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]

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 2

[Sai Sri Pathuri]

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

[Marlon Trujillo]

Matlab functions should not be use it. We need to use interpreted ones. But this is not the answer for the real time topic.

Answer 3

[Fernando Liozzi]

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 Liozzi]

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.