Siemens 6ES7416-2XK04-0AB0 S7-400 PLC CPU Module

Siemens 6ES7416-2XK04-0AB0 is a SIMATIC S7-400 CPU 416-2 central processing unit designed for dual-network operation, featuring a first MPI/DP interface (12 Mbit/s) and a second PROFIBUS DP interface for field devices. It provides 2.8 MB of working memory (1.4 MB code, 1.4 MB data) and is listed as a replacement part for S7-400 installations, with firmware options including V4.0 and V7.0. Power is supplied via the backplane 5 V DC bus, with typical current draw around 1 A and up to 1.2 A, and power loss rated near 4.5 W; the module supports isochronous mode on PROFIBUS. Programming and engineering are conducted with STEP 7, versions V5.2 SP1 HF3 or higher, or V5.4 or higher with hardware service pack 261. The CPU 416-2 designation places this module in the mid-range of the S7-400 family, suitable for automation tasks that require reliable dual-network communication and a compact on-board memory for code and data. This replacement CPU is designed to integrate with existing MPI/DP and PROFIBUS DP networks, enabling seamless upgrade paths in legacy Siemens automation setups.