Hi @yanhong,
at first, my fmu was model of DC engine which I found as a template in OpenModelica examples. After an unsuccessful import of the DC motor model into LabVIEW by "LabVIEW support for FMI for Model Exchange", I create own new model which realizes sum of two integer numbers that are defined as inputs. Model have one integer output. However, attempt to import this easy model of sum wasn't successful. I can provide you my models, If you want?.
regards Lukas