Simulink with Modbus TCP in the Realtime Machine

I saw that there is no Modbus block in Simlunk, and checked the blocks of the Simulink Real Time and could not find it either. How we can create a model that uses modbus to comunicate to the controller if there is no Modbus compatibility in Simulink? The instrument toolbox only can use MATLAB and not Simulink, which I did not know when I bought it.....

Answer 1

[Diego Kuratli]

Modbus TCP support for Simulink Real-Time is provided by Speedgoat:

MODBUS RTU and TCP Master/Slave Protocol for Simulink | Speedgoat

Answer 2

[Sai Sri Pathuri]

As a workaround, you may use a MATLAB Function block and use modbus object inside it.

Answer 3

[Diego Kuratli]

Modbut TCP support for Simulink Real-Time requires a dedicated I/O module from Speedgoat, see:

https://www.speedgoat.com/products-services/communications-protocols/modbus-tcp

The regular Ethernet ports on the target machine can be used for UDP/IP, TCP/IP, PTP, and EtherCAT Master only.

Answer 4

[Fernando Angel]

Hi, I need Simulink Modbus blocks for code generator,that is, generate code to implement modbus in microcontrollers, using simulink code generation., is this possible?

Thanks.

[Marlon Trujillo]

The thing is that Modbus directly is not available in Simulink for code generation... So, that sounds like is not possible.

There is a workaround I found for a "live simulation in simulink" using interpreted functions and calling them from Simulink... But you'll need to simulate in simulink, no to export code...

[Fernando Angel]

Thank you very much for answering. I have already managed to port freemodbus 1.6 to all my microcontrollers, PIC18, dsPICs, Cortex M3 / M4.

Regards.

Fernando.

[Bartosz Soltowski]

Hi Fernando,

I want to generate Simulink model for Cortex M3 microcontroller which will provide communication using Modbus protocol. Could you please give me some indication how did you do it? Did you use Modbus Explorer at all?

Thanks,

Bartosz