Siemens 6ES7412-2EK06-0AB0 Central Processing Unit

High-Performance CPU for SIMATIC S7-400 Systems

The 6ES7412-2EK06-0AB0 central processing unit, also known as the CPU 412-2 PN, delivers robust processing power for medium-performance SIMATIC S7-400 applications . This module executes bit operations in just 75 ns and floating-point arithmetic in 225 ns . Consequently, this CPU suits manufacturing, energy management, and process automation tasks .

Technical Specifications

Memory and Processing Capabilities

The 6ES7412-2EK06-0AB0 integrates 1 MB of work memory split equally between program and data storage . This module supports up to 3,000 data blocks and 1,500 function blocks for complex automation logic . Furthermore, the CPU accommodates expandable load memory via flash or RAM memory cards . The real-time hardware clock maintains accurate timekeeping even during power interruptions.

Communication Interfaces and Network Integration

This CPU features two integrated interfaces for versatile connectivity. The first interface combines MPI and PROFIBUS DP, supporting transmission rates up to 12 Mbit/s . The second interface provides PROFINET with two RJ45 ports for Ethernet-based communication . Consequently, the 6ES7412-2EK06-0AB0 supports PG/OP communication, global data exchange, and S7 communication services . The integrated web server enables remote monitoring via standard browsers .

Physical Characteristics and Installation

This CPU module occupies one slot in the S7-400 rack and weighs approximately 0.75 kg . Its compact single-width design allows efficient use of rack space. The module requires a 24 V DC power supply from the system power supply . The front panel includes LED indicators for run, stop, and fault status for quick diagnostics.