Good morning! We recently encountered a communication issue with a 1756-L62 processor in our second episode within a span of four weeks. Despite changing the Power Supply, Backplane, and other components, the problem persisted. Rockwell provided Technical Note ID 41204, which highlighted a noise issue in 1756 modules manufactured between September 2006 and June 2007. The note mentioned a potential failure in modules with an ATMEL stamped on the ASIC component. In case of failure, specific slots display faults, while others remain unaffected. RS Linx only detects the Processor and 1756-ENBT module. Have you encountered a similar situation before? Any assistance would be greatly appreciated. Thank you.
What is the correct power supply size for part number L62? There seems to be a discrepancy as the initial statement refers to L62, while later on, L61 is mentioned.
Apologies, but I can only offer the 1756-L62 Power Supply alongside the 1756-PB72.
To increase computer performance and troubleshoot issues, try removing all modules except the CPU and reinstalling them one by one. This step-by-step method can help identify any faulty modules causing system errors. By carefully testing each module individually, you can ensure optimal hardware functionality.
Why is it important to continue this process? It seems like we're caught in a cycle of repeating the same actions over and over again - a classic case of insanity, right? LOL.
A few weeks ago, there was a discussion about similar issues involving a 1756-L6x SERCOS module and all other modules showing faults. Upon reviewing Cydog's post history, it seems like the current situation is just a coincidence. The question of "why do I have to keep troubleshooting" may seem rhetorical, but it's essential to continue troubleshooting until the problem is identified and resolved. Using a basic process of elimination can help pinpoint the issue. If the CPU and backplane are ruled out, and the problem has not occurred in a decade, it's likely the 1756 SERCOS module causing the malfunction. These modules have a more advanced backplane interface compared to I/O modules, and a malfunction in the backplane chip can disrupt communication with other modules and the CPU or Ethernet.
I've actually encountered a similar issue in the past with a 1756-L62 processor. Beyond what you've already done with changing supplies and backplane, I remember we also needed to replace the ASIC component that had an ATMEL stamp too. It seemed like an isolated manufacturing defect and since we've replaced that particular component, we haven't really had any more issues. Also make sure to update your firmware, it could help with the RS Linx detection issue you're having. Hope that helps and good luck!
Hey there, I have indeed come across a similar issue before. In our case, one slot was consistently faulting while others were operating as expected. We too had gone through replacing components before finding out that the issue was stemming from a defective ASIC component in the about the same manufacture period you mentioned. Once we replaced that part, things started running smoothly again. I recommend focusing on the ASIC component of the 1756 modules–you're likely to see some improvement once that's sorted out. Best of luck!
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Answer: Answer: Communication problems with the 1756-L62 processor could be due to a noise issue in modules manufactured between September 2006 and June 2007, as highlighted in Technical Note ID 41204.
Answer: Answer: Modules with an ATMEL stamped on the ASIC component may be prone to failure, as mentioned in the technical note. Specific slots may display faults while others remain unaffected.
Answer: Answer: RS Linx may only detect specific components due to communication issues related to the 1756-L62 processor and the affected modules.
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