About

Communication Protocols Profibus Mounting Type DIN Rail Output Type Digital Manufacturer Series S7 300 SIMATIC S7-300, CPU 315F-2DP Fail-safe module with MPI Integr. power supply 24 V DC, Work memory 384 KB, 40 mm width, 2nd interface DP master/slave Micro Memory Card required

Siemens SIMATIC S7-300 – CPU 315F-2 DP

Product Type: CPU 315F-2 DP
Fail-Safe Module with MPI
Integrated Power Supply: 24 V DC
Work Memory: 384 KB
Width: 40 mm
2nd Interface: DP Master/Slave
Micro Memory Card (MMC): Required

General Information

• HW Functional Status: 01

• Firmware Version: V3.3

• Product Function: Isochronous Mode

• Engineering Software: STEP 7 V5.5 + SP1 or V5.2 + SP1 with HSP 218 + Distributed Safety

Supply & Power

• Rated Voltage: 24 V DC (range 19.2–28.8 V)

• External Protection (recommended): 2 A

• Mains/Voltage Failure Stored Energy: 5 ms

• Current Consumption: 850 mA (rated), 150 mA (no-load)

• Inrush Current: 3.5 A

• Power Loss (typical): 4.5 W

Memory

• Work Memory: 384 KB (not expandable)

• Load Memory (MMC): Max 8 MB

• Backup: Maintenance-free via MMC

• CPU Processing Times:

  • Bit operations: 0.05 μs

  • Word operations: 0.09 μs

  • Fixed-point: 0.12 μs

  • Floating-point: 0.45 μs

CPU Blocks

• Total Blocks: 1,024 (DBs, FCs, FBs)

• Max DB Size: 64 KB

• Max FB/FC Size: 64 KB

• OBs: Sizes up to 64 KB, free cycle OB 1, time alarm OB 1, cyclic interrupts 4, process alarm OB 1, etc.

• Nesting Depth: 16 per priority class

Counters & Timers

• S7 Counters: 256, adjustable retentivity

• IEC Counters: Unlimited (limited by RAM)

• S7 Timers: 256, adjustable

• IEC Timers: Unlimited (limited by RAM)

• Retentive Data Area: 128 KB

Flags & Data Blocks

• Flags: Max 2,048 bytes, retentive MB 0–2,047

• Clock Memories: 8 bits

• Local Data per Priority Class: Max 32 KB, 2 KB per block

• Retentive DBs: Adjustable and preset

I/O Address Area

• Inputs/Outputs: 2,048 bytes each

• Distributed Inputs/Outputs: 2,048 bytes

• Process Image: 2,048 bytes (inputs & outputs)

• Digital Channels: Inputs/Outputs 16,384 (central 1,024)

• Analog Channels: Inputs/Outputs 1,024 (central 256)

Hardware Configuration

• Max Expansion Units: 3

• DP Masters: 1 integrated, 4 via CP

• Operable FMs/CPs Recommended: FM 8, CP PtP 8, CP LAN 10

• Racks: Max 4, Modules per rack: 8

Clock

• Hardware Clock: Yes, retentive & synchronizable

• Backup Time: 6 weeks at 40 °C

• Deviation per Day: Max 10 s (typical 2 s)

• Operating Hours Counter: 0–2³¹ hours, retentive

Interfaces

• RS-485: 2 (MPI & PROFIBUS DP)

• Transmission Rates: MPI max 187.5 kbit/s, DP max 12 Mbit/s

• PROFINET Interfaces: None

• सेवाएं: PG/OP communication, Routing, S7 basic & S7 communication, DPV1, PROFIsafe

Communication

• Number of Connections: 16 overall

• PG Communication: 15 usable

• OP Communication: 15 usable

• S7 Basic Communication: 12 usable

• S7 Message Functions: Max 16 login stations

• Process Diagnostic Messages: Max 300 simultaneously

Programming

• Languages: LAD, FBD, STL, SCL, CFC, GRAPH, HiGraph®

• Know-how Protection: User program/password protection, Block encryption

• Nesting Levels: 8

Status & Diagnostics

• Status/Control Variables: Yes, max 30

• Forcing Variables: Inputs/Outputs, max 10

• Diagnostic Buffer: 500 entries (100 powerfail-proof)

• Service Data: Can be read out

Ambient Conditions

• Operating Temperature: 0–60 °C

• Configuration Software: STEP 7 V5.2 SP1 or higher

Dimensions & Weight

• Width: 40 mm

• Height: 125 mm

• Depth: 130 mm

• Weight: ~290 g 

Technical Details