Giddings & Lewis M.1302.8416 MMC Motion Control Module

Technical Specifications

Model： M.1302.8416

Brand： Giddings & Lewis

Product Type: Rack mount multi-axis digital motion control PCB for PiC900 CNC system

Module Feature:

Function: MMC multi-axis motion control board for G&L PiC900 CNC platform. Receives NC block data from CNC CPU, performs high-speed linear and circular interpolation, outputs synchronized motion commands through SERCOS optical fiber ring to multiple servo drives for heavy horizontal boring mills and large machining centers.

Bus interface: Parallel backplane bus for communication with PiC900 executive CPU Fiber interface: SERCOS optical ring for servo amplifier communication

Onboard components: Motion DSP processor, battery-backed RAM for axis parameter storage

LED indicators: OK, ACT, AXIS ALARM, FAULT diagnostic lights

Hardware self-diagnosis: SERCOS loop integrity check, watchdog monitoring, axis communication error detection, memory parity test

Programming software: PiCPro for axis parameter configuration, servo gain tuning and fault log review

Electrical Parameters

Backplane supply: +5VDC

Power consumption: Max 14.5W

Backup memory supply: Lithium battery for retaining axis parameters after power off

Mechanical & Structure:

Mounting: PiC900 rack slot mount with gold finger edge connector

Weight: 1.48kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy PiC900 MMC multi-axis motion control board

System compatibility

Compatibility description: M.1302.8416 belongs to Giddings & Lewis PiC900 MMC motion family. Compatible with PiC900 main CPU, SERCOS SmartDrive / DSM servo amplifiers and G&L HSM series brushless servo motors. Widely fitted on heavy G&L horizontal boring mills.

Function

Function description: M.1302.8416 is MMC multi-axis motion control board manufactured by Giddings & Lewis. It serves as core motion calculation unit of PiC900 CNC system. It receives G-code segment data from main CPU, executes trajectory interpolation and sends synchronized digital motion commands over SERCOS fiber ring to servo drives to realize coordinated multi-axis contour machining. Onboard lithium battery preserves servo axis parameters when power is cut off. It is legacy multi-axis motion spare for heavy G&L CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power. Insert M.1302.8416 board into PiC900 rack slot and secure gold finger connector. Check backup lithium battery condition. Wire SERCOS optical cables in ring topology to servo drives. Set axis parameters and tune servo gains by PiCPro. Power on rack, verify ACT LED and SERCOS link status, test axis jog, homing and contour cutting performance.

Interface

Interface list: PiC900 backplane gold finger connector, SERCOS transmit / receive fiber ports,on-board OK / ACT / AXIS ALARM / FAULT LED indicators for Giddings & Lewis M.1302.8416.

Diagnostic

Troubleshooting: No SERCOS communication: Inspect fiber cable damage, poor fiber connection or wrong ring topology. FAULT LED lit: Memory parity error, backplane communication failure or exhausted backup battery. Machining contour deviation: Improper servo gain setting or unstable SERCOS fiber sync.

Product Brief

Brief description: M.1302.8416 is Giddings & Lewis legacy PiC900 MMC multi-axis motion control board,with SERCOS fiber ring digital interface for heavy CNC boring mill synchronized multi-axis contour machining,discontinued CNC motion controller PCB spare.