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IO751: PROFINET Controller I/O Module

Configurable PROFINET Controller I/O module, with Simulink® driver blocks

The IO751 I/O module is a PROFINET module to connect real-time target machines to external devices. 

The IO751 handles the complete data exchange between the connected PROFINET Devices and the real-time application. The data exchange is processed via a dual-port memory. The module acts as one PROFINET Controller 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 IO751 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

  • 2x 10BASE-T/100BASE-TX isolated, auto-crossover function Ethernet connectors enable easy network integration
  • Compatible with Real-Time Cyclic Protocol (RTC) – Class 1 & Class 2 (unsynchronized), Class 3 (synchronized)
  • Isochronous real-time allows fast and synchronous communication at 250 µs
  • 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 2x RJ45 socket
Operating temperature 0 °C to +70 °C (PCI, mPCIe) 
0 °C to +55 °C (PCIe)* 
Certification  CE
I/O Access
Maximum number of input bytes  5652 
Maximum number of output bytes  5700 
Maximum number of sub-modules  2048 
Total maximum number of application relations (AR)  128 (64 for IRT communication) 
Number of communication relations (CR) per AR  1 Input IOCR, 1 Output IOCR 
Supported send clock for RT communication  1 ms, 2 ms, 4 ms 
Supported send clock for IRT communication  250 µs, 500 µs, 1 ms, 2 ms, 4 ms 
Automatic Name Assignment  Supported 
Acyclic communication  On demand 
Alarm handling  On demand 
Baud rate  100 MBit/s
Data transport layer  Ethernet II, IEEE 802.3 
* Special hardware version is available which supports operating temperatures from 0 °C to +70 °C
Item ID Product Name Components
2X751* IO751
  • 1 x IO751 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 = Mobile, 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.


IO751: PROFINET Controller I/O module 

Included in the Delivery

Common Applications

Supported target machines


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