write multiple value in serial buffer using case structure

[rushin010]

my VI is here

[RavensFan]

Please take some tutorials.  Learning how to connect different datatypes to a case structure is a very basic skill.

LabVIEW Introduction Course - Three Hours
LabVIEW Introduction Course - Six Hours

Attached is a VI that demonstrates what I'm talking about.

[rushin010]

thank you for your  support. i have some doubt about threshold 1D how it works? like i put three value in array 0.6 ,0 , and -0.2 for value greater than 0.6 i want to write 0, for value less than -0.2 i want to write 2 and for other values , i want to write 1. but i get two values in buffer 0 and 2. and many times i got error message like this.

[RavensFan · Accepted solution]

"A doubt about how threshold 1-D array works" ?  You don't believe it works?  Or you have a question about how it works.

Look how the context help and/or the detailed help to explain how it works.  It searches for the value where it falls in the array.  If it falls between values, it tells you where in proportion it falls.  But you don't care about that.  Just round down.  That way if it is between elements 0 and 1, it will give a 0, between 1 and 2, the number one.  Between element 2 and 3, it will give a 2.  Make sure the values are in sequential order, preferably ascending (it may work in descending order, but I'm not sure.)

Your error screenshot is something else.  It means something is wrong with your serial port.

[rushin010]

i understand it. it works. thank you very much

[rushin010]

hello i am trying previous solution in this VI. can you help me? how to solve this error?

[RavensFan]

Express VI's use that evil dynamic datatype.  You don't really know what is the underlying data in that blue wire.  You need to use the Express VI  "From DDT" to convert it to a real piece of data such as a double in order to work with it.  Look at the Express >> Signal Manipulation palette.