The SIMATIC S7-300 CPU317F-2 PNDP is a high-performance central processing unit designed for automation systems requiring precision and reliability. With a robust 1.5 MB work memory and support for single-phase systems, this CPU is ideal for complex industrial applications. It operates within an ambient temperature range of 0C to 60C and is built to withstand up to 95% humidity, ensuring consistent performance in challenging environments. Compact dimensions (40 x 125 x 130 mm) and a lightweight design of 340 grams make installation seamless in panel-mounted setups. Engineered with a 24V DC rated voltage and an input current of 750 mA, it delivers energy-efficient performance. The IP20 protection level provides solid resistance against dust ingress. Finished in matte grey, the CPU combines durability with a professional aesthetic, catering to various automation processes. With a frequency compatibility of 50/60 Hz and a power loss of 4.65 W, it achieves operational efficiency while maintaining reliability across numerous industrial tasks.

General Information

• Product Type: CPU 317F-2 PN/DP

• HW Version: 01

• Firmware: V3.2

• Isochronous Mode: Yes (via PROFIBUS or PROFINET)

• Programming Software: STEP 7 V5.5+, Distributed Safety V5.4 SP4

Power Supply

• Rated Voltage: 24 V DC

• Operating Range: 20.4–28.8 V DC

• Recommended Fuse: 2 A

• Power Failure Hold-Up: 5 ms

• Current Consumption:

  • Rated: 750 mA

  • No-load: 150 mA

  • Inrush: 4 A

• Power Loss: 4.65 W

Memory

• Work Memory: 1,536 kB

• Load Memory: MMC (up to 8 MB) required

• Backup: MMC (no battery needed)

Processing Times

• Bit Operations: 0.025 μs

• Word Operations: 0.03 μs

• Fixed Point: 0.04 μs

• Floating Point: 0.16 μs

Blocks

• Total Blocks: 2048 (DB/FB/FC)

• Max Block Size: 64 kB

• OB Support: OB1, OB10, OB20/21, OB32–35, OB40, OB55–57, OB61, OB80–87, OB100, OB121/122

Counters & Timers

• S7 Counters: 512

• S7 Timers: 512

• IEC Counters/Timers: Unlimited (RAM-dependent)

• Retentive Data Area: 256 kB

Address Areas

• Inputs: 8192 bytes

• Outputs: 8192 bytes

• Flags: 4096 bytes

• Process Image (Default): 256 bytes IN / 256 bytes OUT

• Process Image (Max): 8192 bytes IN / OUT

Digital / Analog Channels

• Digital Inputs: 0

• Digital Outputs: 0

• Analog Inputs: 0

Hardware Configuration

• Expansion Units: Max 3

• DP Masters: 1 integrated, 4 via CP

• Supported Modules:

  • FM: 8

  • CP PtP: 8

  • CP LAN: 10

• Racks: 4 max

• Modules per Rack: 8

Clock & Time

• Real-Time Clock: Yes

• Backup Time: 6 weeks

• Max Drift: 10 s/day

• Operating Hours Counter: 4

Interfaces

1. RS485 Interface (MPI/DP)

• Isolated: Yes

• Speed: Up to 12 Mbit/s

• Supports:

  • MPI

  • PROFIBUS DP Master/Slave

  • PG/OP Communication

  • Routing

  • Isochronous Mode (DP)

2. PROFINET Interface

• Ports: 2 (RJ45)

• Speed: 10/100 Mbit/s

• Functions:

  • IO Controller

  • IO Device

  • IRT

  • Web Server

  • Open IE (TCP/IP, UDP, ISO-on-TCP)

  • Media Redundancy

PROFINET IO Controller

• Max IO Devices: 128

• IRT Devices: 64

• Update Time: 250 μs to 512 ms

• Send Cycles: 250 μs to 4 ms

PROFINET IO Device

• Shared Device: Yes (up to 2 controllers)

• Max Data: 1440 bytes IN / 1440 bytes OUT

Communication

• PG/OP: Yes

• Routing: Yes

• S7 Basic Communication: Yes

• S7 Communication: Client & Server

• PROFIsafe: Yes

• Web Server: Yes

• TCP/UDP Connections: Up to 16

Diagnostic & Testing

• Diagnostic Buffer: 500 entries

• Breakpoints: 4

• Forcing: Yes

• Status Monitoring: Yes

Programming Languages

• LAD, FBD, STL, SCL, CFC, GRAPH, HiGraph

Protection

• Password Protection: Yes

• Block Encryption: Yes

Physical Data

• Width: 40 mm

• Height: 125 mm

• Depth: 130 mm

• Weight: 340 g

Technical Details 

FAQs of SIMATIC S7-300 CPU317F-2 PNDP, Central processing unit with 1.5 MB work memory: