Reset Coil
Reset coils enable Boolean output of a connection line Boolean state.
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Left Connection | Right Connection |
The associated variable is reset to FALSE when the Boolean state of the left connection becomes TRUE. The output variable keeps this value until an inverse order is made by a SET coil. 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 THEN output1 := TRUE; END_IF; IF input2 THEN output1 := FALSE; END_IF;
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