Failure Of Both Redundancy Connections And The Profinet Cable In The Profinet Ring - Siemens SIMATIC S7-1500 System Manual

Application planning
5.4 Redundancy scenarios
Diagnostics
System state, operating states and error displays after the failure of both redundancy
connections:
• Redundant system → RUN-Solo system state
• Primary CPU → RUN operating state
– MAINT LED → yellow light: The H-system is not in the RUN-Redundant system state. No
• Backup CPU → STOP operating state
– MAINT LED → yellow light: The H-system is not in the RUN-Redundant system state. No
NOTE
To get detailed diagnostics information, evaluate the diagnostics buffer.
Solution
Replace the defective redundancy connections. You can find additional information on the
procedure in the section Replacing defective redundancy connections (Page 322).
5.4.5.3 Failure of both redundancy connections and the PROFINET cable in the PROFINET
ring
Introduction
The following redundancy scenario describes the effects of a defect in each of the two
redundancy connections and in the PROFINET cable in the PROFINET ring.
In this redundancy scenario, the time between the redundancy connection failures is
> 55 ms.
112
partner CPU has been found in the H-system.
partner CPU has been found in the H-system.
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD