Giddings & Lewis 503-19515-20 Serial Communication Module

Technical Specifications

Model： 503-19515-20

Brand： Giddings & Lewis

Product Type: Rack mount multi-channel serial communication PCB assembly for legacy NumeriPath CNC system

Module Feature:

Function: Serial communication interface board for G&L NumeriPath CNC platform. Supports RS232 and RS422 serial protocols to realize NC program transmission, peripheral device connection and remote serial diagnostic for heavy horizontal boring mills and large machining centers.

Communication ports: Multi RS232 / RS422 serial channels

Bus interface: Parallel backplane bus for data exchange with CNC executive CPU

Onboard components: Serial UART controllers, line driver and receiver chips, signal isolation circuits

LED indicators: POWER, TX, RX, FAULT diagnostic lights

Hardware self-diagnosis: Port hardware check, data transmission error detection, backplane communication test

Programming software: Giddings & Lewis proprietary CNC software for baud rate, protocol and port address configuration

Electrical Parameters

Backplane supply: +5VDC

Power consumption: Max 6.5W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 0.68kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy CNC serial communication board

System compatibility

Compatibility description: 503-19515-20 belongs to Giddings & Lewis NumeriPath communication family. Compatible with matching rack backplane, executive CPU and I/O interface boards. Widely fitted on vintage heavy G&L horizontal boring mills.

Function

Function description: 503-19515-20 is serial communication board manufactured by Giddings & Lewis. It provides RS232 and RS422 serial links for old NumeriPath CNC controller. It supports DNC serial program upload/download and connection to serial peripherals such as paper tape readers and remote diagnostic terminals. Signal isolation helps suppress interference in industrial workshop environment. It is legacy serial DNC communication spare for heavy G&L CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5VDC backplane power. Insert 503-19515-20 board into rack slot and secure gold finger connector. Connect serial shielded cables to DB connectors. Configure baud rate, parity and handshaking parameters in CNC software. Power on rack, verify TX/RX LED and test DNC file transmission.

Interface

Interface list: Backplane gold finger connector, DB serial ports for RS232/RS422,on-board POWER / TX / RX / FAULT LED indicators for Giddings & Lewis 503-19515-20.

Diagnostic

Troubleshooting: No serial communication:Check serial cable wiring, baud rate mismatch or damaged UART channel. FAULT LED lit:Backplane communication failure or onboard transceiver chip fault. Garbled data:Ground loop interference, incorrect parity or poor shielding.

Product Brief

Brief description: 503-19515-20 is Giddings & Lewis legacy serial communication board,with RS232 / RS422 interface for CNC DNC program transfer on heavy CNC boring mills,discontinued CNC serial communication PCB spare.