Transitions in FBD

Use →transitions in order to create a step sequence (an →SFC network).
Several transitions are allowed per SFC network. See the notes under SFC elements in drawing field how to create/use SFC networks efficiently and correctly.

Each transition requires at least one predecessor step, one successor step and one transition condition.

Lines visualize the connections to the other FBD-elements in the drawing field.

Representation

Example for a transition, the name of the transition is not visible:

The transition input in is located on the top edge, the transition output out on the bottom edge, the input for the transition condition T on the left edge.
The transition input and the transition output are connected to →steps, the input for the transition condition is connected to a Boolean →variable or →literal (e.g. a →value field containing a Boolean variable).

 Depending on the configuration of your Neuron Power Engineer version, the FBD-editor and its elements might be displayed differently in your Neuron Power Engineer version than illustrated in the IDE documentation. This is the case, if Neuron  or the system integrator has activated the smart styling or one of them has changed the styles for the FBD-editor. Subsequently, the illustration in the IDE documentation are symbolic images and the representation in your Neuron Power Engineer version takes precedence for the valid representation. In case of doubts, please contact Neuron or your system integrator.

Neuron recommends that you and/or your system integrator do not use yellow shades when designing FBD-elements because the color "Yellow" is used for tracking safe signals when developing safety-related applications. This recommendation applies in particular when you are using the legacy styling. Neuron Power Engineer does not check if colors are already used elsewhere. So the use of the yellow shades by you and/or your system integrator could have the consequence that "yellow" might also identify a non-safe logic as well.

Actions for transitions