Copying, Pasting and Duplicating Fault Tree Nodes

There are two ways to "copy" a node in a fault tree:

Copying and Pasting Nodes

The copy and paste commands allow you to create an exact copy of a node. This should be used when two nodes are very similar, so using one as a basis for the other reduces the amount of data entry. This should NOT be used to create multiple instances of the same node in a fault tree (for this, see Using Reference Nodes below).

Creating a Copy of a Node or Nodes

  • Select one or more nodes.
  • Select HOME | Edit | Copy or press Ctrl+C.
  • Select HOME | Edit | Paste or press Ctrl+V.

WARNING: DPL will not allow two nodes to have the same name. DPL provides a new node name by default (i.e., Node Name (copy)).

If you select the connection between two selected nodes and copy, the connection will also be copied. You may also copy text blocks.

Using Reference Nodes

There may be situations for which you want the same event to appear multiple times within a fault tree. It is possible to place a duplicate of a node elsewhere in the tree. The duplicate node is simply a reference to the node that was copied. If A is the short name of the defining instance of a node, the reference node will have the name *A.

If the node is a binary event, DPL will treat these as the same event when performing computations rather than as two events with the same probability of occurrence. In contrast to this, you may also create a duplicate of a value node and use it to initialize the probability of multiple events. In this situation, the events are treated as separate events each with the same probability of occurrence.

Creating a Duplicate (Reference) Node:

  • Click on FAULT TREE | Connection | Add.
  • Click on an already connected node for which you are creating a reference.
  • Click on another node in the tree to which the reference will be connected.
DPL creates a duplicate reference node and draws the new connection. If you hover over the original node, DPL draws a dotted line to the reference node (or vice versa) to indicate the nodes are linked.

Versions: DPL Fault Tree

See Also

Fault Tree Nodes