Siemens 6ES7416-3XL00-0AB0 PLC CPU Module for SIMATIC S7-400

Siemens 6ES7416-3XL00-0AB0 is a SIMATIC S7-400 CPU 416-3 module that acts as the central processing unit for S7-400 racks, handling program execution, data processing, and diagnostics within industrial automation systems. It provides 3.2 MB of working memory, split into 1.6 MB for code and 1.6 MB for data, enabling storage of user programs, runtime variables, and block data without frequent paging. The CPU exposes three communication interfaces: MPI/DP at 12 Mbit/s for legacy fieldbus connectivity, PROFIBUS DP for high-speed networked device control, and a third interface dedicated to IFM connections, supporting flexible topologies and multi-module expansion in complex installations. As part of the S7-400 family, the 416-3 CPU is designed for reliable operation in factory environments, serving as the backbone for medium- to large-scale automation tasks within rack-based systems. The 6ES7416-3XL00-0AB0 variant clearly identifies the CPU 416-3 with 3.2 MB working memory and the three-interface configuration, making it a suitable choice for engineers needing a proven PLC core with broad communication options in Siemens' modular automation portfolio.