Description

The Fuji USB-CNV3 programming cable is designed for connecting computers to Fuji Electric PLCs (Programmable Logic Controllers) and other industrial automation devices. It facilitates communication for programming, configuration, and monitoring via Fuji’s proprietary software tools. Below are its key features, compatibility, and usage details:

Key Features

1. Interface Type:

   • Computer Side: USB Type-A (standard USB connector).

   • Device Side: RS-422 or RS-485 serial interface (common for Fuji PLCs like the F70/F100/F200 series).

   • Often includes a circular (M12) or terminal block connector for direct PLC connection.

2. Compatibility:

   • Primarily supports Fuji PLCs such as:

     • F70/F100/F200 series (legacy models).

     • Newer compact PLCs like MICREX-F series.

   • Works with Fuji Electric programming software:

     • F-Tune (for drive and PLC configuration).

     • Syswin (older PLC programming software).

3. Driver & Communication:

   • Requires USB-to-serial drivers (often based on FTDI or Prolific chipsets).

   • Drivers may be included with the cable or available on Fuji’s support site.

   • Assigns a virtual COM port for serial communication.

4. Typical Use Cases:

   • Transferring PLC programs to/from the device.

   • Real-time monitoring and debugging.

   • Configuring parameters for Fuji inverters or HMIs.

Setup and Configuration

1. Installation:

   • Install drivers before connecting the cable to the computer.

   • Ensure the assigned COM port (via Device Manager on Windows) matches the software settings.

2. Wiring Notes:

   • Verify the PLC’s communication port type (RS-422/RS-485) and pinout.

   • Some Fuji PLCs use unique connectors (e.g., M12), requiring proper adapter terminals.

3. Software Configuration:

   • In Fuji software (e.g., F-Tune), select the correct COM port and baud rate (default is often 9600 or 19.2k bps).

   • For legacy PLCs, Syswin may require additional protocol settings.

Common Issues & Solutions

1. Driver Conflicts:

   • Uninstall conflicting USB-serial drivers and reinstall Fuji-specific ones.

   • Use the latest drivers from Fuji’s website.

2. Connection Failures:

   • Check COM port settings in software.

   • Ensure the PLC is in STOP mode during programming.

   • Verify cable wiring (e.g., RX/TX lines may need swapping for RS-485).

3. Physical Damage:

   • Fuji’s circular connectors are durable but sensitive to improper mating. Inspect pins for bends or corrosion.

Alternatives and Notes

• Alternative Cables:

  • Fuji’s USB-CNV02 for newer PLCs (supports USB-C and faster communication).

  • Generic USB-to-RS422/485 cables may work if pinout and drivers are compatible.

• Important Tips:

  • Always power-cycle the PLC after connecting the cable.

  • Use shielded cables in electrically noisy environments.

  • Legacy PLCs may require RS-232 to RS-422 converters if using older hardware.