Method and system for simulating a control program

A method for simulating a program, the program being modeled as a plurality of blocks in a block diagram, the block diagram comprising at least one signal emitted by one of the blocks and at least one parameter that influences a value of the signal, the block diagram being executed in a technical computing environment, the technical computing environment comprising a model editor and a simulation environment, the method being executed by at least one processor of a host computer, the method comprising:

• opening the block diagram in the model editor;
• simulating the block diagram for a first time span in the simulation environment, comprising periodically executing at least some of the blocks and periodically logging a current value of the signal;
• displaying the values of the signal as a function of the simulation time;
• receiving a pause command at a specific simulation time;
• receiving a new value for the at least one parameter;
• simulating the block diagram for a second time span in the simulation environment, comprising periodically executing at least some of the blocks and periodically logging a current value of the signal;
• and
• displaying both the values of the signal from the first time span and the values of the signal from the second time span, wherein the values from the second time span are displayed graphically different from those of the first time span.