This paper presents a research of the determinacy of the timed concurrent system and the condition of convergence.
Time signals of linked concurrent components are used to represent real-time system. Super dense time(SDT) is used
to represent the modeling of mixed signals tag. The component are defined by the poset function of time model and
are composed by the poset function using feedback. Based on the fixed point theorem and generalized ultrametrics, the
convergence of causal components is analyzed and the uniqueness of the system response is proved.