What this CPU delivers in the rack
The 6ES7416-2FK02-0AB0 is a SIMATIC S7-400 CPU 416F-2 central processing unit carrying 1.6 MB of working memory split as 0.8 MB for code and 0.8 MB for data. It provides a primary MPI/DP interface running at 12 Mbit/s plus a second dedicated DP interface, and is applicable with the Distributed Safety V5.2 software package for fail-safe operation.
What the memory split means for your program
The 1.6 MB working memory is partitioned as 0.8 MB for code and 0.8 MB for data. That split matters when you're loading a safety application alongside standard logic — the fail-safe blocks and their associated data consume from both pools. If your existing S7-400 project fits within these boundaries, this CPU drops into the same rack with no memory upgrade needed.
Deployment context
This CPU mounts in a standard S7-400 rack (UR1 or UR2) and connects to the backplane via the P-bus. The two DP interfaces let it talk to ET 200 remote I/O and drives without an extra CP card, which saves a slot. The MPI port also handles programming downloads and HMI connections at 12 Mbit/s.