No serial communication from ST Link-v2 to laptop through USB

[sbeuk]

I want to program my STM32F091CC with the ST Link/V2 through Arduino. I downloaded the stw-link009 software and I can push Arduino code to the STM32. The problem is that I can not get serial communication so I can see serial prints or debug my code. 

I have been trying to fix this issue for several days now but don't see a solution. On other forms I see that it is impossible to get serial communication from an "external ST Link/V2 .. 

Thanks in advance.

[Tesla DeLorean]

Correct, you'd need an ST-LINK/V3SET supporting a serial connection or a separate USB to Serial dongle attached to a Serial / UART instance on the board.

Or you'd need a USB CDC/VCP Device firmware running on the STM32, perhaps in the form of boot loader

[QSHAO.1]

Normally the VCP is supported by STLINKV2 embedded on ST STM32 boards. is this issue discovered on ST board? or which ST board you are working on? thanks!

[sbeuk]

I am working with the Barth STG850 PLC. I managed to get serial communication by using the Barth VK-16 cable. 

Thank you both for the responses.