CPU 416-2 — 1.6 MB working memory, mature lifecycle
The 6ES7416-2XK02-0AB: The SIMATIC S7-400 CPU 416-2 carries 1.6 MB of working memory, enough to host medium-to-large control logic and data blocks in a single rack. Typical power loss is 7.5 W, which should be factored into the enclosure thermal budget alongside the power supply and I/O modules.
Sourcing and cross-reference
Because production has stopped, this CPU is sourced through independent distribution channels. The documented replacement, 6ES7416-2XN05-0AB0, is the recommended path for new builds or when a like-for-like swap is required.