Trace - Siemens SIMATIC S7-1500 System Manual

Advantages and customer benefits
Integrated system diagnostics offers the following advantages:
• Diagnostics is always consistent with the actual state of the plant. In S7-1500R/H
redundant mode, the diagnostic information is synchronized between the CPUs.
• The uniform display concept enables efficient error analysis.
• The immediate identification of the error source in the event of an error speeds up
commissioning and minimizes production downtimes.
• By configuring diagnostics events, you tailor the diagnostics to the requirements of your
automation task.
Reference
You will find more information on diagnostics in the Diagnostics
(https://support.industry.siemens.com/cs/ww/en/view/59192926) function manual.
4.3.6

Trace

The trace functionality facilitates troubleshooting and optimization for the user program.
Trace records device tags and evaluates the recordings. This allows you to analyze defective
signal responses. Tags are, for example, drive parameters or the system and user tags of a
CPU. Because the CPU records tags directly, the trace and logic analyzer function is suitable
for monitoring highly dynamic processes.
NOTE
Trace restrictions
The S7‑1500R/H redundant system does not support the storage of measurements on the
SIMATIC memory card.
Example of signal response analysis
To analyze a specific signal response, you define the recording and trigger conditions for the
signals to be recorded.
①
The trace function can be called in the project tree from the "Traces" folder under the top
CPU of the redundant system.
The trend diagram
diagram as a bit track.
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
②
displays the selected signals of a recording. Bits are shown in the lower
System overview
4.3 S7-1500 R/H-CPUs
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