-up-to-400khz","title":"UC300ETH-5LPT Ethernet CNC Motion Controller for Mach3, Mach4 \u0026 UCCNC","description":"\u003cdiv style=\"max-width: 950px; margin: 0 auto; font-family: Arial, sans-serif; line-height: 1.6; color: #222;\"\u003e\n\n  \u003csection style=\"padding: 24px; border: 1px solid #e5e5e5; border-radius: 14px; margin-bottom: 22px; background: #fafafa;\"\u003e\n    \u003ch2 style=\"font-size: 26px; margin: 0 0 12px; color: #1f1f1f;\"\u003eUC300ETH-5LPT Ethernet CNC Motion Controller\u003c\/h2\u003e\n    \u003cp style=\"font-size: 16px; margin: 0;\"\u003e\n      The UC300ETH-5LPT is an Ethernet CNC motion controller designed to replace outdated PC parallel port control with faster, more stable network-based motion control. It sends precise step and direction signals to compatible CNC breakout boards, stepper drivers, or servo drives while keeping critical motion timing off the computer and inside dedicated controller hardware.\n    \u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"padding: 22px; border-left: 5px solid #f15a24; background: #fff7f3; border-radius: 10px; margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eQuick Answer\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 0;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWhat it is:\u003c\/strong\u003e A UC300ETH-5LPT Ethernet CNC motion controller with five IDC26 LPT-compatible ports.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Converts commands from CNC control software into accurate motion control signals for compatible stepper and servo systems.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e CNC routers, CNC mills, plasma tables, laser systems, DIY CNC builds, and machine retrofit projects.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eSoftware compatibility:\u003c\/strong\u003e Works with UCCNC, Mach3, and Mach4 when properly licensed, configured, and paired with the correct plugin.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e The UC300ETH requires a stable external 5VDC power supply. Ethernet does not power the controller.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-bottom: 10px;\"\u003eKey Features\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-top: 0;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eEthernet CNC motion control:\u003c\/strong\u003e Uses an RJ45 Ethernet connection for stable communication between the control PC and CNC motion controller.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eReplaces parallel port control:\u003c\/strong\u003e Gives older LPT-style CNC systems a modern Ethernet control upgrade without relying on a PC parallel port.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eControls up to 6 axes:\u003c\/strong\u003e Supports up to 6-axis CNC motion control for X, Y, Z, A, B, and C axis configurations.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eUp to 400kHz step frequency:\u003c\/strong\u003e Supports high-speed step output for systems using higher microstepping, faster rapids, or more demanding motion requirements.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWorks with UCCNC, Mach3, and Mach4:\u003c\/strong\u003e Compatible with common CNC control software when the correct license, plugin, and setup are used.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e5 IDC26 LPT-compatible ports:\u003c\/strong\u003e Provides five digital ports for expanded CNC input and output wiring.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e49 digital inputs and 36 digital outputs:\u003c\/strong\u003e Offers large I\/O capacity for limit switches, home switches, probes, relays, buttons, sensors, and machine control signals.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e2 analog inputs and 2 analog outputs:\u003c\/strong\u003e Useful for functions such as spindle speed control, feed override, or other analog CNC control features.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eStep and direction control:\u003c\/strong\u003e Designed for compatible stepper driver and servo driver systems using step\/direction signals.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eFlexible network setup:\u003c\/strong\u003e Can connect directly to a dedicated PC network card or through a router\/switch depending on your control cabinet layout.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"padding: 22px; border: 1px solid #ddd; border-radius: 14px; margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eWhy Upgrade to the UC300ETH-5LPT?\u003c\/h3\u003e\n    \u003cp style=\"margin-bottom: 12px;\"\u003e\n      Standard PC parallel port control depends heavily on the computer’s timing. That can create motion problems when the computer is under load, using modern hardware, or running background processes. The UC300ETH-5LPT moves motion timing to dedicated controller hardware, helping your CNC machine run with smoother and more reliable control signals.\n    \u003c\/p\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 0;\"\u003e\n      \u003cli\u003eHelps eliminate dependence on outdated PC parallel ports\u003c\/li\u003e\n      \u003cli\u003eImproves motion control stability compared with software-only pulsing\u003c\/li\u003e\n      \u003cli\u003eSupports higher step frequencies than many basic CNC controllers\u003c\/li\u003e\n      \u003cli\u003eProvides enough I\/O for larger or more complex CNC machines\u003c\/li\u003e\n      \u003cli\u003eWorks well for CNC retrofits using existing LPT-style breakout boards\u003c\/li\u003e\n      \u003cli\u003eCreates a stronger motion control foundation for future machine upgrades\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-bottom: 10px;\"\u003eBest Applications\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-top: 0;\"\u003e\n      \u003cli\u003eCNC router motion control systems\u003c\/li\u003e\n      \u003cli\u003eCNC milling machine controller upgrades\u003c\/li\u003e\n      \u003cli\u003ePlasma table control systems\u003c\/li\u003e\n      \u003cli\u003eLaser machine control systems where compatible\u003c\/li\u003e\n      \u003cli\u003eDIY CNC machine builds\u003c\/li\u003e\n      \u003cli\u003eParallel port CNC machine retrofits\u003c\/li\u003e\n      \u003cli\u003eMach3, Mach4, and UCCNC control cabinet builds\u003c\/li\u003e\n      \u003cli\u003eStepper motor and servo motor control systems using step and direction signals\u003c\/li\u003e\n      \u003cli\u003eMachines that need high I\/O capacity for switches, probes, relays, and operator controls\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"background: #f5f5f5; padding: 22px; border-radius: 14px; margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eTechnical Highlights\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 0;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eController type:\u003c\/strong\u003e Ethernet CNC motion controller\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e UC300ETH-5LPT\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003ePC connection:\u003c\/strong\u003e RJ45 Ethernet connection\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eSoftware compatibility:\u003c\/strong\u003e UCCNC, Mach3, and Mach4\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAxis support:\u003c\/strong\u003e Up to 6 axes\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eMaximum step frequency:\u003c\/strong\u003e Up to 400kHz\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDigital ports:\u003c\/strong\u003e 5 IDC26 LPT-compatible ports\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDigital inputs:\u003c\/strong\u003e 49\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDigital outputs:\u003c\/strong\u003e 36\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAnalog inputs:\u003c\/strong\u003e 2\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAnalog outputs:\u003c\/strong\u003e 2\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003ePower requirement:\u003c\/strong\u003e External 5VDC power supply required\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eMotor control type:\u003c\/strong\u003e Step and direction interface for compatible stepper or servo systems\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eNetwork setup:\u003c\/strong\u003e Direct PC connection or router\/switch connection\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"padding: 22px; border-left: 5px solid #222; background: #f9f9f9; border-radius: 10px; margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eImportant Compatibility Notes\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 0;\"\u003e\n      \u003cli\u003eThe UC300ETH-5LPT is not powered through Ethernet. A stable external 5VDC power supply is required.\u003c\/li\u003e\n      \u003cli\u003eDo not apply more than 5VDC to the power input. Higher voltage can permanently damage the controller.\u003c\/li\u003e\n      \u003cli\u003eMach3 and Mach4 require the correct UC300ETH plugin and software setup.\u003c\/li\u003e\n      \u003cli\u003eUCCNC requires the correct compatible license and configuration.\u003c\/li\u003e\n      \u003cli\u003eThe board uses LPT-compatible IDC26 ports, but your machine may still need compatible breakout boards, wiring, drivers, and software configuration.\u003c\/li\u003e\n      \u003cli\u003eAlways verify your breakout board, stepper drivers, servo drives, spindle\/VFD setup, E-stop circuit, limit switches, and power supply before installation.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-bottom: 10px;\"\u003eI\/O Capacity for Larger CNC Systems\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-top: 0;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eFive IDC26 digital ports:\u003c\/strong\u003e Gives your CNC machine expanded input and output capacity for advanced control systems.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e49 digital inputs:\u003c\/strong\u003e Useful for home switches, limit switches, probes, E-stop signals, drive alarms, operator panels, and sensors.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003e36 digital outputs:\u003c\/strong\u003e Useful for relays, coolant control, spindle enable, drive enable, indicator lights, and auxiliary machine functions.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAnalog inputs and outputs:\u003c\/strong\u003e Useful for spindle speed control, overrides, and analog machine control depending on your setup.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eLPT-compatible pinout:\u003c\/strong\u003e Helps simplify upgrades for machines already using parallel-port-style breakout boards.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"padding: 22px; border: 1px solid #e5e5e5; border-radius: 14px; margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eSoftware Use\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 0;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eUCCNC:\u003c\/strong\u003e Works with UCCNC software when properly licensed and configured.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eMach3:\u003c\/strong\u003e Works with Mach3 using the correct plugin and setup.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eMach4:\u003c\/strong\u003e Works with Mach4 using the correct plugin and setup.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDriverless Ethernet communication:\u003c\/strong\u003e Uses standard network communication instead of requiring a traditional internal PC parallel port.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eSetup required:\u003c\/strong\u003e Network settings, plugin installation, software configuration, and I\/O mapping must be completed before operation.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"background: #f5f5f5; padding: 22px; border-radius: 14px; margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eNetwork and Installation Notes\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 0;\"\u003e\n      \u003cli\u003eConnect directly to a dedicated PC network card or through a router\/switch.\u003c\/li\u003e\n      \u003cli\u003eUse a crossover or straight-through Ethernet cable depending on your network hardware and setup.\u003c\/li\u003e\n      \u003cli\u003eSome network cards and routers support auto MDI\/MDIX, which can automatically detect cable type.\u003c\/li\u003e\n      \u003cli\u003eMount the controller inside a protected CNC control enclosure away from chips, dust, coolant, and moisture.\u003c\/li\u003e\n      \u003cli\u003eUse proper grounding, shielding, and cable separation practices in high-noise CNC environments.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"padding: 22px; border: 1px solid #ddd; border-radius: 14px; margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eRecommended Pairing\u003c\/h3\u003e\n    \u003cp style=\"margin-bottom: 12px;\"\u003e\n      For cleaner wiring and easier installation, pair the UC300ETH-5LPT with a compatible breakout board or multifunction interface board. This helps convert the controller’s IDC26 ports into easier-to-wire terminals, relay connections, spindle control wiring, and organized control cabinet connections.\n    \u003c\/p\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 0;\"\u003e\n      \u003cli\u003eUse with compatible LPT-style breakout boards for basic control systems\u003c\/li\u003e\n      \u003cli\u003eUse with compatible CNC4PC interface boards for cleaner cabinet wiring\u003c\/li\u003e\n      \u003cli\u003eUse with the C76 multifunction board when building a UC300ETH-based control system with expanded I\/O, relays, spindle control, and safety monitoring\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"padding: 22px; border: 1px solid #ddd; border-radius: 14px; margin-bottom: 26px; background: #fff7f3;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eNeed the Matching C76 Breakout Board?\u003c\/h3\u003e\n    \u003cp style=\"margin-bottom: 12px;\"\u003e\n      The UC300ETH is the Ethernet motion controller, but most CNC builders also need a clean way to wire the controller into the machine. The UC300ETH + C76 bundle includes both the motion controller and the matching C76 multifunction breakout board for a cleaner, more complete CNC control cabinet setup.\n    \u003c\/p\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 16px;\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBetter for new builds:\u003c\/strong\u003e Includes the UC300ETH controller and C76 breakout board together.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eCleaner wiring:\u003c\/strong\u003e Adds organized terminals, relays, spindle control, optoisolated I\/O, and safety monitoring.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eLess guesswork:\u003c\/strong\u003e Helps avoid buying the controller first and realizing later that you still need the matching breakout\/interface board.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003ca href=\"https:\/\/buildyuurcnc.com\/products\/uc300eth-c76-ethernet-cnc-controller-bundle\" target=\"_blank\" rel=\"noopener\" style=\"display: inline-block; padding: 12px 18px; background: #f15a24; color: #fff; text-decoration: none; border-radius: 8px; font-weight: bold;\"\u003e\n      View the UC300ETH + C76 CNC Controller Bundle\n    \u003c\/a\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-bottom: 10px;\"\u003eWhat You Receive\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-top: 0;\"\u003e\n      \u003cli\u003eUC300ETH-5LPT Ethernet CNC motion controller\u003c\/li\u003e\n      \u003cli\u003eFive IDC26 LPT-compatible ports for machine I\/O expansion\u003c\/li\u003e\n      \u003cli\u003eEthernet-based motion control capability for compatible CNC software\u003c\/li\u003e\n      \u003cli\u003eAccess to high-speed step and direction control for compatible stepper and servo drives\u003c\/li\u003e\n      \u003cli\u003eDocumentation and software download links below for setup reference\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"padding: 22px; border: 1px solid #ddd; border-radius: 14px; background: #ffffff; margin-bottom: 26px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eDocuments\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 0; margin: 0; list-style: none; border: 1px solid #e0e0e0; border-radius: 8px; overflow: hidden;\"\u003e\n      \u003cli style=\"border-bottom: 1px solid #e0e0e0; background: #ffffff;\"\u003e\n        \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/UC300ETH_manual.pdf?v=1779315873\" target=\"_blank\" rel=\"noopener\" style=\"display: block; padding: 13px 16px; color: #222; text-decoration: none; font-size: 16px; background: #ffffff;\"\u003e\n          🔗 UC300ETH Manual\n        \u003c\/a\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"border-bottom: 1px solid #e0e0e0; background: #ffffff;\"\u003e\n        \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/UC100_V2_151.zip?v=1779315879\" target=\"_blank\" rel=\"noopener\" style=\"display: block; padding: 13px 16px; color: #222; text-decoration: none; font-size: 16px; background: #ffffff;\"\u003e\n          🔗 Plugin for Manual Installation for Mach3\n        \u003c\/a\u003e\n      \u003c\/li\u003e\n      \u003cli style=\"background: #ffffff;\"\u003e\n        \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/ucxxx_utility.zip?v=1779315885\" target=\"_blank\" rel=\"noopener\" style=\"display: block; padding: 13px 16px; color: #222; text-decoration: none; font-size: 16px; background: #ffffff;\"\u003e\n          🔗 UCxx Utility Software\n        \u003c\/a\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection style=\"padding: 22px; border: 1px solid #e5e5e5; border-radius: 14px;\"\u003e\n    \u003ch3 style=\"font-size: 21px; margin-top: 0;\"\u003eBefore You Order\u003c\/h3\u003e\n    \u003cul style=\"padding-left: 22px; margin-bottom: 0;\"\u003e\n      \u003cli\u003eChoose this controller if you need Ethernet CNC motion control with high I\/O capacity.\u003c\/li\u003e\n      \u003cli\u003eChoose the UC300ETH + C76 bundle if you need both the Ethernet motion controller and the matching multifunction breakout board.\u003c\/li\u003e\n      \u003cli\u003eDo not buy it expecting it to wire directly to motors by itself. It sends control signals to compatible breakout boards, stepper drivers, or servo drives.\u003c\/li\u003e\n      \u003cli\u003eMake sure your CNC software, breakout board, power supply, drives, switches, spindle\/VFD, and safety circuits are compatible before installation.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e","brand":"BuildYourCNC","offers":[{"title":"Default Title","offer_id":47701630877870,"sku":null,"price":184.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/UC300ETH-5LPT_Ethernet_CNC_Motion_Controller.jpg?v=1779316052","url":"https:\/\/buildyuurcnc.com\/products\/uc300eth-ethernet-motion-controller-for-mach3-mach4-and-uccnc-6-axis-5-lpt-ports-up-to-400khz","provider":"BuildYourCNC","version":"1.0","type":"link"}