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Siemens 6ES7315-2EH14-0AB0 Central Processing Unit

Siemens 6ES7315-2EH14-0AB0 Central Processing Unit

Item NO.: 3490275
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Detail

  • Product NameSiemens 6ES7315-2EH14-0AB0 Central Processing Unit
  • Item NO.3490275
  • Weight1.0000 kg = 2.2046 lb = 35.2740 oz
  • CategoryPLC
  • BrandSiemens
  • Creation Time2025-12-18
  • Siemens Central Processing Unit
  • S7-300 CPU 315-2 PN/DP
6ES7315-2EH14-0AB0 | S7-300 CPU 315-2 PN/DP · Official Technical Data

6ES7315-2EH14-0AB0

S7-300 CPU 315-2 PN/DP
Lifecycle Status: Phase-out (Active for spare parts)
Overview

6ES7315-2EH14-0AB0 is a Siemens S7-300 CPU 315-2 PN/DP with integrated PROFINET (2-port switch) and PROFIBUS DP interfaces. It features 384 KB work memory, high processing speed (0.05 µs for bit operations), and is designed for medium to large-scale automation applications requiring Ethernet connectivity and distributed I/O.

Firmware V3.2 · Order number 6ES7315-2EH14-0AB0 · Requires MMC

Technical Specifications

  • Work memory: 384 KB (integrated, not expandable)
  • Load memory: MMC up to 8 MB
  • Bit operation performance: 0.05 µs
  • Word operation performance: 0.09 µs
  • Floating point arithmetic: 0.45 µs
  • Interfaces: PROFINET (2x RJ45 switch) + PROFIBUS DP (RS485)
  • Communication: PG/OP, S7 communication, open IE (TCP/IP, UDP, ISO-on-TCP)
  • I/O address area (max): 1024 digital inputs / 1024 digital outputs (central)
  • Expansion: max. 4 racks, up to 8 modules per rack
  • Protection class: IP20, ambient temperature 0°C ~ 60°C
  • Power loss: 4.65 W typical
IEC 61131-3 compliant · Integrated isochronous mode support via PROFIBUS DP or PROFINET

Features

  • Integrated PROFINET IO controller with 2-port switch, supports RT/IRT
  • PROFIBUS DP master/slave for distributed I/O
  • Up to 1024 blocks (DBs, FCs, FBs) with max. 64 KB each
  • Supports SIMATIC memory card (MMC) for program/data backup
  • Web server, data logs, time synchronization
  • Online download/debug via PROFINET during operation
  • Diagnostic alarms, process alarms, interrupt handling
  • Supports software redundancy (with two CPUs and CP342-5)
  • Compatible with STEP 7 V5.5 or higher

Applications

  • Medium to large-scale machine control (packaging, filling, textile)
  • Process automation with high I/O demands
  • Distributed automation solutions (PROFINET + PROFIBUS)
  • Software redundancy applications
  • Replacement for older S7-300 CPUs (e.g., 315-2DP, 315-2PN/DP earlier versions)
  • Applications requiring PROFINET connectivity and central I/O expansion

Lifecycle

Lifecycle status: Phase-out product. SIMATIC S7-300 system families generally available until 2023, with spare parts support for approximately ten years thereafter.

Active for spare parts: Expected to remain available through at least 2035+.

Compatible successor (drop-in replacement): 6ES7315-2EH13-0AB0 (previous version). When replacing with 6ES7315-2EH14-0AB0, the STEP 7 project does not need to be changed. Use the previous type's order number in hardware configuration.

Long-term migration path (S7-1500): 6ES7515-2AM02-0AB0 (discontinued) → 6ES7515-2AN03-0AB0 (current S7-1500 replacement)

Migration requirements: Program must be ported to TIA Portal; hardware modules replaced with S7-1500 compatible components; not a plug-and-play replacement across platform boundaries. Full hardware and software re-engineering is required for S7-1500 migration.

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Frequently Asked Questions
Is 6ES7315-2EH14-0AB0 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 compatible drop-in replacement for this CPU?
The previous version is 6ES7315-2EH13-0AB0. When replacing with 6ES7315-2EH14-0AB0, the STEP 7 project does not need to be changed. You can configure the previous type's order number in hardware configuration.
What is the long-term migration path to S7-1500?
The recommended S7-1500 replacement path is: 6ES7515-2AM02-0AB0 (discontinued) → 6ES7515-2AN03-0AB0 (current). This is not a plug-and-play replacement; full hardware and software re-engineering is required, including program porting to TIA Portal and new hardware installation.
Which programming software is supported?
Requires STEP 7 V5.5 or higher. With appropriate HSP files, earlier versions down to V5.4 SP4 may work. The CPU cannot be operated with versions below V5.4 SP4.
Can this CPU be used for software redundancy?
Yes, the 6ES7315-2EH14-0AB0 can be used for software redundancy applications. Two CPUs and CP342-5 communication processors are typically used for this purpose.

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