Giddings & Lewis M.1301.6598 Digital Input Module

Technical Specifications

Model： M.1301.6598

Brand： Giddings & Lewis

Product Type: Rack mount opto-isolated discrete digital input PCB assembly for PiC900 CNC system

Module Feature:

Function: Digital input module for G&L PiC900 CNC platform. Collects 24VDC discrete digital signals from machine limit switches, safety interlocks, proximity sensors and operator panel pushbuttons, transmits captured status data to PiC900 main processor for heavy horizontal boring mills and large machining centers.

Signal type: 24VDC sink/source discrete input with opto-electrical isolation

Bus interface: PiC900 parallel backplane bus for high-speed data exchange

Onboard components: Opto-coupler isolation chips, signal buffer circuits, transient surge protection

LED indicators: POWER, ACT, CH, FAULT diagnostic lights

Hardware self-diagnosis: Input channel integrity test, overvoltage detection, backplane bus communication verification

Programming software: PiCPro for input address mapping and module diagnostic testing

Electrical Parameters

Backplane supply: +5VDC Field input supply: 24VDC

Power consumption: Max 7.0W

Mechanical & Structure:

Mounting: PiC900 rack slot mount with gold finger edge connector

Weight: 0.90kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy PiC900 digital input module

System compatibility

Compatibility description: M.1301.6598 belongs to Giddings & Lewis PiC900 digital I/O family. Compatible with PiC900 CPU, MMC motion control boards and other PiC900 rack modules. Widely fitted on heavy G&L horizontal boring mills.

Function

Function description: M.1301.6598 is opto-isolated digital input board manufactured by Giddings & Lewis. It acquires field 24VDC sensor and safety switch signals for PiC900 CNC controller. Optocoupler isolation separates controller logic circuit and machine field circuit to suppress industrial electrical noise and prevent surge damage to the CNC rack. It monitors machine safety status, axis limit signals and operator panel commands. It is legacy digital input spare for heavy G&L CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power and 24VDC field power. Insert M.1301.6598 board into PiC900 rack slot and secure gold finger connector. Wire shielded sensor cables to input terminal block. Configure input channel addresses via PiCPro. Power on rack, verify ACT LED and test each input channel response.

Interface

Interface list: PiC900 backplane gold finger connector, multi-channel 24VDC input screw terminal block,on-board POWER / ACT / CH / FAULT LED indicators for Giddings & Lewis M.1301.6598.

Diagnostic

Troubleshooting: Input no detection: Check 24V field supply, sensor wiring or damaged opto-coupler. FAULT LED lit: Overvoltage on input channel, backplane communication failure or onboard circuit fault. Signal fluctuation: Poor grounding, unshielded cable or electromagnetic interference.

Product Brief

Brief description: M.1301.6598 is Giddings & Lewis legacy PiC900 opto-isolated digital input module,for machine safety switch and limit signal acquisition on heavy CNC boring mills,discontinued CNC digital input PCB spare.