Why would I encounter an error message about unsuitable bus signal using DDS Blockset?

Hi,

I encounter the error : " The 'input port 1' of 'ddsblockset1/Outport' requires a bus, but it receives a non bus signal from the 'output port 1' of 'ddsblockset1/Write DDS Sample'."

The data type of the input and output ports has been selected as the "Dataype" defined by DDS. I don't seem to have any difference from the official example settings. Why did I encounter an error?

[Naga]

Which example are you trying to use

[昱颖 陈]

I modified my own model followed the shapedemo example

[praguna manvi]

can you please share your model

Answer 1

[SACHIN KHANDELWAL]

Hi @昱颖 陈,

Based on the image provided, it appears that the issue is that 'ddsblockset1/Outport' is expected to receive a 'Bus' signal, while 'ddsblockset1/Write DDS Sample' is providing a 'Non-Bus' signal.

Additionally, it seems that the output of your logic is currently a 'double'. To resolve this, try changing the output data type to a 'Bus' data type within your intermediate logic. If the issue persists, you can use a 'Bus Creator' block to convert the 'Non-Bus' signal into a 'Bus' signal.

For more detailed guidance, please refer to the following documentation: https://www.mathworks.com/help/simulink/slref/buscreator.html

[昱颖 陈]

Thank you for your answer. I changed the data type and other settings, and it seems that there are no more errors！