Fundamental memory block

• S	R	Q
  0	0	hold	hold	store
  1	0	1	0	set
  0	1	0	1	reset
  1	1	0	0	forbidden

Implementation A in Simulink

• 
• works with delay due to Memory block

Better implementation B

• 
• works without delay

Implementation in Modelica

• block Pre replaces block Memory
• both implementations can be reproduced
• both work without delay!