Use the Diagnostics button in the PG/PC Interface settings to test if the device is communicating correctly before attempting to go online with a PLC. Pricing and Availability The Siemens Simatic S7 PC Adapter USB A2
If using XP in a virtual environment (VMware/VirtualBox), ensure the USB controller is set to USB 2.0 . Using USB 1.1 settings often causes "internal error" or communication failure.
You must run the installer with full administrative privileges. Installation Steps To ensure a clean installation, follow this sequence: