Problem with Online Connection with s5 CPUs

Dear All,

Recently I have performed many efforts to connect online with several s5-cpu, among these s5-100U, 155U, 947/947 with no result.

To achieve this I utilized s5 software V 7.23 which is installed in a Windows 7 (Host) virtual environment (VM Ware) of Windows Xp Proffesional (Guest). 

In the hardware side I used a 6ES5734-1BD20 cable which I purchased from e-bay. Additionally a serial to USB adapter.

The usb to serial coverter was tested with a loopback jumper within the environement (Short Circuiting Pins 2-3) of the Virtual Machine and it was working.

Any effort though to connect to the PLCs fails due to error "Systen Error No, 0334".

I read all the topics and solutions provided in this forum (regarding adjustment of serial port advanced settings) and I applied almost all of them but the problem remains.

(1. https://support.industry.siemens.com/cs/ww/en/view/9072665

2. https://support.industry.siemens.com/cs/ww/en/view/18548070 )

Any possible suggestions to overcome this issue?

Looking through the configuration files of the COM ports utilized by the STEP 5 software I saw a filed discussed under another topic which indicates the settings of the com ports as below:

Would you suggest to modify the Advanced port Settings in the Windows side because the default configuration is as follows:

Baud: 9600

Data Bits: 8

Parity: None (?)

Stop bits: 1 (?)

Flow Control: None (?)