Lenze E94AxPExxxx - Manual (Page 617)

Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
617
13 Oscilloscope
13.4 Operation
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13.4.3 Defining the trigger condition
The trigger condition serves to define the starting time of recording in the controller. The
oscilloscope provides various trigger conditions by means of which recording of the measured
values can be controlled.

If the Cursor tab is selected, click the Trigger tab to show the input fields for configuring the
trigger condition.
Setting Function
Direct trigger Selection of trigger source:
Variable The oscilloscope triggers on any variable of the PLC program.
• Unlike triggering on a channel, triggering on a variable requires no recording channel.
Channel The oscilloscope triggers on a channel configured in the Vertical table.
System event Triggering is started on occurrence of a selectable controller event (e.g. TRIP, trouble or
warning).
• Select a negative trigger delay to record signals prior to occurrence of the event.
Force trigger No trigger condition, recording starts immediately after the start.
Trigger value Value from which on triggering is activated.
• The trigger level is not effective for triggering on Boolean variables.
Delay Delay between recording and trigger event.
Pre-trigger Select a negative delay time to detect signals prior to the trigger event.
• In the oscillograph, the trigger time is marked by a dotted line.
• When triggering on occurrence of an event, it is thus possible to detect the values that
have caused the event.
Post-trigger Select a positive delay time to detect signals occurring a certain time after the trigger event.
Trigger event
Trigger
delay
(negative)
Trigger level
Trigger event
Trigger
delay
(positive)
Trigger level