Seeing error-The block 'ABCblock/xyz' has a discrete sample time that does not match the sample time 0.02 of the If block 'ABClocl/xyx/IF'.

Hello All,

Seeing an error in simulink "The block 'ABCblock/xyz' has a discrete sample time that does not match the sample time 0.02 of the If block 'ABClocl/xyx/IF'. controlling its execution.

Solver settings are Variable step/auto

Can anyone let me know suggestions on how to resolve this error?

Answer 1

[Govind KM]

@yogi,

Generally, setting “Sample Time” in “If-Action” subsystems is not recommended as it can cause sample rate transition to be implicitly mixed up with block algorithms. This can often lead to ambiguity and confusion in Simulink models. The below link can provide more information on this:

https://www.mathworks.com/help/simulink/ug/sampletimehiding.html

To set “Sample Time” for the ‘If” block, all blocks in the “If-Action” subsystem must execute at the same rate as the driving “If” block. To meet this requirement, set the “Sample Time” for each block to either inherited (-1) or the same value as the “If” block sample time, which seems to be 0.02 in this case. For details on the execution of an “If-Action” subsystem, you can refer to the documentation:

https://www.mathworks.com/help/simulink/ug/select-subsystem-execution.html#mw_0b57f51f-80dc-4d0f-a164-89812535757d

Hope this is useful to you.