Siemens 6ES7412-2EK07-0AB0 SIMATIC S7-400 CPU 412-2 PN 1MB MPI/DP PROFINET Programmable Logic Controller

The Siemens 6ES7412-2EK07-0AB0 is a SIMATIC S7-400 CPU 412-2 PN central processing unit with 1 MB of work memory split 512 KB program / 512 KB data, and two interfaces: a 12 Mbit/s MPI/DP port and an Ethernet/PROFINET port. It supports up to 21 expansion units and multicomputing with up to 4 CPUs in one UR1 or UR2 rack.

Technical Specifications

Certifications & Standards

• CE
• CSA
• UL
• cULus
• FM
• RCM
• KC
• EAC

Selection Notes

The -2 PN designation adds an integrated Ethernet/PROFINET port alongside the MPI/DP interface, so PROFINET IO devices connect directly to the CPU without a separate CP 443-1 module — choose this over a DP-only 412 CPU when the plant network is PROFINET-based. Multicomputing support for up to 4 CPUs in one UR1/UR2 rack lets a program split across CPUs when a single 1 MB work memory (512 KB program / 512 KB data) is not enough for the application; for programs that fit in one CPU, the simpler single-CPU rack layout is sufficient.

Applications

Suited to S7-400 rack-based process and machine control retrofits that need PROFINET IO connectivity without re-architecting an existing MPI/DP installation, and to multicomputing configurations that distribute a large control program across several CPUs sharing one backplane.