Pulse Rising Edge Coil
Pulse rising edge coils or "Positive" coils enable Boolean output of a connection line Boolean state.
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Left Connection | Right Connection |
The associated variable is set to TRUE when the Boolean state of the left connection rises from FALSE to TRUE. The output variable resets to FALSE in all other cases. The state of the left connection is propagated into the right connection. The right connection can be connected to the right vertical power rail.
Example

(* ST Equivalence: *)
IF (input1 and NOT(input1prev)) THEN output1 := TRUE; ELSE output1 := FALSE; END_IF; (* input1prev is the value of input1 at the previous cycle *)
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