Lenze DDS v2.3 - Manual (Page 52)

Drive PLC Developer Studio
Programming languages
4-14
l
DDS EN 2.3
Example of a two-action IEC step:
•
For easier monitoring of the processes, all active actions, like active steps, are displayed in
blue in online mode. Which actions are active, is checked after every cycle.
•
Whether a newly inserted step is an IEC step is dependent on whether menu command
Extras
➞ ➞ ➞ ➞Use IEC steps has been selected.
Note!
Note restriction on the use of time qualifiers for actions used more than once within the same cycle.
Following a call, the deactivated actions are processed first before all active actions, both in
alphabetical sequence.
In the Object Organizer, the actions are attached directly under the associated SFC organization
unit:
•
New actions can be generated with Project ➞ ➞ ➞ ➞Add action.
4.4.7 Qualifiers
The following qualifiers are available to associate actions to IEC steps:
N Non-stored The action is active as long as the step is active.
R overriding Reset The action is deactivated.
S Set (Stored) The action is activated and remains active until reset.
L time Limited The action is active for a certain period of time but no longer than the step is active.
D time Delayed The action will become active after a certain period of time, as long as the step is still active, and
then as long as the step remains active.
P Pulse The action is executed exactly once-only when the step becomes active.
SD Stored and time Delayed The action is activated after a certain period of time and remains active until reset.
DS Delayed and Stored The action is activated after a certain period of time as long as the step is still active, and remains
active until reset.
SL Stored and time Limited The action is active for a certain period of time.
•
The qualifiers L, D, SD, DS and SL require a time specification in TIME constant format,
e.g. L T#5s.
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