TimerFcn, startFcn and StopFcn arguments of the timer class expect Character vector, string scalar, function handle, or cell array defining the timer callback function. You must define this property before you can start the timer.
As you are trying to execute the “system” command.
t = timer;
t.TimerFcn = @(~,~)system('C:\Esotec\DFDC_070es33_win32\bin\dfdc.exe < DFDC_script.txt');
t.StopFcn = @(~,~)system('kill ');
t.Period =2;
t.TasksToExecute=1;
t.ExecutionMode='fixedRate';
start(t);
For further reference on timer object: Timer Object
For more information on how to call custom callback function’s : Timer Callback Functions
