Discrete systems can be presented and modeled in many ways, one of which is as state-space matrices. This makes it easy to combine them with continuous time models in the same simulation. I suggest looking up the concept of state-space modeling.

Continuous and discreet subsystems can be interconnected by next block: ZoH (Zero-order-Hold, discrete to continuous).

More information you can find on datasheet page: https://www.mathworks.com/help/control/ug/continuous-discrete-conversion-methods.html

You can try to use the Rate Transition block (Simulink Library) in order to connect continuous time model to discrete time model.

Thank you but in my simscape simulation i have used a discrete powergui which simulates all model on discrete time sample. I want some continious subsystem block to run on continious time