Single-step through a VI to view each action of the VI on the block diagram as the VI runs. The single-stepping buttons affect execution only in a VI or subVI in single-step mode. You can single-step through subVIs or run them normally.
Complete the following steps to single-step through a VI.
Step IntoOpens a node and pauses. When you click the Step Into button again, it executes the first action and pauses at the next action of the subVI or structure. You also can press the <Ctrl> key and the down arrow key.
Step OverExecutes a node and pauses at the next node. You also can press the <Ctrl> key and the right arrow key.
Step OutFinishes executing the current node and pauses. When the VI finishes executing, the Step Out button becomes dimmed. You also can press the <Ctrl> key and the up arrow key.