6GK 1571-0BA00-0AA0 PC USB A2 Cable for Siemens S7 - MPI/USB Adapter

In this review the 6GK 1571-0BA00-0AA0 PC USB A2 Cable is assessed as a practical programming and communication cable for technicians and engineers working with Siemens S7 PLCs. The bottom line is that this cable is a straightforward, compatible USB-Adapter that bridges a modern PC or notebook to MPI/PPI interfaces on S7-200, S7-300, and S7-400 systems, with optocoupler isolation to protect circuits and maintain communication quality. It is aimed at users who need reliable programming access without proprietary hardware constraints.

Key Features

• Model compatibility: Works as a compatible replacement for the 6GK1571-0BA00-0AA0 adapter, making it easy to swap into existing setups that expect that model.
• USB 2.0 connectivity: Provides a USB V2.0 connection to connect a PG/PC or notebook to MPI or PPI interfaces, enabling direct programming and diagnostics.
• Wide software support: Supports 32/64 bit systems and Windows 7 environments so legacy engineering laptops remain usable for PLC work.
• Optocoupler isolation: Built-in isolation protection helps protect the PC and PLC circuit from interference and improves communication stability during programming.
• Automatic baud handling: Automatically meets the required baud rate for MPI and PPI connections, removing a common configuration step for field engineers.
• Multi-series suitability: Designed for use with Siemens S7-200, S7-300, and S7-400 series PLCs, covering a broad range of industrial devices.

Who It's For

The cable is ideal for control engineers, maintenance technicians, and system integrators who need a compatible USB-to-MPI/PPI adapter to program and troubleshoot Siemens S7 PLCs without sourcing original manufacturer hardware. It suits workshop benches and field service kits where a compact USB adapter and Windows 7 compatibility are required.

It is less suitable for users who need official manufacturer warranty support or guaranteed compatibility with the newest software environments beyond Windows 7; teams relying on vendor-certified tools should consider sourcing the official adapter instead.

Pros & Cons

Pros

• Compatible replacement form factor that integrates with existing S7 programming workflows.
• USB 2.0 interface provides reliable connectivity for laptops and PCs used in engineering tasks.
• Optocoupler isolation helps prevent electrical interference and protects devices during communications.
• Automatic baud rate handling simplifies setup and reduces configuration errors.

Cons

• Not an original brand adapter, so users needing official certification or support may prefer the OEM part.
• Primary documented software support highlights Windows 7 and may not explicitly cover very recent OS releases without additional drivers.

Specifications

Model	Compatible 6GK1571-0BA00-0AA0
Function	PC Adapter USB A2 for MPI/PPI programming
USB	USB V2.0
Supported PLC series	Siemens S7-200, S7-300, S7-400
Isolation	Optocoupler isolation protection
OS compatibility	32/64 bit, Windows 7 (documented)
Automatic features	Automatic baud rate handling

Our Verdict

The 6GK 1571-0BA00-0AA0 PC USB A2 Cable is a pragmatic, cost-effective replacement for engineers who need direct USB-to-MPI/PPI connectivity for Siemens S7 PLCs. Its isolation protection, USB 2.0 link, and automatic baud handling make it a reliable workhorse for programming and troubleshooting. Those requiring official manufacturer support or explicit modern OS certification should weigh that against the cable's practical value.

Frequently Asked Questions

Will this adapter work with S7-300 and S7-400 PLCs?
Yes. The adapter is designed to support Siemens S7-200, S7-300, and S7-400 series for programming and communication.

Does it require special drivers for Windows 7?
It supports 32/64 bit Windows 7 as documented; typical use requires the appropriate USB adapter driver to be installed on the PC.

Is the cable electrically protected?
Yes. The adapter includes optocoupler isolation protection to help resist external interference and protect communication quality.