This System Configuration illustrates the use of an E_DELAY block to
ensure that a
STOP
event precedes the occurrence of a
START
event when performing a "dynamic update" of the period of an E_CYCLE block, i.e.,
changing the value of its
DT
input while its generation of
EO
events is running.
- To observe the operation of this system configuration, load and run it from the FBDK.
- The following test window will appear:
- Click the mouse in the text panel and tap the Enter key. The EO output will flash 4 times per second.
- Enter other values and observe the effect. Interesting
values are
t#110ms, t#150ms, t#500ms, ...
Other implementations may be able to use an E_SPLIT block to
sequence the
STOP
and
START
events; however, the Java™-based FBDK
implementation needs an E_DELAY
block to avoid a deadlock condition.