Simulink+PLECS - Queued Subsystems and Transfer of Initial State Problem (Signal 2 Variable)

Hello everyone,

I am using Matlab with Simulink and Plecs to simulate the behaviour of a electric decive.

I implemented the device as an electric circuit (in PLECS). This circuit is used in a first subsystem which shall be charged and in second subsystem which shall do other stuff.

The first subsystem shall generate initial states, such as initial voltage of a capacitor. The output of the first subsystem is in the form of a signal.

Once the first subsystem is finished, it shall trigger the second subsystem. This shall use the initial states (signals) for the capacitors (which use variables of model-workspace)

I have two problems:

1. The first subsystem has defined initial outputs, but still Matlab says I have an algebraic loop. Why is that? (The system is continous, the sample-rate is infinite)
2. How can I transform the signals which are generated by the first subsystem to variables (in model-workspace!) which can then be used by the second?

An outline of what I am doing can be seen here: https://www.dropbox.com/s/l6glcfxavvrh667/problem_subsystem.png

Thanks in advance,

Florian