Products search search close

IO754: Modbus TCP Server I/O Module

Modbus TCP Server I/O module, with Simulink® driver blocks

The IO754 I/O module is a Modbus TCP module to connect real-time target machines to external industrial devices. 

The IO754 handles the complete data exchange between the connected Modbus TCP client and the real-time application. The data exchange is processed via a dual-port memory. The module acts as one Modbus TCP server  exclusively.

This I/O module is ideal for rapid control prototyping of devices in industrial automation plants such as motor controllers, sensors, I/O stations, and robots. Furthermmore, the IO754 can be used to perform hardware-in-the-loop (HIL) simulations for PLC testing, virtual commissioning, and factory acceptance tests using MATLAB® and Simulink®.

The IO754 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
  • Easy register definition directly in Simulink®
  • 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
TCP port 502 
Modbus function codes 1, 2, 3, 4, 5, 6, 15, 16 supported 
7, 23, 43 on demand 
Maximum number of coils/registers per telegram  125 (FC3, FC4) 
123 (FC16) 
2000 (FC1, FC2) 
1968 (FC15) 
Maximum number of input bytes  5760 (I/O Mode) 
65536 (Message Mode) 
Maximum number of output bytes  5760 (I/O Mode) 
65536 (Message Mode) 
Fragmentation  Supported 
Baud rate  10 and 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
2X754* IO754
  • 1 x IO754 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.


Included in the Delivery

Common Applications

Supported target machines


Follow Speedgoat LinkedIn