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Run the driver setup executable ( .exe file) provided by Siemens.
Additionally, Windows XP’s driver model (WDM – Windows Driver Model) is vastly different from Windows 10’s (WDF). You cannot use modern drivers on XP. You need drivers specifically compiled for XP (32-bit or 64-bit – though 64-bit XP is extremely rare).
button in the "Interfaces" section to manually add it to the active list. Siemens SiePortal
: If not already present, you can find the driver disk on the Siemens Industry Online Support (SIOS) Siemens SiePortal Installation Procedure
Suggested further actions (one-line)
Select and click Next .
What are you currently running?
If you are dealing with specific error codes during installation, tell me or which exact version of STEP 7 you have installed so I can provide targeted troubleshooting steps. Share public link
What (like STEP 7 V5.5) are you using?
Given the lack of official support, users must employ several workarounds:
This indicates a driver conflict or an incomplete software installation.
A small utility from NirSoft that gives exhaustive USB information, even without drivers installed.
If no XP driver exists, the alternative is to run Windows XP as a virtual machine (using VirtualBox or VMware) on a modern Windows host. Here, the USB adapter is passed through to the virtual XP environment. However, this introduces timing and latency issues that can disrupt real-time PLC communication.
Ensure the adapter is set to or PROFIBUS correctly on the hardware switch. Setting up PG/PC Interface
Siemens drivers for XP are secure but may lack old WHQL signatures on certain Service Pack levels. Click Continue Anyway to bypass the warning and finish installation. Firmware Mismatch Problems
The wizard screen changed.
The Siemens PC Adapter USB A2 (part number 6GK1571-0BA00-0AA0) is a critical piece of hardware for industrial automation professionals. It bridges the gap between modern engineering PCs and legacy Siemens programmable logic controllers (PLCs) over MPI and PROFIBUS networks.
Run the driver setup executable ( .exe file) provided by Siemens.
Additionally, Windows XP’s driver model (WDM – Windows Driver Model) is vastly different from Windows 10’s (WDF). You cannot use modern drivers on XP. You need drivers specifically compiled for XP (32-bit or 64-bit – though 64-bit XP is extremely rare).
button in the "Interfaces" section to manually add it to the active list. Siemens SiePortal
: If not already present, you can find the driver disk on the Siemens Industry Online Support (SIOS) Siemens SiePortal Installation Procedure
Suggested further actions (one-line)
Select and click Next .
What are you currently running?
If you are dealing with specific error codes during installation, tell me or which exact version of STEP 7 you have installed so I can provide targeted troubleshooting steps. Share public link
What (like STEP 7 V5.5) are you using?
Given the lack of official support, users must employ several workarounds:
This indicates a driver conflict or an incomplete software installation.
A small utility from NirSoft that gives exhaustive USB information, even without drivers installed.
If no XP driver exists, the alternative is to run Windows XP as a virtual machine (using VirtualBox or VMware) on a modern Windows host. Here, the USB adapter is passed through to the virtual XP environment. However, this introduces timing and latency issues that can disrupt real-time PLC communication. pc adapter usb a2 driver windows xp
Ensure the adapter is set to or PROFIBUS correctly on the hardware switch. Setting up PG/PC Interface
Siemens drivers for XP are secure but may lack old WHQL signatures on certain Service Pack levels. Click Continue Anyway to bypass the warning and finish installation. Firmware Mismatch Problems
The wizard screen changed.
The Siemens PC Adapter USB A2 (part number 6GK1571-0BA00-0AA0) is a critical piece of hardware for industrial automation professionals. It bridges the gap between modern engineering PCs and legacy Siemens programmable logic controllers (PLCs) over MPI and PROFIBUS networks. Run the driver setup executable (
