Siemens 6GK1571-0BA00-0AA0 PC Adapter USB A2 PROFIBUS/MPI

6GK1571-0BA00-0AA0 USB adapter for PROFIBUS and MPI programming

The Siemens SIMATIC NET PC Adapter USB A2, 6GK1571-0BA00-0AA0, is a compact USB 2.0 interface that lets an engineering laptop or PC talk to SIMATIC S7 controllers over PROFIBUS or MPI. It replaces the older serial RS 232 adapters and PCI cards with a single plug-in device that needs no separate power supply, because it draws its energy from the USB port.

The part number reads as a SIMATIC NET communications product (6GK1 family), type 571 for PC adapters. The scope of supply includes a 5 m USB cable and a 0.3 m MPI cable, so a service engineer can walk up to a cabinet and connect straight away. Seven Star LLC supplies the 6GK1571-0BA00-0AA0 in Oman and the GCC as an independent supplier based in Muscat.

Technical specifications of the 6GK1571-0BA00-0AA0

How the USB A2 adapter works

The adapter presents itself to Windows as a communication device and exposes the PROFIBUS and MPI network to engineering software such as STEP 7 via the PG/PC interface settings. On the field side the 9-pin Sub-D socket carries RS 485 signals, so the adapter can join a running PROFIBUS segment or an MPI network as a programming station.

Because the transfer rate range runs from 9.6 kbit/s up to 12 Mbit/s, the same adapter can follow whatever baud rate a plant has configured. The device is not mounted on a rail and does not hold a station address of its own in the sense of a permanent node; the address is assigned by the software when the connection is parametrised.

Where the 6GK1571-0BA00-0AA0 fits in the system

The adapter is a programming and diagnostics tool, not a permanent network node. Typical partners are SIMATIC S7-300 and S7-400 CPUs with an MPI or DP port, ET 200 distributed I/O, drives with PROFIBUS option cards and many third-party PROFIBUS devices that are commissioned with a laptop.

Related Siemens items that customers often ask about together with the 6GK1571-0BA00-0AA0 include PROFIBUS cables and connectors with a programming socket, and for Ethernet-based controllers a standard network adapter instead. If your controller only has PROFINET, this USB adapter is not the right interface; check the CPU ports before ordering.

Selection and ordering checklist

• Confirm the PLC exposes an MPI or PROFIBUS DP port and that you have a 9-pin Sub-D connection point.
• Check the laptop operating system against the compatibility range printed on the datasheet; very recent Windows releases may need a driver check with your engineering software version.
• Verify that the 6GK1571-0BA00-0AA0 is the USB variant you need and not a serial or PCI/PCMCIA predecessor.
• Decide whether you need spare MPI or PROFIBUS cables and a bus connector with a PG socket.
• State the quantity and whether a unit is for a fixed maintenance kit or a one-off project.

Installation, commissioning and maintenance

Install the driver from your SIMATIC software before plugging in the adapter the first time, then connect the USB cable and select the adapter in the PG/PC interface dialog. Set the bus parameters (profile, highest station address, transmission rate) to match the network, otherwise the adapter may disturb running communication.

Never connect to a live PROFIBUS network at a wrong baud rate. Keep the 5 m USB cable undamaged and avoid long extensions through unshielded hubs, which are a common cause of dropped connections. The adapter is rated for 0 to 60 °C, so do not leave it on a hot cabinet surface in direct sun. It contains no user-serviceable parts; if port diagnostics show a fault, replace the unit.

Typical applications in Oman and the GCC

Maintenance teams in oil and gas facilities, power stations, desalination plants and petrochemical sites in the region still run many S7-300 and S7-400 based systems with PROFIBUS. An engineer on a compressor skid, a water treatment package or a motor control centre needs a reliable way to go online with the controller, back up a program or check a DP slave.

The USB A2 adapter suits this field work: it is small enough for a tool bag, needs no external supply and tolerates the 0 to 60 °C working range typical for control rooms and enclosures. In dusty or humid coastal plants, keep it in its original case between jobs.

Related interface options

Information to send with an RFQ

• Part number 6GK1571-0BA00-0AA0 and quantity.
• Controller family and CPU type you will connect to.
• Laptop operating system and STEP 7 or TIA Portal version.
• Delivery location in Oman or the GCC and required lead time.
• Whether original packaging and the supplied cables must be included.

Related Siemens products: Siemens 6GK1900-0UB00-0AA0 SCALANCE CLP 2GB Removable Storage, Siemens 6GK5798-8MF00-0AA1 SCALANCE W7 Series DIN Rail Mounting Adapter, Siemens 6GK5766-1GE00-7TA0 SCALANCE WAM766-1 EEC IWLAN Access Point, Siemens 6GK5795-6MP10-0AA0 ANT795-6MP IWLAN Omnidirectional Antenna, Siemens 6GK1503-2CC00 SIMATIC NET PROFIBUS Optical Link Module (OLM/G11-1300) and Siemens 6XV1875-5AH50 N-Connect Antenna Connection Cable, 5m.

Documents and quotation

Send us the part number 6GK1571-0BA00-0AA0 and we will confirm available documents and stock status. Quotations are prepared by Seven Star LLC, an independent supplier in Muscat serving Oman and the GCC.