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USB interface Fuji N Series PLC (NB, NJ, NS, NW0, etc.) programming cable

USB/RS422 interface, 3 meters, with communication indicator, the largest communication distance of up to 1.5 kilometers.


USB-CNV3 is the programming cable which USB port provides serial connection and RS422 signal conversion.Under the control of driver, the programming cable simulates USB port of the computer as traditional serial port(known as COM interface) in order to use various existing programming softwares,communication softwares, monitoring softwares etc applications. The working power supply of this cable is directly from the USB port,not the PLC programming interface. The two-color LED on the converter box indicates data’s transceiving status.

USB-CNV3 is applicable to Fuji N Series (NB, NJ, NS) PLC, support the largest communication distance 1.5 km.

USB-CNV3 principle and figure structure:


Support USB-CNV3 programming software version: Flex V1.0 and above
Fully compatible with USB V1.1 norms and USB CDC V1.1
USB-bus powered, with current consumption of 50 mA
Baud rate: 300 bps ~ 1Mbps automatically adapt to the standard baud rate
Support UART data format: data bits: 7-8; stop bit: 1, 2; check-bit: odd / even / no parity
support long-distance communication, the largest communication distance is 1.5 kilometer (19200 bps)
Each PC only supports one USB cable programming
Working temperature: -20 ~ +75C
Cable length: 3 m; Color: black
Please make sure your PC is IBM PC compatible and has the following
system requirements before using the USB programming cable.

ntel is compatible with 586DX4-100MHz CPU or higher
A standard USB port (4-pin A plug)
Operating system is Windows2000 or Windows XP

The setting of driver procedure
Please set the driver procedure according to the following steps:
1. Turning on PC power that will connect the USB programming cable and make sure the USB port working well.
2. Put the USB programming cable into USB port and Windows will detect the device and help to add new hardware and jump to new device setting.Insert the driver CD and click “next” to continue,
or select the driver on the hard disk.
If Windows does not show “Found New Hardware Wizard”, please click “Universal Serial bus controllers ” in the hardware list of device manager,
and choose the USB device with question mark. Click the right key of mouse and operate to update driver procedure.

If insert the driver CD,you should select the recommended item and click “Next”

If the driver is saved on the hard disk, you should select the second item and click “Next”. You can find the driver on the “USB Drivers for FT232BM” folder.

3. Windows will detect the setting information, and load the driver to install.
4. Continue to set up, copy the driver procedure files to your hard disk by Windows.

5. When Windows appears “Completing the Found New Hardware Wizard”, click “finish” to end setting up.

6. After setting up, please make sure the "port (COM and LPT)" of "Start \Settings \ Control Panel \ system \ hardware \ Device Manager" appears "USB Serial Port(COMx)".
This COMx is the COM message of the USB programming cable. From then on, as long as you insert the programmingcable, the COM port will appear.
You just have to choose this COM port in application software such as programming software or communication software.

The deletion of driver procedure
Select into “USB Drivers for FT232BM” folder.
Run “Ftdiunin.exe” and click Continue to uninstall the driver. You should unplug
the cable before uninstall the driver.

How to change COM setting
1. Delete the driver procedure of all USB to UART products to discharge COM port source, and reset up USB programming cable driver procedure.
The device manager will display the cable address COM3.

2. In Windows 2000/XP the COM slogan can be changed directly. Please double click COM port device that is need changing in the device manager,
and the device attribute information window will appear. Choose “port settings” as the picture shows. Click "Advanced" button, and the advanced setting
information window will appear. Set the COM port to the serial number you want and click "OK" button to complete.

Setting of Programming software
After completing Driver installation, the corresponding COM port for the USB-CNV3 programming cable will be displayed in the “Device Manager” of Window.
The next step is just to choose this COM port in the programming software Select [Options] - [Communications...] from the menu bar of Flex.
The {Communication Parameters} dialog box is displayed.
Select a personal computer RS-232C port number (Com 1 to Com 9) from the [Communications] list as it in the Device manager.

About Long Distance Communication

The largest communication range is up to 1.5 kilometers (19200 bps).The user should follow the self-made plan to extend cable. Communication line should be five 8-twisted pair (cable). When the distance is over 1,500 m, RS422 repeater could be installed to extend the distance.

Please Note: USB interface cannot be extended.

Due to internal resistance have been installed in USB-CNV3 and the PLC, no terminal resistance is needed when you do the external wire splicing.
Notes and Troubleshoot
1. If the USB programming cable could not be detected when opening the PC,or some other outstanding issues occur, please replug it again.
2.USB to UART is plug and play USB device. When data are being transmitted,please don’t disconnect it.
3.Sometimes when Windows System failures or outstanding issues occur when plug or unplug the USB cable, please restart the computer and PLC.