Callback function file to execute when predefined period passes
You configure TimerFcn to execute a callback function file when a timer event occurs. A timer event occurs when the time specified by the TimerPeriod property passes. Timer events are only generated when the Status property is set to 'connected'. Timer events will stop being generated when the object's Status is set to 'disconnected', either by a disconnect function call, or when the server shuts down.
string, function handle, or cell array
The default value is an empty matrix ().