Fives Group 810-21276-02 System Interface Module

Technical Specifications

Model： 810-21276-02

Brand： Fives Group (Giddings & Lewis)

Product Type: Rack mount system interface PCB assembly for legacy CNC control system

Module Feature:

Function: System interface module for Fives Group CNC platform. Manages internal signal routing, bus arbitration and data distribution between CPU, axis control, I/O and servo boards. Acts as signal bridge to stabilize transmission of motion commands and feedback signals for heavy horizontal boring mills and large machining centers.

Bus interface: Parallel backplane bus for high-speed bidirectional module communication

Onboard components: Bus buffer IC, analog signal conditioning circuit, signal level conversion, address decoding logic, surge suppression and protection components

LED indicators: POWER, BUS, COM, FAULT diagnostic lights

Hardware self-diagnosis: Bus access verification, signal integrity test, power-up checksum detection, inter-module communication test

Programming software: Fives Group proprietary CNC software for bus diagnostic test and hardware resource identification

Electrical Parameters

Backplane supply: +5VDC, ±15VDC

Power consumption: Max 8.2W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 0.97kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy CNC system interface module

System compatibility

Compatibility description: 810-21276-02 belongs to Fives Group CNC backplane interface family. Compatible with Giddings & Lewis legacy CNC rack CPU, motion control and I/O modules. Widely deployed on heavy Fives horizontal boring mills.

Function

Function description: 810-21276-02 is system interface board manufactured by Fives Group (Giddings & Lewis). It coordinates signal distribution across the CNC rack backplane, buffers digital and analog signals between control modules and prevents bus signal contention. It transfers axis motion commands, spindle control signals and I/O status data reliably. Integrated surge protection protects adjacent rack boards from voltage spikes. It is legacy system signal bridging spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5VDC and ±15VDC backplane power. Insert 810-21276-02 board into rack slot and secure gold finger connector. Inspect all adjacent module contacts. Restore rack power, verify BUS and COM LED indicators, run bus diagnostic test and validate cross-module data exchange.

Interface

Interface list: Backplane gold finger connector, multi-channel signal terminal header,on-board POWER / BUS / COM / FAULT LED indicators for Fives Group 810-21276-02.

Diagnostic

Troubleshooting: Multiple modules communication failure: Check backplane gold finger contact or buffer chip damage. FAULT LED lit: Bus parity error, signal contention or power rail abnormality. Intermittent system freeze: Signal attenuation, industrial electromagnetic interference or aging conditioning components.

Product Brief

Brief description: 810-21276-02 is Fives Group legacy system interface board,for internal signal routing and inter-module communication on heavy CNC boring mills,discontinued CNC signal distribution PCB spare.