Siemens SIMATIC S7-300 CPU 317-2 PN/DP PLC – 6ES7317-2EK14-0AB0, 1 MB Work Memory

The Siemens SIMATIC S7-300 CPU 317-2 PN/DP (6ES7317-2EK14-0AB0) is a high-performance programmable logic controller (PLC) central processing unit designed for industrial automation, machine control, and process monitoring. It features 1 MB of integrated work memory, an MPI/PROFIBUS DP communication interface, and an Ethernet PROFINET interface with an integrated two-port switch.

This CPU executes PLC programs, processes automation logic, and communicates with compatible field devices, distributed I/O systems, and industrial networks. Its combination of PROFINET and PROFIBUS DP connectivity makes it suitable for automation installations that use both Ethernet-based and fieldbus-based communication.

The CPU operates on 24 V DC and requires a compatible Siemens Micro Memory Card (MMC) for program and load-memory storage. It supports engineering with Siemens STEP 7 software and is intended for compatible SIMATIC S7-300 installations.

Technical Specifications

Key Features

• 1 MB work memory: Supports PLC program execution and automation data processing.

• PROFINET Ethernet connectivity: Provides industrial Ethernet communication through an integrated two-port switch.

• MPI and PROFIBUS DP communication: Supports compatible programming devices, operator panels, and distributed I/O equipment.

• Integrated 24 V DC power supply: Designed for compatible S7-300 system installations.

• Micro Memory Card support: Provides the required load memory for PLC programs and data.

• Industrial network flexibility: Supports automation architectures combining PROFINET and PROFIBUS DP.

• Legacy system maintenance: Suitable for compatible existing S7-300 installations requiring repair or replacement.

Applications

• Factory and production-line automation

• Industrial machine control

• PROFINET-based automation networks

• PROFIBUS DP distributed I/O systems

• Manufacturing and packaging machinery

• Industrial process monitoring

• Maintenance and refurbishment of Siemens S7-300 systems

Compatibility and Installation Notes

Before ordering, verify the exact part number, hardware revision, rack configuration, connected I/O modules, network topology, Micro Memory Card requirements, and STEP 7 project compatibility. CPU replacement may require program transfer, hardware configuration checks, and recommissioning by a qualified automation technician.

Availability notice: Siemens lists this product as cancelled effective October 1, 2025, with spare-part support information available through Siemens. Stock may vary among specialist suppliers. Confirm whether the unit is new, refurbished, or used, and verify warranty and authenticity before purchase.