CPU 413-1 for S7-400 Racks
The Siemens 6ES7413-1XG02-0AB0 is a SIMATIC S7-400 CPU 413-1 central processing unit equipped with a multi-point MPI interface and 72 KB of working memory.
The 72 KB working memory is the CPU's program and data execution space — enough for medium-scale logic and data handling on a single S7-400 rack. The MPI interface provides the default multi-point connection for programming (via STEP 7) and for simple HMI or peer-to-peer links without a separate PROFIBUS or Ethernet module. If your application needs more memory or a PROFINET port, this CPU is not the right fit; the S7-400 family offers higher-end CPUs for those requirements.