Threshold element
The output variable will be 1 only if at least two input variables
are 1. The number in the symbol may be replaced by any other
number.
(m out of n) element
The output variable will be 1 only if just one input variable is 1.
The number in the symbol may be replaced by any other number
if the number of inputs is increased or decreased accordingly.
Delay element
The transition from value 0 to 1 at the output occurs after a time
delay of t1 relative to the corresponding transition at the input.
The transition from value 1 to 0 at the output occurs after a time
delay of t2 relative to the corresponding transition at the input.
t1 and t2 may be replaced by the actual delay values (in seconds
or strobe ticks).
Monostable flip-flop
The output variable will be 1 only if the input variable changes to
1. The output variable will remain 1 for 100 ms, regardless of the
duration of the input value 1 (non-retriggerable).
Without a 1 in the function block, the monostable flip-flop is
retriggerable.
The time is 100 ms in this example, but it may be changed to any
other duration.
Analog-digital converter
An analog input signal is converted to a binary signal.
Subtractor
The output variable is the difference between the two input
variables.
A summing element is obtained by changing the minus sign to
a plus sign at the symbol input.
Schmitt Trigger with binary output signal
The binary output variable will be 1 if the input signal exceeds a
specific threshold. The output variable remains 1 until the input
signal drops below the threshold again.
Memory, general
Storage of a binary or analog signal.
P634 A3 Glossary
A3-4 P634/EN M/R-42-A // P634‑311‑653
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