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IO641: PROFIBUS DP Master I/O Module

Configurable PROFIBUS DP master I/O module, with Simulink® driver blocks

The IO641 I/O module is a PROFIBUS module to connect real-time target machines to external industrial devices. 

The IO641 handles the complete data exchange between the connected PROFIBUS DP Slaves and the real-time application. The data exchange is processed via a dual-port memory. The module acts as one PROFIBUS Master exclusively. 

This I/O module is ideal for rapid control prototyping of industrial devices such as programmable logic controllers (PLC) and hardware-in-the-loop simulations using MATLAB® and Simulink® for testing industrial equipment such as motor controllers.   

The IO641 I/O module is fully compatible with the Simulink® Real-Time™ workflow. The extensive Simulink® Real-Time™ driver blockset offers comprehensive functionality, and firmware updates are easily available, as the Setup driver block downloads microcontroller firmware each time a target application is initialized.

Key Features

  • Exchange data with up to 125 devices via the PROFIBUS DP protocol
  • Easy-to-use graphical network editor
  • DMA enables fast data exchange on PCI bus
Form factor PCI/PCIe/mPCIe 
Power requirements 650 mA @ +3.3 V DC
Bus 32 bit/33 MHz, Revision 3 of PMC specification, P1386.1 
Connectors D-sub connector, 9 pins 
Operating temperature -20 °C to +70 °C
Certification  CE
I/O Access
Communication standard  DPV0 and DPV1 
Maximum number of supported slaves  125
Cyclic communication Supported
Acyclic communication On demand
Maximum number of total cyclic input data  5712 bytes 
Maximum number of total cyclic output data  5760 bytes
Maximum number of cyclic input data per slave  244 bytes 
Maximum number of cyclic output data per slave  244 bytes 
Baud rate  9.6 kBaud to 12 MBaud
Item ID Product Name Components
2X641* IO641
  • 1 x IO641 I/O module
  • Driver block library for Simulink® Real-Time™
  • Comprehensive documentation and Simulink® example models 
  • Installation into real-time target machine

Key to X in Item ID
Please replace the X with the code number of the specific target machine into which this I/O module shall be installed:

  • A = Performance real-time target machine (PCI)
  • B = Performance real-time target machine (PCIe)
  • C = Baseline and Unit real-time target machines (mPCIe)

Pricing information
We don't publish pricing information on our website. Upon request by e-mail or phone we can provide a complete price list covering our entire product portfolio in various currencies. We recommend that you get in touch with us to discuss your specific needs. We can then quickly provide you with a tailored quotation including technical and pricing information.

IO641: PROFIBUS DP Master I/O Module IO641: PROFIBUS DP Master I/O Module

Included in the Delivery

Common Applications

Supported target machines


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