Lenze Engineer v2.21 - Manual (Page 119)

Lenze · Engineer · 2.13 EN - 10/2014
119
Device functions with active online connection
Data logger
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7.7.2.4 Using the time axis
The icon in the Data logger toolbar serves to activate the "Time axis" mode for a continuous
measurement.
In this mode, the data memory for the measured data operates according to the ring buffer
principle, i.e. if the data memory is full and new measured data arrive, the oldest measured data will
be deleted. The time axis is tracking, similar to a cardiogram.
7.7.2.5 Starting/stopping recording

How to start/stop recording:
Click Start to start recording.
• Instead of Start the Stop button is displayed now.
• In the standard mode, recording automatically stops at the end of the time axis. The Stop
button serves to abort recording.
• In the "Time axis" mode, recording will only be stopped if you click Stop.
Post-trigger Select a positive delay time to detect signals occurring a certain time after the trigger
event.
Edge If the trigger source is a channel or a variable, you can choose between the following
trigger modes:
Positive edge For triggering on a BOOL parameter:
• Trigger activation requires a FALSE-TRUE transition.
For triggering on a different parameter:
• For trigger activation, the selected trigger value must be exceeded.
Negative edge For triggering on a BOOL parameter:
• Trigger activation requires a TRUE-FALSE transition.
For triggering on a different parameter:
• For trigger activation, the selected trigger value must be fallen below.
Change For triggering on a BOOL parameter:
• Trigger activation requires a state change.
For triggering on a different parameter:
• For trigger activation, the current value must be different than the last value.
Setting Function
Trigger event
Trigger
delay
(positive)
Trigger level

Note!
If you change the mode, the currently represented line diagram will be deleted.