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Entry type: Product note Entry ID: 15315777, Entry date: 05/27/2003

New PC Adapter USB Now Available

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The new SIMATIC PC Adapter USB connects a PC via its USB interface with the MPI/DP interface of a S7/C7 system. No slot is required in the PC, i.e. the adapter is also suitable for non-expandable PCs, such as notebooks. 

In to-day's PCs the USB port has gained more and more importance. To list the advantages of the USB port compared to the serial (RS 232) port would be superfluous here. Many notebook computers are supplied without serial port already. We are following the trend away from the serial port with the new PC Adapter USB, which will replace the PC Adapter with serial port in the medium term. 

The new PC Adapter USB can be used to program all S7-300 and S7-400 CPUs via the MPI/DP port and the S7-200 CPUs via the PPI port.

Features and new functions:

  • Automatic baud rate and profile search
  • Up to 16 communication connections, of which up to 4 can be to slaves
  • Routing supported
  • The adapter is supplied via the MPI port (24V). The previous PC adapter required a separate 5V supply.
  • The firmware of the new PC adapter can be updated at a later stage for additional functions or error corrections.
  • Compatible with USB V1.1.
  • Considerably increased performance (factor 3)

Transmission speeds:

Baud Rate 


Profibus DP

9 600 (bits/s)



19 200 (bits/s)



45 450 (bits/s)



93 750 (bits/s)



187 500 (bits/s)



500 (Kbits/s)



1 500 (Kbits/s)



Scope of supply

The scope of supply of the PC Adapter USB includes the following components:

  • CD ROM "SIMATIC Software PC Adapter USB", with software and documentation
  • USB cable with 5 m length
  • MPI cable with 0.3 m length (limited for technical reasons)

Software preconditions

Working with the SIMATIC PC Adapter USB requires a PC with one of the following operating systems:

  • Windows 2000
  • Windows XP Professional
  • Windows XP Home

and a SIMATIC software package permitting MPI communication (e.g. STEP 7)

Hardware preconditions

PC with a USB port and a CD-ROM drive.

Possible connections

The PC adapter can be connected to all S7-300, S7-400 PLCs and the IM 151-7 CPU of ET 200S. The WinAC Slot CPUs are exceptions, because they provide no 24V supply.

Ordering Data


Order No.

PC Adapter USB

6ES7 972-0CB20-0XA0

Please get in touch with your SIMATIC contact at your local Siemens Office if you have any further questions.

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