I. Product Overview

Model: JANCD-GCP02 (Material Number: DE6428363, Version: Rev A)

Category: CNC Core CPU Motherboard

Applicable: YASNAC DTN-1990 / 2000G CNC system (for early high-end machine tool controllers)

Function Positioning: System calculation, program parsing, axis control, I/O management, communication coordination

II. Core Functions

Main Control Calculation: Central part of the CNC system, executing G codes / M codes, interpolation calculation, trajectory planning

Axis Control Management: Multi-axis linkage control, servo parameter calculation, position closed-loop control

Program Storage and Execution: Loading and running part programs, macro programs, system parameters

I/O and Communication: Coordinating panel, handwheel, external I/O, RS232 and other interface signals

System Diagnosis: Power-on self-check, operation monitoring, fault code generation

III. Technical Parameters

Structure: Full-size long card (approx. 330×140mm), gold finger slots

Processor: Special 16/32-bit CNC processor, main frequency approximately 8–16MHz

Memory: On-board RAM/ROM (including system firmware and user program area)

Interfaces: Special system bus, I/O bus, panel / handwheel interface, communication ports

Power Supply: Backplane DC5V/±12V, power consumption approximately 25W

Temperature: Working 0–55℃, storage -20–70℃

Weight: Approximately 1.3kg

IV. Installation and Maintenance

Installation: Insert vertically into the CPU main slot (leftmost long slot on the frame), lock and fix the screws; leave 50mm space for heat dissipation

Maintenance: Regularly blow dust off the board; check for oxidation / burn damage of gold fingers; back up system parameters and processing programs

V. Common Faults

No response / black screen upon startup: CPU core damage, crystal oscillator failure, power supply circuit fault

System reports "CPU ERROR": Board damage or poor contact

Abnormal program execution / system freeze: Aging memory chips, failure of calculation unit

Axis control abnormality / large following error: Axis control module failure, unstable bus communication