It looks like you’re asking for the full story behind — but based on the phrasing, there are a few possibilities for what you mean.
Here’s a breakdown of the most likely interpretations: The most common technical reference to “V SFT” is V-SFT , a configuration software for Mitsubishi Electric and Beijer Electronics HMI (Human-Machine Interface) terminals, such as the E1000 , E1100 , MAC E series , and older GOT units. v sft software