1. General Description

2. Basic Specifications

• Compatible System: YASNAC I80 / I80M (Turn/Mill)

• Backplane: JANCD-FC001 (occupies 1 full slot)

• Dimensions: 267 × 140 mm

• Communication Ports: 2 × High-Speed Serial Ports (RS-232/RS-422 selectable)

• Baud Rate: Up to 115.2 kbps

• Protocols: Xmodem, Ymodem, DNC protocol, Yaskawa proprietary protocol

• Operating Current: ~0.3 A (24 V DC)

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: −20 °C to +70 °C

• Humidity: ≤80% RH (non-condensing)

• Protection: ESD/surge protection on communication lines, LED status indicators

3. Key Features

High-Speed Data Transfer

• Dual independent serial ports for simultaneous connection to two external devices

• Hardware-based data transmission/reception, reducing CPU load

• Supports file upload/download (CNC programs, parameters, tool offsets)

Protocol Flexibility

• Compatible with standard DNC systems for online machining

• Supports Yaskawa’s proprietary protocol for direct connection to Yaskawa HMIs

• Selectable RS-232 (point-to-point) or RS-422 (multi-drop) interface

System Integration

• Connects to FC500 PLC core board via internal high-speed bus

• Real-time data synchronization between CNC and external systems

• LED indicators for power, bus communication, and port activity

4. Compatibility & Configuration

Required Boards

• CPU: JANCD-FC250 / FC251

• PLC Core: JANCD-FC500 (mandatory)

• Backplane: JANCD-FC001 (min. 3 slots)

Typical System Setup

• DNC machining: FC251 + FC500 + FC900B + FC860

• HMI + external controller: FC250 + FC500 + FC900B

Limitations

• Max 1 board per system

• Occupies one full slot on the FC001 backplane

5. Common Faults

• Communication timeout: Loose cable, incorrect baud rate, or protocol mismatch

• Port no response: ESD damage or internal driver chip failure

• LED bus error: Backplane contact issue or bus conflict

• All LEDs off: 24 V power loss or blown internal fuse

6. Applications

• CNC machine tools with DNC (Direct Numerical Control) requirements

• Production lines requiring data exchange with host computers

• YASNAC I80 systems connected to third-party HMIs or controllers

• High-volume machining environments with frequent program transfers