3 m RS‑232C USB‑to‑DB9 cable for Siemens 6SE70 inverters—firmware boot and drive monitoring with wide Windows support.
Product Overview
The Siemens 9AK1012‑1AA00 is a dedicated 3 meter RS‑232C combination cable featuring a USB interface for PC connection and a DB9 connector to Siemens 6SE70 variable frequency drives. It enables firmware updates (“boot function”) and real‑time drive monitoring. Factory‑made by Siemens for guaranteed compatibility, it works with Windows XP through Windows 11. This cable is essential for maintenance engineers needing reliable communications with legacy Siemens drive systems.

How to Use
- Install USB driver from provided CD or download from Siemens website.
- Connect the USB end to your PC and DB9 end to the inverter’s RS‑232 port.
- Launch your drive configuration or monitoring software (e.g. Siemens STARTER or custom tool).
- Power on the drive; software will detect the device via COM port.
- For firmware updates, enter bootloader mode on the drive per Siemens manual then send firmware.
- For live monitoring, use software diagnostics panels.
Tips: Use shielded cables to minimize noise. Verify COM port settings (baud rate typically 19 200 bps). Always follow Siemens safety instructions when powering or updating drives.
Frequently Asked Questions (FAQ)
- What length is the cable?
Three meters. - Which PC OS are supported?
Windows XP, 7, 8, 10, 11 (32/64‑bit). - Does it include drivers?
Yes—a mini CD includes USB drivers; downloadable if lost. - Is it official Siemens or 3rd‑party?
9AK1012‑1AA00 is official Siemens OEM. - What connector types?
USB‑A on PC side, DB9 male on drive side. - Which drives are compatible?
Siemens 6SE70 series VFDs with RS‑232 port. - Can I use it for other Siemens drives?
Only those with matching RS‑232 protocol—check manual. - Does it support live data monitoring?
Yes, with appropriate software. - Is firmware update safe?
Yes, when following Siemens procedures and power stability. - What’s the weight?
Approximately 0.13 kg.
User Review Summary
From PLC Cables, Inc. reviews (1 review): “Works awesome!” Users appreciate plug‑and‑play ease, reliable connectivity, lifetime guarantee from some resellers. No major cons noted, though some mention needing driver downloads when CD is unavailable.
Comparison with Competing Products
PLC Cables, Inc. USB‑9AK1012‑1AA00 ($59.95): includes lifetime guarantee, same-day shipping, but non‑authorized reseller.
Radwell Siemens 9AK1012‑1AA00 ($354 new): official Siemens origin, 2‑year Radwell warranty, higher price.
Generic clones on Amazon (~$25–$30): low cost, often lack official Siemens quality and limited support.
Technical Specifications
Cable length: 3 meters
Interface: USB‑A to RS‑232 DB9 male
Protocol: RS‑232C
Function: firmware boot, drive monitoring
Supported OS: Windows XP/7/8/10/11 (32/64‑bit)
Weight: 0.13 kg
Manufacturer: Siemens
Part number: 9AK1012‑1AA00
Brand or Manufacturer Info
Siemens is a leading global industrial automation provider. Their 6SE70 VFD series is widely used in factories. OEM cables ensure full compatibility and adherence to Siemens quality standards.
Purchase Recommendations
Amazon.ca: Compatible Siemens 6SE70 Debugging Cable 9AK1012‑1AA00
Aiensn:https://www.aiensn.com/product/9ak1012-1aa00/
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