Siemens · S7-300 · PLC CPU

Siemens 6ES7 315-2AG10-0AB0

DiscontinuedMEDIUM

What should replace this part?

Your options

Our analysisSame-family 6ES7315-2AH14-0AB0 (verify)

Distributor-stated successor 6ES7315-2AH14-0AB0 keeps the S7-300 rack with firmware, HSP and MMC attention; OEM confirmation still pending.

Our analysisS7-1500 platform migration

S7-1500 is the stated family upgrade direction with full re-engineering: rail, PROFINET and TIA.

Our analysisSource used / new-original bridge

Distributor new-original stock channels exist for the exact MLFB.

Replacement analysis

Original: 6ES7 315-2AG10-0AB0 (CPU 315-2 DP S7-300)

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Replacement: 6ES7315-2AH14-0AB0

Relationship: Same-family replacement MEDIUM

Migration / engineering work required — not a drop-in. This is not presented as a drop-in replacement.

Analyst note: Successor MLFB via Tier C (ICDC); S7-1500 platform path general. Date: unit-level via distributor mirror.

What changes?

Firmware	Same-family path needs firmware and hardware support package attention plus MMC handling.
Software	STEP7 Classic applies to this CPU revision; S7-1500 path converts to TIA Portal.
Hardware	S7-1500 path needs a new rail and full re-engineering.
Communications	MPI and PROFIBUS DP give way to PROFINET on the platform path.

Anything not listed here is unknown — the evidence does not establish it.

Can I still buy the original?

Repair: Unknown — not verifiedUsed: Verified — see evidenceRefurbished: Unknown — not verified

New-original availability is not claimed unless evidence supports it. Availability is never implied by the existence of a listing alone.

Lifecycle

Status: Discontinued

Discontinuation date: 2022-10-01 (family P.M410 2025-10-01)

Lifecycle source

Evidence

Every important claim traces to a source below. OEM source means the manufacturer published it; third-party source means a distributor, repair company or reseller states it; our analysis connects them — and is labeled as such.

Third-party sources

Third-party source MEDIUM Patti Engineering (Siemens partner) · Tier B · 2025-10-10

S7-300 family P.M400 2023-10-01 / P.M410 2025-10-01; upgrade S7-1500

“SIMATIC S7-300 PLCs P.M400: Oct 1, 2023 P.M410: Oct 1, 2025 S7-1500”

Establishes: modern_platform_migration · View source · Note: Family-level; links to Siemens notices not individually opened

Third-party source LOW ICDC Spares · Tier C · 2026-09-10

Successor stated as 6ES7315-2AH14-0AB0 (discontinued no longer available)

“Discontinued product, it is no longer available. Successor: 6ES7315-2AH14-0AB0”

Establishes: same_family_replacement · View source · Note: Distributor successor claim; needs SIOS confirm for HIGH

Why you might be searching this

315-2DP fault; 2AH14 same-family or S7-1500, and what breaks each way?

Related replacement analyses

Siemens 6ES7 322-1BL00-0AA0 — Same family: S7-300

Need help deciding between repair, replacement, or migration?

Request a replacement review for 6ES7 315-2AG10-0AB0 — repair assessment, sourced original, replacement quote, or migration scoping.

Request a replacement review

Research status: done. Confidence MEDIUM reflects the evidence above, not marketing. Commercial paths: Used original probe · 2AH14 successor probe · S7-1500 scoping. No search-volume, pricing or revenue claims are made on this page.