Increasing interdependencies between power and ICT systems amplifies the possibility of cascading failures. Resilience against such failures is an essential property of modern and sustainable energy systems and networks. However, resilience assessment of these systems is complicated by the involvement of multiple subsystems such as the power and ICT systems. To assess the performance of such systems in the face of disturbances, the interconnection between interdependent subsystems requires adequate modeling. Using such models, impacts of various parameters on the interconnection and neighbouring subsystems can be assessed. This work presents an approach to model and determine the state of a so-called interconnector in future cyber-physical energy systems with strongly coupled ICT and power systems for a resilience analysis. A hierarchical modeling approach is developed with atomic models to demonstrate the interdependencies between subsystems. The modeling approach using stochastic activity nets is applied to an example of a redispatch process in cyber physical energy systems and is analysed for the performance of an interconnector when facing limited performance from the ICT subsystem and its subsequent impact on the power system. The state of the interconnector is mapped to the resilience state diagram, which illustrates its operational state and service level to analyse its resilience.