The SIMATIC PC Adapter USB A2 Go to product viewer dialog for this item.
Follow the prompts. The installer will copy the .sys and .inf files to the Windows system directory. 3. Connecting the Hardware Plug the USB A2 adapter into your PC. Windows XP will display the "Found New Hardware Wizard." Select "No, not this time" for the Windows Update search. Select "Install the software automatically."
| Approach | Feasibility | |----------|--------------| | Dual-boot XP 32-bit | ✅ Best | | VMware + USB passthrough | ⚠️ Unstable – USB timing jitter causes MPI timeouts | | Use PC Adapter USB A1 (older) | ✅ Slightly simpler driver (no extra COM layer) | | Replace with modern adapter (e.g., USB A2 V2.1 + Win10 + STEP 7 V5.6) | ✅ Recommended | | Use RS232 adapter + PC/PPI cable (S7-200 only) | ✅ If PLC supports RS232 | Simatic Pc Adapter Usb A2 Driver Windows Xp
Driver Overview
: It is strongly recommended to install a Siemens editor (such as S7 MicroWin S7 Classic TIA Portal attempting to install the standalone driver. Siemens SiePortal Step-by-Step Installation Guide The SIMATIC PC Adapter USB A2 Go to
The Simatic PC Adapter USB A2 is a compact, USB-based communication adapter designed for use with Siemens' Simatic PLCs. It enables fast and reliable data transfer between the PLC and the computer, supporting various communication protocols, including MPI, Profibus, and USS. The adapter is widely used in industrial automation applications, such as manufacturing, process control, and building automation.
One of the most "interesting" aspects of this setup is the Baud Rate Guessing Game. The A2 driver on XP often defaults to trying to auto-negotiate the speed of the MPI network. If the PLC is old and the cable is long (common in factories), the auto-negotiation fails. The engineer has to manually dive into the "Set PG/PC Interface" control panel applet—a staple of Siemens software—and force the transmission rate down to 187.5 kbps or even 19.2 kbps to get a connection. Select "Install the software automatically
Finding the Simatic PC Adapter USB A2 Driver for Windows XP
Would you like a direct link to the last XP-compatible driver version from Siemens?