Simulink Real-Time UDP Send error: "Operands to the || and && operators must be convertible to logical scalar values"

I have a model with a UDP Send block from the Simulink Real-Time Library. When I update my model I get the following error:

Error evaluating < 'InitFcn'> callback of slrtudpsend block (mask) '< operandsError/UDP Send>'. Callback string is '% Validate model udpvalidatemodel(gcb);'

Caused by:

• ERROR: Operands to the and && operators must be convertible to logical scalar values.

Answer 1

[MathWorks Support Team]

This error means that there is an invalid setting for the "Local Port" Parameter of the UDP Send block. This could be because this parameter depends on a variable that is not defined in the workspace. See the attached model which reproduces the error because variable "myVar" does not exist.