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Modbus TCP Client

Simulink Driver Blocks for Modbus TCP Communication

Native Modbus TCP client blocks enable communication between real-time target machines and external devices in power grids and automation plants.

The driver blocks handle the data exchange between the connected Modbus TCP servers and the application running on the real-time target computer.

Modbus TCP is ideal for rapid control prototyping (RCP) of control stations such as supervisory control and data acquisition (SCADA) systems and programmable logic controllers (PLC). It also enables hardware-in-the-loop (HIL) simulation using MATLAB and Simulink for testing remote servers such as motor drives, sensors, and intelligent electronic devices (IED).

Get started with Modbus TCP by adding the driver blocks to your Simulink model. No additional tools are required to get it running. Native Modus TCP is supported both on the Ethernet interfaces of the real-time target machines and over plug-in Ethernet I/O modules (see Hardware Selection Guide).

Key Features

  • Data exchange with up to 256 Modbus TCP servers
  • Supports unit addressing
  • Supports access to coils, discrete inputs, holding registers and input registers of external servers
  • Supports FC1, FC2, FC3, FC4, FC5, FC6, FC15 and FC16 function codes
  • Asynchronous data exchange saves computing time for real-time tasks
  • Multiple client stations can run on one target machine, either controlling servers in the same network or separate networks


I/O Access  
Communication standard  Implementation according to the Modbus Organization
Maximum number of connected servers  256 servers per client station
Number of client nodes

Multiple Ethernet interfaces can be fitted to a target machine

Each Ethernet interface can be connected to another Modbus network

One Ethernet interface can represent multiple clients through IP aliasing

Function codes supported FC1, FC2, FC3, FC4, FC5, FC6, FC15, FC16
Communication layer TCP/IP
Item ID Product Name Components
2A724 Modbus TCP Client/Server Runtime License
  • 1 x Modbus TCP Client Runtime License
  • 1 x Modbus TCP Server Runtime License
  • Driver block library for Simulink Real-Time 
  • Comprehensive documentation and Simulink example models 


Pricing information
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Included in the Delivery

Common Applications

Supported target machines

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