Trace Function; Overview - Siemens Sinamics S120 Comissioning Manual

5.3.2

Trace function

5.3.2.1

Overview

Definition
Using the trace function, you can record the variables of a drive, and then subsequently
evaluate the traces. For example, variables include drive parameters or system and user
variables of a CPU. The maximum recording time is limited by the memory size.
A maximum of 8 individual channels can be recorded (refer to "Number of individual traces").
The recordings are directly saved to the drive, and when required, can be read out and
permanently saved using the engineering system (ES). As a consequence, the trace function
is suitable for monitoring high-speed operations. The recorded values are overwritten when
the trace function is reactivated.
Active recordings from the axis control panel are displayed as traces in the drive in the
"Traces" system folder. In the curve diagram of the axis control panel – or from the PID –
recordings can be added to the measurements using the shortcut menu.
The signals to be recorded, the recording time and the trigger conditions are defined in the
trace configuration.
Table 5- 18
Term
Trace configura-
tion
(Trace) recording
Trace in the de-
vice
Measurement
Measurement on
the device
(memory card)
Trace configura-
tion with the same
name in the drive
and in the project.
Commissioning with Startdrive
Commissioning Manual, (IH3), 07/2016, 6SL3097-4AA10-0BP0
Trace terminology
Icon Meaning
Settings for the signals to be recorded and the recording conditions
are defined in the trace configuration.
- A trace is being recorded in the device. One recording exists in the
drive for each trace configuration. Each new recording overwrites an
existing recording. A recording in the drive is lost after each switch-
off/switch-on operation, however, the measurement can be perma-
nently saved in the project.
A trace in the drive comprises a trace configuration and optionally,
one recording.
A measurement always comprises one trace configuration and the
associated recording. The recording of a measurement can also be
viewed offline.
Measurements are archived in the folder which are saved in the de-
vice (e.g. on the memory card).
These measurements are retentive and can only be deleted by the
user. The measurements in the device can be imported into the folder
via drag and drop and thus be saved in the project as measurement.
Generally, for a trace configuration in the drive, there is also a trace
configuration of the same name in the PG project.
Diagnostics
5.3 Diagnostics via Startdrive
155