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Handout 8
Restricted© SiemensAG 2013 All rights reserved.
Page 16
InstMC Functional Safety 2016Conference
But what if there are still bugs?
Restricted© SiemensAG 2013 All rights reserved.
Page 17
InstMC Functional Safety 2016Conference
Examples of Techniques and Measures employed
CPU
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Separation
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Access Protection CPU,
Application Program.
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Read-only Safety mode
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Program Sequence Monitoring
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Diverse Data Structures
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Data Signatures
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Diverse Code Execution
I/O
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Dual microprocessors
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Safety diagnostics
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Line monitoring capability
Communications
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PROFISafe safety communications
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Checks applied to both ends
“Safety Islands”