JANCD-CG02 Product Description (YASKAWA)

JANCD-CG02 is the second-generation high-performance graphics/communication control board of the JANCD-CG series. It is designed for Yasnac J50, M-500, i80, and M-600 CNC systems. Compared to JANCD-CG01/C, it has achieved comprehensive upgrades in display performance, communication capabilities, and processing speed. It is a core component for display and interaction in high-end CNC systems from the previous generation.

I. Basic Information

Brand: YASKAWA (Yaskawa Electric)

Full model: JANCD-CG02

Component number: DF8203001 (REV.A/B)

Board type: High-performance graphics control + communication interface composite board

Applicable systems: Yasnac J50, M-500, i80, M-600 CNC controllers

Compatible backplane: JANCD-BB50, JANCD-BB03, JANCD-BB02

Production status: Out of production (second-hand / refurbished / repair channels)

Size: Approximately 260mm × 130mm × 20mm (standard JANCD long card)

Weight: Approximately 0.7kg

PCB process: Multi-layer industrial-grade FR-4 board, gold-plated bus contacts

II. Core Functions (Comprehensive Upgrade Compared to CG01/C)

1. Display Control (Medium-resolution Graphics)

Driver: Monochrome / Gray-scale CRT display (VGA analog RGB)

Resolution improvement: 640×480 (CG01 was 320×240)

Display: System coordinates, G-code, tool path trajectory, parameters, alarms

Graphics rendering acceleration: Support for dynamic display of complex tool paths, trajectory preview

Compatible CRT to LCD conversion (better adaptability than CG01)

2. Human-Machine Interaction (Enhanced)

Connection: Machine operation panel / keyboard / handwheel (50-pin European-style terminals)

Processing: Buttons, knobs, mode switches, emergency stop, handwheel pulses

I/O circuit reinforcement: Anti-static, anti-interference, anti-mis-triggering

Support for multi-panel switching, extended key functions

3. Communication Management (Dual RS-232C + High-speed Bus)

Dual RS-232C serial ports (DB-25×2)

Baud rate: 9600~38400bps (CG01 maximum 19200)

Support: DNC online processing, upper computer communication, program transmission

Bus communication optimization: High-speed interaction with JANCD-CP50/CP60 CPU

New addition: Buffer expansion for communication, reducing packet loss, error reporting

4. Status Monitoring (Advanced Diagnosis)

Three-color LED: PWR (green), RUN (green), ALM (red)

Self-check: Power supply, bus, display, communication, video memory, temperature

Fault code display: Precise problem location (CG01 only lights up)

Support: System log recording, historical fault query

III. Hardware Specifications

1. Electrical Parameters

Power supply: 24V DC ±10% (backplane power supply)

Power consumption: ≤8.5W (higher than CG01's 7~7.5W)

Bus interface: Special parallel bus for J50 (gold-plated contacts)

Protection: Overcurrent, overvoltage, reverse connection, ESD static protection

2. Processor and Storage

Main control chip: 32-bit graphics/communication processor (performance doubled)

Video memory: 256KB SRAM (CG01 was 128KB)

Cache: 128KB battery-backed RAM (CG01 was 64KB) Battery: 3.6V lithium battery (CR2032 compatible, battery life ≥ 5 years)

3. External interfaces

CRT display: DB-15 connector (VGA analog RGB, shielded design)

Operation panel: 50-pin European-style terminals (anti-loosening clips)

RS-232C: DB-25 connector ×2 (industrial-grade chips, dual serial ports independent)

Battery interface: Built-in anti-detachment socket

Expansion interface: 1 group of debugging / expansion ports

4. Environmental indicators

Operating temperature: 0°C ~ +50°C

Storage temperature: -25°C ~ +65°C

Humidity: 10% ~ 85% RH (no condensation)

Anti-vibration: 10~55Hz, ≤5.8m/s²

Protection level: IP20 (installed in control cabinet)

Four. Comparison of JANCD-CG01 / CG01C / CG02 Table

Parameters: JANCD-CG01, JANCD-CG01C, JANCD-CG02

Positioning: Basic graphic board, Stable enhanced version, Second-generation high-performance version

Resolution: 320×240 monochrome, 320×240 monochrome, 640×480 grayscale

Serial port: 1×RS-232C, 1×RS-232C, 2×RS-232C

Video memory / RAM: 128KB / 64KB, 128KB / 64KB, 256KB / 128KB

Processor: 16-bit, 16-bit (optimized), 32-bit

Baud rate: ≤19200bps, ≤19200bps, ≤38400bps

Fault diagnosis: Basic indicator lights, Basic + Temperature, Code + Log + Precise positioning

Compatible scenarios: Basic maintenance, Stable requirements, High-end models / DNC processing

Five, Typical Application Scenarios

Yasnac M-600 /i80 High-end CNC Display and Communication Core

J50/M-500 System Upgrade (Replace CG01/C)

CNC machine tools requiring DNC online processing

Machining centers with complex tool path display

High compatibility solution for CRT to LCD conversion of old equipment

Automation production lines requiring high communication stability and speed

Six, Common Faults and Troubleshooting

Black screen / Screen flicker

Reason: Video memory failure, CRT interface loose, graphics chip damaged

Troubleshooting: Check PWR/RUN light, Reinsert CRT cable, Test video memory

ALM red light + Fault code

Reason: Bus error, Dual serial port conflict, Battery voltage low

Troubleshooting: Refer to code table, Reset communication parameters, Replace battery

DNC transmission failure

Reason: Baud rate mismatch, Cable too long, Serial port chip damaged

Troubleshooting: Set to 19200/38400bps, Cable ≤ 3m, Replace dual serial ports

Buttons / Handwheel malfunction

Reason: Panel interface loose, I/O circuit interference, Grounding不良

Troubleshooting： Check wiring， Confirm grounding， Clean interface

Seven， Associated Accessories

Main CPU board： JANCD-CP50， JANCD-CP60

Back panel： JANCD-BB50 (8 slots)， JANCD-BB03 (14 slots)

Servo control board： JANCD-SV50， JANCD-SV60

I/O board： JANCD-IO50， JANCD-IO60

Backup battery： 3.6V lithium battery (CR2032 compatible)

Eight， Notes

JANCD-CG02 is the comprehensive upgraded version of the CG01 series. Its core advantages include medium-resolution display， dual high-speed serial ports， 32-bit processing， and advanced diagnosis. It is suitable for high-end models such as M-600/i80 or equipment requiring DNC processing. During maintenance：