Giddings & Lewis 502-03994-10 Processor Module

Technical SpecificationsModel：502-03994-10 Brand：Giddings & Lewis Product Type: Single-slot plug-in PiC900 series CNC processor module for PiC900 rack backplane

Module Feature:Function: Core CPU processor board for PiC900 CNC system, executes part program, multi-axis motion interpolation, I/O scanning and communication management for G&L boring mills and machining centers. Processor speed:50MHz microprocessor Memory:512KB flash memory for firmware and CNC program; 256KB battery-backed RAM for axis parameters and runtime data Onboard interfaces:Serial communication port for HMI and peripheral connection Control function:Multi-axis closed-loop servo motion control, supports G-code execution and axis synchronization Firmware:Field upgradable PiCPro firmware LED indicators:OK, RUN, SYS FLT, COM diagnostic lights Hardware self-diagnosis:Memory check, backplane bus monitoring, serial port self-test, watchdog fault detection Programming software:PiCPro programming and configuration software

Electrical ParametersBackplane supply:+3.3V and +5V from PiC900 rack backplane Power consumption:Max 4.5W Backup battery for RAM data retention, sold separately

Mechanical & Structure:Mounting:Plug into PiC900 rack single slot Weight:0.22kg Protection class:IP20

Environmental:Operating temperature:0℃ ~ +60℃ Ambient humidity:5~85% non-condensing Certification:CE Status:Manufacturer discontinued legacy CNC control module

System compatibility502-03994-10 belongs to Giddings & Lewis PiC900 control platform. Compatible with PiC900 backplane, servo modules, digital/analog I/O boards and operator panels. Widely used on G&L 70A series horizontal boring mills, PMC series CNC boring machines and legacy machining centers.

Function502-03994-10 is PiC900 series CNC CPU board from Giddings & Lewis. It runs PiCPro control software to interpret G codes and perform real-time multi-axis interpolation. It communicates with servo drives and I/O modules through rack backplane, manages data exchange with operator HMI. Battery-backed RAM keeps machine parameters and programs intact after power loss. It is a critical replacement spare for legacy G&L CNC machine tools.

InstallationFollow lockout/tagout safety procedure before operation. Cut off rack power supply. Insert 502-03994-10 module into PiC900 backplane slot and lock retainer. Install backup battery for memory retention. Connect serial cable to operator panel. Download hardware configuration and part program via PiCPro software. Power on rack and verify CNC boot and axis control function.

InterfacePiC900 backplane gold-edge connector,serial port,on-board OK / RUN / SYS FLT / COM LED indicators for Giddings & Lewis 502-03994-10.

DiagnosticCNC fails to boot:Check backplane power, battery voltage or module seating condition. SYS FLT LED lit:Memory corruption, backplane bus fault or firmware damage. No HMI communication:Serial cable failure, baud rate mismatch or port defect.

Product Brief502-03994-10 is Giddings & Lewis legacy PiC900 CNC CPU processor module,with 50MHz processor and battery backup memory for heavy CNC boring mills and machining centers,discontinued machine tool control spare card.