Giddings & Lewis 501-04301-02 CNC Executive CPU Module

Technical Specifications

Model： 501-04301-02

Brand： Giddings & Lewis

Product Type: Rack mount CNC executive processor board for legacy NumeriPath CNC system

Module Feature:

Function: Main CPU processor board for G&L NumeriPath CNC platform. Executes NC part program parsing, motion trajectory calculation, machine logic scheduling and system management. Coordinates servo control boards, I/O boards and HMI communication boards for heavy horizontal boring mills and large machining centers.

Bus interface: Parallel backplane bus for high-speed data exchange with all rack plug-in boards

Onboard components: Main processing CPU, system RAM, non-volatile memory for CNC system firmware and parameters

LED indicators: POWER, RUN, FAULT, SYS-READY diagnostic lights

Hardware self-diagnosis: Boot memory check, backplane bus test, board hardware integrity detection at power-up

Programming software: Giddings & Lewis proprietary CNC software for system configuration, parameter backup and board diagnostic test

Electrical Parameters

Backplane supply: +5VDC

Power consumption: Max 12W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 1.3kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy NumeriPath CNC main processor board

System compatibility

Compatibility description: 501-04301-02 belongs to Giddings & Lewis NumeriPath core control family. Compatible with matching rack backplane, memory expansion, servo interface, analog and digital I/O boards. Widely fitted on vintage heavy G&L horizontal boring mills.

Function

Function description: 501-04301-02 is CNC executive processor board manufactured by Giddings & Lewis. It acts as the core controller of NumeriPath CNC system. It interprets G-code programs, computes interpolation trajectories and sends motion instructions to servo boards. It also manages machine auxiliary logic, safety interlock and HMI data interaction. System parameters and machine configuration data are stored in onboard non-volatile memory. It is legacy main CPU spare for old heavy G&L CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power. Insert 501-04301-02 board into rack slot and secure gold finger connector. Restore rack power, wait for system boot and verify SYS-READY indicator. Restore CNC parameters and NC programs, run full system self-test and validate program execution and axis motion.

Interface

Interface list: Backplane gold finger connector, peripheral ribbon cable port,on-board POWER / RUN / FAULT / SYS-READY LED indicators for Giddings & Lewis 501-04301-02.

Diagnostic

Troubleshooting: System boot failure:Check +5V backplane power, gold finger contact or firmware corruption. FAULT LED lit: Memory chip failure, backplane bus fault or CPU hardware damage. Program execution error: Parameter mismatch or corrupted system configuration data.

Product Brief

Brief description: 501-04301-02 is Giddings & Lewis legacy NumeriPath CNC executive CPU board,for G-code program interpretation,trajectory interpolation and overall machine system control on heavy CNC boring mills,discontinued CNC main controller PCB spare.