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maersk
Member 3
Joined: 17 Aug 2014
Posts: 891
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 Posted: 03/11/2016 15:28 Post subject: Retentive Storage of Safety-Related Values |
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Retentive Storage of Safety-Related Values
https://support.industry.siemens.com/cs/document/109738738/retentive-storage-of-safety-related-values
Using the offered program blocks, you can access to stored failsafe values, even after a restart of the F-CPU.
A coding procedure backing up the stored values was developed using the interaction between the safety program (F-program) and the standard user program. With this concept, the security function achieves, provided it is used in a fail-safe SIMATIC CPU, PL e as per ISO 13849-1 or SIL 3 as per IEC 62061.
The coding procedure is available as program code in the STEP 7 project offered.
https://support.industry.siemens.com/cs/attachments/109738738/109738738_F_Retain_DOC_V10_en.pdf
https://support.industry.siemens.com/cs/attachments/109738738/109738738_F_Retain_CODE_V10.zip
https://support.industry.siemens.com/cs/attachments/109738738/SN90061T.pdf |
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