Overview

JANCD-FC224 is a dedicated NC program parsing and preprocessing board for the I80 system. It is responsible for high-speed decoding of large-capacity NC programs, trajectory pre-computation, and program segment buffer management. It alleviates the load on the main CPU (FC200), improving the processing response and stability of complex programs (such as high-speed and high-precision, multi-axis linkage). 

Alternative / Associated models: JANCD-FC221 (with integrated sub-board)

Assembly base plate: JANCD-FC001 (general I80 backplane) Specifications

Part No: DF8203987-B0

Board Size: Standard I80 board card size (267×152mm)

Power: 5VDC ±5%, approximately 1.5A (power supply from the back panel)

Program Memory: Built-in high-speed SRAM/DRAM, supports **≥10MB** program cache

Max Program Length: Supports ultra-long NC programs (≥100,000 lines) for segmented processing

Processing Speed: High-speed decoding, supports lookahead ≥100 segments Operating Temp: 0°C ~ +55°C

Weight: Approximately 0.4 - 0.5 kilograms Key Functions

NC program high-speed decoding: Analyze G/M codes, macro programs, and subroutines, and generate motion instruction data packets.

Trajectory pre-computation and anticipation: Process multiple segments of programs in advance, optimize speed/acceleration, and reduce corner impacts.

Program buffering and management: Large-capacity cache to solve transmission bottlenecks during DNC online processing.

Main CPU load sharing: Separate program parsing, syntax checking, and format conversion from FC200, improving system response.

Program error diagnosis: Real-time detection of syntax errors, address conflicts, and format anomalies, and output alarm codes.

Multi-axis linkage pre-processing: Data preparation before interpolation for complex surfaces/multi-axis programs, ensuring smooth processing. Compatibility

Backplane: JANCD-FC001 (Special backplane for I80 system)

Required mainboard:

CPU board: JANCD-FC200 (SMON main control board)

PLC board: JANCD-FC210 / FC211

Storage board: JANCD-FC190 / FC191

Adaptor chassis: JZNC-IRK31M series

Not interchangeable: Non-spindle board; cannot replace FC220/FC222; only for I80, incompatible with I60. Difference from FC220/FC222

FC220/FC222: Spindle Control Board → Controls spindle speed, positioning, and encoder feedback.

FC224: Program Parsing Board → Manages NC program decoding, anticipation, buffering, and is independent of the spindle. Remarks

Application scenarios: High-speed machining centers, multi-axis coordinated machines, long-program DNC processing (such as molds, aviation components).

Maintenance tips: Common faults include program errors, processing stalling, and memory abnormalities, mostly due to aging onboard cache or communication chips.