User manual

Note
1. Do not disconnect the USB-xxx converter during running
your application program to avoid any unexpected problem.
2. USB-xxx Driver software provides maximum 8 pcs of
USB-xxx converters to be used for multiple devices
communication .The addresses of the multiple devices
are according to the COM PORT addresses of the PC or
the addresses of the HUB USB PORT where the devices
are connected. You should insert the USBxxx into the
COM PORT or HUB PORT one by one in order with the
addresses indicated.
4. You must connect USB-xxx Converter into the USB port
of your computer before you start USB-xxx Driver
software installation.
5. After USB-xxx Converter is connected into USB port of
the computer which is with USB-xxx Driver software
installed,LINK LED will turn on to be ready for use,
otherwise unplug USBxxx converter and try again after
5 seconds or longer.
6. After unplug USB-xxx converter from the computer,you
must wait for minimum 5 seconds and then plug
USB-xxx converter into the computer again,otherwise
Windows may not detect USB-xxx converter.
3. USB-xxx supports only Win2000/XP OS.
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7. In the Application Software, the handshaking property
must be set to "None" when you use USB485A.
8. If you are using RS485 interface for long distance
transmission,we suggest you use a 24AWG or bigger
range one shielded cable for connection,in order to have
better performance.