FTDI read problem

[Inferno2525]

Hi 

i have USB decide which connect yo pc with ftdi driver. i build a VI and try to read and write data from usb port( the following VI attached).but the problem is when i run the VI there is 0 byte to show it's always 0byte but write processes seems good\

what is my VI problem?

[PalanivelThiruvenkadam]

Does your system is installed with FTDI Driver software (To Make USB to Serial Communication)?

Your attached VI contains Sub VIs which is not being attched (Missing sub Vi error), not able to view your code completely.

[Inferno2525]

Hi and thank you for your response.

the ftdi driver is installed on my system .actually the main programme is based on C++ and because i want to connect ftdi driver to labview.

i think  you can find all the drivers I've used here.