The IM 151-7 CPU can be used for distributed automation solutions of average program scope. It supports distributed preprocessing of the process data locally, and communication with the master control as PROFIBUS DP slaves. This results in the following advantages:

• Reduced load on the central controller
• Short response times to critical onsite signals
• Relief of bus system due to smaller data volumes
• Faster commissioning due to pretested units and parallel startups
• Increased availability and flexibility through autonomous machine units
• Clear configuring

In the event of failure of the DP master, the IM 151-7 CPU continues to operate autonomously.

The fine-modular design of the ET 200S I/O system, together with the IM151-7 CPU, allows a function-oriented structure of the station with all the advantages of an intelligent slave.