Reflex function block: Idle timer
(Original Document)
Role
This function is used to apply an off-delay to an action.
Structure
The table below shows the block's different interfaces.
Name
Meaning
Illustration
E
Timer input.
x
Timer's physical output.
x Aux
Block's internal auxiliary output.
Operation
This table describes the different operating phases of the idle timer.
Phase
Description
1
The x output changes to 1 when the E input changes to 1.
2
On the falling edge of the E input, time-out ti is launched (time base of 0.1ms).
3
When the time-out is over, the x output changes to 0.
If the low status of input E lasts less time than ti, output x stays at 1.
Note: The values of outputs x and x Aux are identical.
Illustration
The illustration below shows the trend diagram of the idle timer function block.