Replacing Defective Redundancy Connections - Siemens Simatic S7-1500R System Manual

11.1.3

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 265).
● 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).
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
11.1 Replacing components of the S7-1500R/H redundant system
Maintenance
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