The 6ES7416-2XL00-0AB0 is a SIMATIC S7-400 CPU 416-2 DP central processing unit from Siemens. It carries an MPI port and a PROFIBUS DP interface, with 1.6 MB of working memory. This CPU sits in the S7-400 rack — the high-end platform for mid-to-large automation systems. It's the brain for a line that coordinates multiple drives, conveyors, or process skids over PROFIBUS DP.
Key specs in plain language
The 1.6 MB working memory is the program and data storage for your logic and tags. For a mid-size S7-400 application — say, a packaging line with a few hundred I/O points and some PID loops — that's enough headroom. If you're pushing into multi-thousand-I/O territory, you'd want the 416-3 or 417. The dual interfaces — MPI and PROFIBUS DP — let you talk to the CPU for programming (MPI) while it runs the fieldbus network (DP). That's a standard split on S7-400 CPUs; the DP port handles drives, remote I/O, and other slaves at up to 12 Mbps.