1. General Description

2. Basic Specifications

• Applicable system: YASNAC I80 / I80M

• Backplane: JANCD‑FC001 (1 full slot, adjacent to FC500/FC510)

• Board size: Full‑length (≈267 × 140 mm, matches FC500/FC510/FC4xx)

• Power supply: DC 24 V ±10%, approx. 0.6 A (low power)

• Operating temperature: 0 to +45°C

• Storage temperature: −20 to +60°C

• Data throughput: Up to 10 Mbps (PLC‑CNC bus)

3. Core Functions

A. High‑Speed PLC‑CNC Data Exchange (Key Role)

• Dedicated CN52 high‑speed bus link to FC500/FC510

• Reduces PLC‑CNC communication latency by 50% (from ~1 ms to ≤0.5 ms)

• Supports 2,048 words of real‑time data (vs. 512 words on base FC500)

• Enables synchronized motion + sequence control for 5–6 axis machines

B. Advanced Data Processing

• Offloads PLC data logging, alarm management, and peripheral I/O pre‑processing from FC500

• Supports high‑speed I/O sampling (≤0.1 ms) for safety interlocks and high‑speed actuators

• Handles CNC axis status, spindle data, and tool management data streams

C. Communication Interfaces

• CN52: High‑speed PLC expansion bus (to FC500/FC510)

• CN22: Auxiliary high‑speed I/O bus (to FC430/FC440)

• LEDs: Power, bus status, data activity, fault indicators

4. System Compatibility & Combinations

Mandatory Pairing

• PLC core: JANCD‑FC500 (required; FC520 cannot replace FC500)

• CPU board: JANCD‑FC250 (standard) or FC251 (high‑grade)

• Backplane: JANCD‑FC001 (1 full slot for FC520)

Recommended Configurations

1. Standard high‑speed setup: FC250 + FC500 + FC520 + FC400

2. High‑performance expanded setup: FC251 + FC500 + FC510 + FC520 + FC430/FC440

Limitations

• 1 board per I80 system maximum

• Occupies 1 full slot on FC001

• Requires FC500 (no standalone operation)

5. FC520 vs. FC500 vs. FC510

6. Common Faults & Alarms

• A.520 Communication bus error: CN52 loose, FC500 link failure, bus chip fault

• Data mismatch: FC520 not detected, firmware revision incompatibility

• I/O scan overload: Excessive high‑speed I/O without FC520

• All LEDs off: 24 V supply missing, internal fuse blown, backplane fault

7. Applications

• 5‑axis/6‑axis high‑speed machining centers (real‑time motion + sequence sync)

• Multi‑station transfer lines (high‑speed synchronized I/O and data logging)

• Fully automated production cells (machine + robotics + inspection integration)

• High‑end multi‑spindle turn‑mill centers (complex spindle/axis data exchange)

• Legacy I80 upgrades (boost communication speed without full CNC replacement)