Application planning
3.5 Failure scenarios
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
77
3.5.3
Specific failure scenarios with S7-1500R
3.5.3.1
Two cable interruptions in the PROFINET ring in S7-1500R > 1500 ms apart
Introduction
The following failure scenario describes the effects of two cable interruptions in the
PROFINET ring. In this failure scenario, the time between the two cable interruptions is
> 1500 ms.
Failure scenario
①
Primary CPU
②
Backup CPU
③
PROFINET ring → interrupted at two points
④
IO device ET 200MP
⑤
IO device ET 200SP
Figure 3-16 Two cable interruptions in the PROFINET ring (> 1500 ms apart)
Summary of Contents for Simatic S7-1500H
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