Logic Solver Bi-directional Edge Trigger function block

The LSBDE function block generates a True (1) discrete output when the discrete input makes a positive (False-to-True) or a negative (True-to-False) transition since the last execution of the block. If there has been no transition, the discrete output of the block is False (0).

The LSBDE function block supports signal status propagation. There are no modes or alarm detection in the block.

Figure: LSBDE Function Block

IN_D is the discrete input signal and status.

OUT_D is the discrete output signal and status.

The following figure shows the internal components of the Bi-directional Edge Trigger function block:

Figure: Bi-directional Edge Trigger Function Block Schematic Diagram