With the Extended Simulation S5 it is possible to test your PLC programs. No additional hardware is required. The test will be entirely performed on your PC. The Extended Simulation S5 provides the functionality of a SIMATIC CPU 945.
The S7-Simulation-PLC executes a program in the same manner as a hardware PLC. The advantage of executing a PLC program this way is, that the PLC status can be displayed in real time without any recompile activities. Since the Soft PLC behaves like a original SIMATIC PLC, the programming tools S7 for Windows® and STEP7 can be used.