Siemens Simatic S7-1500H - Replacing Defective Redundancy Connections; Replacing Two Defective PROFINET Cables with S7-1500 R

13.1.3 Replacing defective redundancy connections
Introduction
This section describes the following replacement scenarios:
S7-1500R:
•
Replace defective PROFINET cable with S7-1500R.
The PROFINET ring has been interrupted at any given point. You can find additional
information in the section Replacing defective PROFINET cables (Page 326).
•
Replace two defective PROFINET cables with S7-1500R.
The PROFINET ring has been interrupted at two points.
S7-1500H:
•
Replace a defective redundancy connection with S7-1500H.
A fiber-optic cable has been interrupted.
•
Replace defective synchronization module with S7-1500H.
•
Replace two defective redundancy connections with S7-1500H.
Both fiber-optic cables have been interrupted.
Evaluating the diagnostics buffer
Detailed diagnostics information is provided in the diagnostics buffer of the R/H-CPU. The
entries are particularly useful in the replacement scenarios for the redundancy connections:
•
S7-1500R: They contain information on whether one PROFINET cable or both PROFINET
cables have been interrupted or a port of an R-CPU is defective.
•
S7-1500H: You can access information on whether a fiber-optic cable has been
interrupted or the synchronization module is defective (with additional module
diagnostics).
13.1.3.1 Replacing two defective PROFINET cables with S7-1500R
Initial situation: Failure of two PROFINET cables, one after the other
Two PROFINET cables in the PROFINET ring have been interrupted one after the other at two
points (>1500ms apart).
The S7-1500R redundant system is in the RUN-Solo system state.
Requirement
Read the information in the section Checking before replacing components (Page 319).
323
Maintenance
13.1 Replacing components of the S7-1500R/H redundant system
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD