FFLD Power Rail and Lines

Vertical power rails are used in the FFLD Language to represent the limits of a rung.

• The power rail on the left represents the TRUE value and initiates the rung state.
  • Any object connected to this rail is always powered.
• Horizontal lines always represent a data flow from the left to the right.
• If a vertical line has several items connected on the left, then it represents an OR / ORN operation.
• You can insert a segment of horizontal line at any location to freely draw flow lines.
  • The vertical line button is used to set or remove (toggle) a segment of vertical line on the right of the selected cell.