Look at the physical LEDs on the PC Adapter USB A2. The Power LED should be solid green. If the Activity or MPI/DP LEDs are blinking red or entirely off when connected to a live PLC, check your MPI/PROFIBUS cable connection. The adapter requires the PLC side to be active to establish bus synchronization.
The baud rate configured in the PG/PC Interface does not match the actual physical configuration of the PLC network. siemens pc adapter usb a2 driver windows xp
Filter the results by "Download" and look for the latest Simatic Net software or STEP 7 Service Packs compatible with Windows XP. Look at the physical LEDs on the PC Adapter USB A2
You should see listed without any yellow exclamation marks or red error symbols. Configuring the "Set PG/PC Interface" The adapter requires the PLC side to be
Never plug the USB adapter into the PC before installing the software. Doing so causes Windows XP to assign a generic, non-functional driver to the device. Insert your installation media. Run the setup wizard and complete the installation.