Siemens 6ES7 318-2AJ00-0AB0 CPU Module – Obsolete SIMATIC S7-300 Spare Part

Technical Dossier

Product Details And Specifications

Siemens 6ES7 318-2AJ00-0AB0 CPU Module – Obsolete SIMATIC S7-300 Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Solving the Discontinued Hardware Crisis

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Condition & Reliability Assurance

Every 6ES7 318-2AJ00-0AB0 unit processed by DriveKNMS passes a structured 5-step inspection protocol before it is offered for sale:

• Step 1 – Electrolytic Capacitor Assessment: Aging electrolytic capacitors are the primary failure mode in legacy CPU boards. Each board is inspected for capacitor bulging, leakage, and ESR deviation. Units with degraded capacitors are either recapped or rejected.
• Step 2 – Firmware Version Verification: The installed firmware version is recorded and cross-referenced against known compatibility matrices for S7-300 distributed I/O configurations. Mismatched firmware versions are flagged before dispatch review.
• Step 3 – Pin and Connector Corrosion Inspection: Backplane connector pins are examined under magnification for oxidation, mechanical deformation, and contamination. Affected contacts are cleaned or the unit is downgraded.
• Step 4 – Functional Power-On Test: Units are powered and cycled through a diagnostic routine to confirm CPU initialization, memory integrity, and communication port response.
• Step 5 – Packaging and ESD Protection: Cleared units are sealed in anti-static packaging with desiccant and shipped in rigid protective cartons to prevent transit damage.

Key Features for System Maintenance

• Drop-in replacement: The 6ES7 318-2AJ00-0AB0 installs directly into any S7-300 standard rail slot without mechanical modification.
• No reprogramming required: Existing STEP 7 programs load directly from the memory card. There is no need to re-engineer ladder logic or reconfigure PROFIBUS network parameters.
• Avoids engineering reconstruction costs: Replacing a failed CPU with an identical unit eliminates the engineering hours, system revalidation, and production qualification runs that a platform migration would require.
• Preserves existing HMI and SCADA integration: MPI and PROFIBUS-DP addresses remain unchanged, keeping WinCC, iFIX, or third-party SCADA connections intact.

Q: How is condition confirmed before quotation?
A: Available condition, photos, test records and documentation are checked according to the requested model and sourcing channel before a formal RFQ response.

Q: How do I know the unit is genuine and not counterfeit?
A: All units are sourced from verifiable industrial channels. Siemens holographic labels, date codes, and board markings are inspected as part of our intake process. We do not accept units with tampered or missing identification markings.

Q: Can you source other S7-300 components?
A: Yes. DriveKNMS specializes in the full SIMATIC S7-300 ecosystem, including SM, FM, CP, and IM modules. Contact us with your complete BOM for a consolidated quote.