One Shot Rising Output (OTP)
OTP supports a Boolean output of a connection line Boolean state.
OTP

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 must be connected to the right vertical power rail, unless you have parallel coils, where only the upper coil must be connected to the right vertical power rail.
The associated Boolean variable must be an output or be user-defined.
OTP example

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