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MTBF,MTTR and MTTF in S7-400H

8/31/2006 11:25 AM	Rate (0)
ShahinM Posts: 335 Rating: (3)	If I want to havethe MTBF, MTTR and MTTFof a complete S7-400H PLCwith different I/O modules and CPs,What should I do?
ShahinM Posts: 335 Rating: (3)
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8/31/2006 11:46 AM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 1/16/2026 Posts: 9105 Rating: (1204)	Hi, You can ask your Siemens representative. Just give them all used MLBF numbers (order numbers) and they will inform you. Best regards, Wizard

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8/31/2006 5:40 PM	Rate (0)
Denilson Pegaia Diamond Member Joined: 9/23/2005 Last visit: 1/16/2026 Posts: 4449 Rating: (1487)	Hi, look at http://support.automation.siemens.com/WW/view/en/16818490 for MTBF. In the "Automation System S7-400H Fault-tolerant Systems" manual ( http://support.automation.siemens.com/WW/view/en/1186523), chapter A, there is a "tomb roule" to MTBF's and how to calculate MTTR, etc.
	Denilson Pegaia Siemens Industry Sector Technical Support
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9/1/2006 12:06 AM	Rate (0)
Late Platinum Member Joined: 1/7/2006 Last visit: 5/11/2025 Posts: 2705 Rating: (321)	Hi, It is easy, there is a list with all MTBF numbers for free to download from the internet and if you know the time to repair, then you can calculate the MTTR and the MTTF.
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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11/17/2015 2:13 PM	Rate (0)
Min_Moderator Posts: 4757 Rating: (122)	New question published by Railman is split to a separate thread with the subject Link: MTBF for Step 7. Best regards Min_Moderator
Min_Moderator Posts: 4757 Rating: (122)
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