FB Viewer

• Status Line:This area provides a short description of the currently selected item, and may also show error messages.
• Navigation Tree: This control allows you to choose what will be displayed on the Worksheet area, including:
• the external interface
• the Execution Control Chart (ECC) for basic function block types
• service primitive sequences for service interface function block types
• function block networks for composite function block types; device and resource types and instances; system configurations; and algorithms in the IEC 61131-3 FBD language
• ladder diagrams for algorithms in the IEC 61131-3 LD language
• Worksheet/Viewport:
  1. This area contains a "worksheet" area which may be larger than, equal to, or smaller than the "viewport" frame. If the worksheet is larger than the viewport, scrollbars appear to assist navigation.
  2. When you click the mouse over elements in this area (including vertical line segments), the corresponding declaration will be highlighted in the Text Area. Depending on your operating system and browser, you may have to scroll the Text Area to make the selected text visible.
• Text Area: You can scroll and cursor through this area to view the source text for the library element. Tabs in this area let you select one of the following views:
• XML - When this tab is selected, the Text Area shows the IEC 61499-2 XML source text of the library element being edited.
• src - When this tab is selected, the Text Area shows the IEC 61499-1 source text of the library element being edited.
• Resize Bars: Dragging on these bars changes the relative size of the Viewport, Navigation and Text areas. If this operation results in the length or width of the Viewport being larger than the respective dimension of the Worksheet, it will be adjusted along either or both of these dimensions to fit the larger Viewport.