Applications for a second PROFINET interface are as follows:

• 2 separate networks (e.g. one local and one higher-level network)
• Address space can be doubled to 2 ? 6 KB
• Maximum number of connectable devices can be doubled to 2 ? 64
• Separation into a fast and a slow bus system/execution system in order to make efficient use of the controller's capacity (applies only to SIMOTION D435-2 DP/PN, D445-2 DP/PN and D455-2 DP/PN)