Siemens SINUMERIK 840Di sl Commissioning Manual page 528

Drive Optimization with HMI Advanced
14.6 Trace function
Input field: Measurement time
The measuring time is written directly into the Measuring duration input field.
Input field: Trigger time
Direct entry of pre-triggering or post-triggering.
With negative input values (leading sign minus -) recording begins at the set time before the
trigger event.
With positive input values (without sign) recording starts the time set after the triggering
event.
Condition: Trigger time + measuring period y 0.
Input field: Trigger
The trigger type is selected in the Trigger drop-down list.
The trigger always refers to Trace 1. When the trigger condition is satisfied, Traces 2 to 4 are
started simultaneously.
Settable trigger conditions:
● No trigger, i.e. measurement starts when you operate the Start softkey (all traces are
● Positive edge
● Negative edge
Input field: Threshold
Direct input of the trigger threshold.
The threshold is only effective with trigger types "Positive edge" and "Negative edge".
The unit refers to the selected signal.
Softkey: Axis +/Axis -
Selection of the axis/spindle when the cursor is positioned on the appropriate "Axis/spindle
name" list field.
You can also select the axis/spindle directly in the list box from the dropdown list using the
cursor.
Softkey: Start/Stop
Recording of the trace function is started with the Start softkey.
With the Stop or RESET softkey, you can cancel a running measurement.
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started in synchronism).
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Manual