
Application planning
3.5 Failure scenarios
S7-1500R/H redundant system
86
System Manual, 10/2018, A5E41814787-AA
3.5.4.2
Failure of one redundancy connection and the primary CPU in S7-1500H
Introduction
The following failure scenario describes the effects of a defect in a redundancy connection
and the primary CPU in S7-1500H. In this failure scenario, the time between the redundancy
connection failure and the Primary CPU is > 1500 ms.
Failure scenario
①
Primary CPU → failed (2nd failure in runtime sequence)
②
Backup CPU
③
One fiber-
optic cable (redundancy connection) → interrupted (1st failure in runtime sequence)
④
IO device ET 200SP
⑤
IO device ET 200MP
⑥
PROFINET cable (PROFINET ring)
Figure 3-20 Failure of one redundancy connection and the primary CPU
Содержание Simatic S7-1500H
Страница 1: ......