Siemens SIMATIC S7-300 CPU 315F-2 PN/DP Central Processing Unit, 384 KB Work Memory, PROFINET, MPI/DP, 6ES73156FF040AB0

In complex automation environments, a reliable and safe central processing unit is essential to coordinate distributed I/O and ensure fail-safe operation. The Siemens SIMATIC S7-300 CPU 315F-2 PN/DP addresses this need by combining high processing power with integrated safety functions and versatile communication interfaces.

Who is it for

This CPU is intended for automation engineers and system integrators who require a compact, high-performance controller for medium to large-scale applications, especially where functional safety (F-Systems) is a requirement. It suits machinery, process control, and factory automation tasks.

Main features

• 384 KB work memory for program and data
• Integrated PROFINET interface with 2-port switch for line or star topologies
• MPI/DP interface supporting up to 12 Mbit/s for distributed I/O and HMI connectivity
• Supports programming languages LAD, FBD, STL, SCL, and GRAPH
• Fast processing: bit operations in 0.05 µs, word operations in 0.09 µs, floating point in 0.45 µs
• Integrated PROFINET IO controller for up to 128 devices
• Requires Micro Memory Card (MMC) for operation
• Mounts on standard S7-300 rail

Specifications

• Product type: CPU module
• Series: SIMATIC S7-300
• Work memory: 384 KB
• Interface 1: MPI/DP, 12 Mbit/s
• Interface 2: PROFINET, 2-port switch
• Integrated DP master: 1
• Integrated PROFINET IO controller: 1
• Max PROFINET IO devices: 128
• Power consumption from backplane bus: 1.2 A at 5 V DC
• Supply voltage: 24 V DC via backplane bus
• Operating temperature: 0 to 60 °C
• Mounting: S7-300 mounting rail

Tips

Ensure the Micro Memory Card is inserted before powering up, as the CPU cannot operate without it. For safety-related applications, use the integrated F-technology and configure with STEP 7 Safety.