Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 789)

L-force | PLC Designer
General Editors

DMS 4.1 EN 03/2011 TD29 787
Record Settings
See in the following a description of the trace configuration dialog for record settings.
Abb. 431 Trace Configuration, Record Settings
Trigger variable: Optionally a trigger can be configured, which should determine the
time span of tracing according to certain conditions. The following settings have to be
made for this purpose:
Enter a boolean variable, an expression or an analogue variable. Also enumeration
variables or property variables can be entered. When this variable has reached a
defined value according to the type of 'Trigger edge' (see below), the tracing will be
terminated after having additionally sampled that percentage of values which is
defined in the 'Position' field (see below). This means that as soon as the trigger gets
TRUE or reaches a certain value, the trace logging will be continued for a defined
number of cycles.
By button
the input assistant can be used to get an appropriate trigger variable.
Notice the possibility of controlling additionally the start of the tracing by the 'Record
condition' (see below).
Trigger edge:
none no trigger effect at all (Default)
positive trigger event on rising edge of the boolean trigger variable or as soon as the value defined by
'Level' for an analogue trigger variable is reached by an ascending run
negative trigger event on falling edge of the boolean trigger variable or as soon as the value defined
by 'Level' for an analogue trigger variable is reached by an descending run
both trigger event on the conditions described for 'positive' and 'negative' (see above)