Siemens 6GK1571‑0BA00‑0AA0 PC Adapter USB A2 – UBS to MPI/PROFIBUS

Intro Summary
A USB 2.0 adapter (5 m cable + 0.3 m MPI cable) for seamless PC-to‑SIMATIC S7 via MPI/PROFIBUS communications.

Product Overview
The Siemens 6GK1571‑0BA00‑0AA0 is an official PC Adapter USB A2 designed for PC-to‑SIMATIC S7 connections via PROFIBUS/D MPI networks. As an evolution of the original PC Adapter USB, it supports USB V1.1, 2.0, and 3.0 interfaces. It ensures smooth, reliable communication across network nodes at up to 12 Mbps and includes port diagnostics for faster troubleshooting . The product ships with a 5 m USB cable and 0.3 m MPI cable, compatible with Windows XP through Windows 7 and newer.

How to Use

  1. Connect USB to PC: Plug the USB‑B cable (included) to your computer.
  2. Hook MPI/PROFIBUS: Attach the 0.3 m MPI cable to the adapter and your PLC’s MPI/PG port.
  3. Install Software: Ensure you have STEP 7 V5.5 SP4+ or TIA Portal V12 SP1+.
  4. Configure Interface: Open “Communication Settings” or “Set PG/PC Interface” and select PC Adapter USB A2 (Auto/MPI/PROFIBUS) .
  5. Ensure Diagnostics LEDs: Monitor ACTIVITY and FAULT LEDs—for active communication or issues.
  6. Safely Disconnect: Use “Safely Remove Hardware” before unplugging .

Frequently Asked Questions (FAQ)

  1. What system compatibility? Works with S7/M7/C7 via MPI or PROFIBUS.
  2. OS support? Windows XP onward; modern Windows included.
  3. Does it need external power? No, it’s powered via USB (5 V, 200 mA) .
  4. Max data rate? Up to 12 Mbps over PROFIBUS .
  5. Cable length? 5 m USB cable; 0.3 m MPI lead included.
  6. Can use multiple adapters? Only one per PC .
  7. Is the older model still usable? It replaces the PC Adapter USB (6ES7972‑0CB20‑0XA0).
  8. Diagnostic LEDs? Yes—USB 5 V, ACTIVITY, FAULT signals.
  9. Isolation? SELV isolation between USB and MPI/DP .
  10. Industrial certifications? EMC, IP20, IEC 60950, RoHS, etc.

User Review Summary
Customer feedback on aftermarket Amazon clones notes easy installation and reliable functionality:

“Perfect, just what I needed. Easy install and setup.” – PLC Cables
“Works with current Siemens software” – Guy Bilodeau
All emphasize the convenience of “one cable for PROFIBUS and MPI”.

Comparison with Competing Products

ProductFeature HighlightsPrice*
Siemens 6GK1571‑0BA00‑0AA0 (PLC Department)OEM warranty, genuine Siemens unit, $487–1,437~$487–$1,437
Siemens 6GK1571‑0BA00‑0AA0 NSMPNew surplus/minimal packaging, $965~$965
6GK1571‑0BA00‑0AA0 Cable (Amazon seller)Aftermarket clone, works with TIA/STEP‑7, ~$75.90~$76
Siemens 6GK1571‑0BA00‑0AA0 (PLC Trainer & Cable)Official Siemens with support, $79.95~$80

*Prices vendor-provided; verify availability.

Compared to authentic Siemens units, the cheaper clones are functional, but may lack official support—OEM versions offer full warranty and spare parts.

Technical Specifications

  • Dimensions: 105 × 58 × 26 mm
  • Weight: ~0.365 kg (with cables)
  • Interfaces: USB 2.0 (High Speed), RS‑485 Sub‑D 9-pin
  • Power: USB‑supplied 5 V, 200 mA, ~1 W
  • Network Speeds: 9.6 kbps–12 Mbps across MPI/PROFIBUS
  • Operating Temp: 0–60 °C, Storage/Transport: –40 to +70 °C
  • Certifications: IP20, EMC (EN61000‑6‑1/2/3/4), IEC60950, RoHS

Brand or Manufacturer Info
Siemens Digital Industries is a global leader in PLC and automation technology. The PC Adapter USB A2 (6GK1571‑0BA00‑0AA0) is their latest field communication adapter for SIMATIC S7 series—known for reliability, industrial-grade specs, and excellent support, including diagnostics and official documentation .

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