Reflex function block: Monostable with time delay
(Original Document)
About us
Role
This function enables an action of a duration t2i to be launched with a t1i delay, with the possibility of extending it for an identical duration.
Structure
The table below shows the block's different interfaces.
Name
Meaning
Illustration
E
Monostable input.
x
Monostable's physical output.
x Aux
Block's internal auxiliary output.
Operation
This table describes the different operating phases of the monostable with time delay.
Phase
Description
1
On the rising edge of input E :
  • time-out t1i is launched (time-base of 0.1ms),
  • output x Aux changes to 1.
2
When time out t1i is over:
  • time-out t2i is launched (time base of 0.1ms),
  • output x changes to 1 for duration t2i.
If the high status of input E lasts less time than time-out t1i, output x stays at 0.
3
When time-out t2i is over, outputs x and x Aux change to 0.
If a new rising edge for input E occurs before time-out t2i has elapsed:
  • output x remains at 1 for duration t2i of the cycle in progress.
  • a new cycle begins (see phase).
Illustration
The illustration below shows the trend diagram of the monostable with time delay function block.