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Siemens 6ES7318-3FL01-0AB0 S7-300 CPU 318F-2 DP

Siemens 6ES7318-3FL01-0AB0 S7-300 CPU 318F-2 DP

Item NO.: 3746443
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Detail

  • Product NameSiemens 6ES7318-3FL01-0AB0 S7-300 CPU 318F-2 DP
  • Item NO.3746443
  • Weight1.0000 kg = 2.2046 lb = 35.2740 oz
  • CategoryPLC
  • BrandSiemens
  • Creation Time2026-08-25
  • S7-300 CPU 318F-2 DP
6ES7318-3FL01-0AB0 | S7-300 CPU 318F-2 DP · Official Technical Data

6ES7318-3FL01-0AB0

S7-300 CPU 318F-2 DP · Fail-Safe CPU
2 MB work memory 0.01 µs bit performance PROFIBUS DP interface PROFIsafe communication Firmware V3.3
Lifecycle Status: Phase-out (Active for spare parts)
Product Profile

6ES7318-3FL01-0AB0 is a Siemens S7-300 Fail-Safe CPU 318F-2 DP, the most powerful fail-safe CPU of the S7-300 family. It features 2 MB work memory, ultra-fast processing speed (0.01 µs for bit operations), a PROFIBUS DP interface, and PROFIsafe communication capability. Designed for extremely demanding safety-related automation applications up to SIL 3 (IEC 61508) and PL e (ISO 13849-1) requiring maximum performance, extensive I/O, and complex control algorithms.

Requires MMC · Order number 6ES7318-3FL01-0AB0

Technical Data

Performance & Memory

  • Work memory: 2 MB (integrated, not expandable)
  • Load memory: MMC up to 8 MB
  • Bit operation performance: 0.01 µs
  • Word operation performance: 0.02 µs
  • Floating point arithmetic: 0.09 µs
  • Number of blocks: Up to 4096 DBs, FCs, FBs, with max. 64 KB each

Interfaces & Communication

  • Interfaces: PROFIBUS DP (RS485) + MPI
  • Communication: PG/OP, S7 communication, open IE via CP
  • Safety communication: PROFIsafe via PROFIBUS DP
  • Safety integrity level: SIL 3 (IEC 61508), PL e (ISO 13849-1)
  • I/O address area (max): 8192 digital inputs / 8192 digital outputs
  • Expansion: max. 4 racks, up to 8 modules per rack
  • Protection class: IP20, ambient temperature 0°C ~ 60°C
  • Power loss: 6.5 W typical
IEC 61131-3 compliant · Highest performance in S7-300 F-family · PROFIsafe over PROFIBUS DP
System Role

The CPU 318F-2 DP serves as the flagship fail-safe controller in the S7-300 system, designed for:

  • Central safety controller for large-scale safety-related automation systems
  • High-performance safety master in PROFIBUS DP networks with PROFIsafe
  • Complex safety algorithm execution for advanced safety applications
  • Distributed safety intelligence backbone in multi-CPU systems
  • Legacy safety system upgrade for older S7-300 F-CPUs requiring higher performance
Compatibility

Drop-in Replacements

  • Predecessor: 6ES7318-3FL00-0AB0 (1.5 MB work memory)
  • Successor: 6ES7318-3FL01-0AB0 (current version, 2 MB)
  • Compatible with: All S7-300 I/O modules, racks, and power supplies
  • PROFIBUS DP: Compatible with all DP slaves, including safety-rated ET 200 series
  • Programming software: STEP 7 V5.5 or higher, requires F-license for safety programming
  • MMC: Requires MMC for load memory

Long-term Migration (S7-1500F)

Recommended S7-1500F replacement: 6ES7518-4FP00-0AB0 (CPU 1518F-4 PN/DP)

Migration requirements:

  • • Program must be ported to TIA Portal
  • • Hardware modules replaced with S7-1500 compatible components
  • • Safety program must be re-validated
  • • Not a plug-and-play replacement across platform boundaries
  • • Full hardware and software re-engineering required
Applications
  • Large-scale safety-related machine control (packaging, filling, automotive)
  • Process automation with safety requirements and high I/O demands
  • Emergency stop systems, light curtains, safety door monitoring
  • High-speed safety motion monitoring and positioning
  • Complex safety logic and interlocking systems
  • Replacement for older S7-300 F-CPUs (e.g., 318F-2 DP earlier versions)
  • Advanced manufacturing and production lines with safety requirements
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SR2 E201BD KFD2-SR2-EX1.W.LB
ICP22I0350000 ABL8 RPS24030
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Frequently Asked Questions
Is 6ES7318-3FL01-0AB0 discontinued? What is its availability?
The SIMATIC S7-300 system family was generally available until 2023. Following the phase-out declaration, products are available as spare parts for approximately ten more years. This CPU is expected to remain available through at least 2035+ as a spare part.
What is the difference between 6ES7318-3FL00-0AB0 and 6ES7318-3FL01-0AB0?
The main difference is the work memory size: the 3FL00 version has 1.5 MB, while the 3FL01 version has 2 MB. The 3FL01 also includes minor firmware improvements and better compatibility with newer MMC cards.
What safety standards does this CPU support?
The CPU supports safety functions up to SIL 3 (IEC 61508) and PL e (ISO 13849-1). It communicates via PROFIsafe over PROFIBUS DP with safety-rated I/O modules.
What is the long-term migration path to S7-1500F?
The recommended S7-1500F replacement is 6ES7518-4FP00-0AB0 (CPU 1518F-4 PN/DP). This is not a plug-and-play replacement; full hardware and software re-engineering is required, including program porting to TIA Portal and safety program re-validation.
Which programming software is supported? Do I need special licenses?
Requires STEP 7 V5.5 or higher, plus the Distributed Safety or F-Configuration Pack for safety programming. The F-runtime license is required on the CPU. With appropriate HSP files, earlier versions down to V5.4 SP4 may work.
What is the maximum number of I/O points this CPU can handle?
The CPU 318F-2 DP supports up to 8192 digital inputs and 8192 digital outputs, making it the highest-capacity fail-safe CPU in the S7-300 family.

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