Siemens SIMATIC S7-300 CPU 317F-2 DP Fail-Safe PLC – 6ES7317-6FF04-0AB0

The Siemens SIMATIC S7-300 CPU 317F-2 DP (6ES7317-6FF04-0AB0) is a fail-safe programmable logic controller designed for demanding industrial automation and safety-related applications. It combines standard control capabilities with safety programming support for compatible SIMATIC S7-300 systems.

Featuring 1.5 MB of integrated work memory, an MPI/PROFIBUS DP interface, and a second PROFIBUS DP interface supporting master/slave operation, this CPU is suitable for distributed automation systems with demanding control requirements. Siemens identifies applications including personnel and machine safety and burner control.

The CPU requires a Siemens Micro Memory Card (MMC) and is designed for use with compatible STEP 7 engineering software and the S7 Distributed Safety software package.

Technical Specifications

• Brand: Siemens

• Product Family: SIMATIC S7-300

• Product Type: CPU 317F-2 DP Fail-Safe CPU

• Part Number: 6ES7317-6FF04-0AB0

• Integrated Work Memory: 1.5 MB (1,536 KB)

• First Communication Interface: MPI/PROFIBUS DP, up to 12 Mbps

• Second Communication Interface: PROFIBUS DP master/slave

• Rated Supply Voltage: 24 V DC

• Permissible Supply Voltage: 19.2–28.8 V DC

• Rated Current Consumption: 870 mA

• Typical No-Load Current: 120 mA

• Typical Power Loss: 4.5 W

• Firmware Version: V3.3

• Hardware Functional Status: 01

• Dimensions: Approximately 40 × 125 × 130 mm

• Memory Card: Siemens Micro Memory Card (MMC) required

• Maximum MMC Capacity: 8 MB

• Engineering Software: STEP 7 V5.5 SP1 or later, or compatible STEP 7 version with HSP 202 and S7 Distributed Safety

• Product Lifecycle: Phase-out announced; spare-part availability may vary

Key Features

• Fail-safe CPU for compatible industrial safety applications.

• 1.5 MB of integrated work memory.

• MPI/PROFIBUS DP communication on the first interface.

• Second PROFIBUS DP interface supporting master/slave operation.

• Supports standard and safety-related automation programs.

• Suitable for distributed automation architectures.

• Designed for integration with compatible Siemens safety engineering software.

• Integrated 24 V DC power supply.

Typical Applications

• Industrial machine safety

• Personnel protection systems

• Burner control applications

• Manufacturing and production lines

• Distributed automation using PROFIBUS DP

• Safety-related control systems

• Maintenance and replacement of existing SIMATIC S7-300 installations

Compatibility and Installation

Before purchasing, verify the existing CPU configuration, PROFIBUS DP network, STEP 7 software version, S7 Distributed Safety compatibility, fail-safe I/O modules, and required Micro Memory Card. Safety functions must be engineered and validated according to applicable standards and Siemens documentation.

Availability Notice

Siemens lists this product under a phase-out lifecycle status, with phase-out effective October 1, 2023. Confirm current stock, product condition, warranty, and replacement compatibility with the supplier before ordering.