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2-4 WEEKS LEAD TIME
24
24 MONTH REPAIR WARRANTY
ISO CERTIFIED QUALITY
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.


Product Description
Is your Siemens SIMATIC S7 PLC (e.g., S7-300, S7-400, S7-1200, S7-1500) displaying a CPU error or system fault (SF LED)? This indicates a problem that can stop your machinery. ROC Industrial offers expert repair services for Siemens SIMATIC S7 CPU errors, diagnosing hardware faults and restoring your controller's functionality.
Technical specifications
A CPU error or System Fault (SF) on a Siemens SIMATIC S7 PLC (e.g., S7-300 CPU 315-2DP, S7-1500 CPU 1516-3 PN/DP) signifies an internal malfunction. This can be due to hardware issues like faulty memory (RAM/load memory), processor core failure, defective backplane communication ASICs, or power supply irregularities within the CPU module. Our diagnostic approach uses Siemens TIA Portal or STEP 7 to analyze the diagnostic buffer, identify specific fault codes (e.g., related to OB86, OB122), and perform targeted component-level repair on the S7 CPU module.
Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.

Ships from Rochester, NY