GetNextNode (FUN)

FUNCTION GetNextNode : INode

The function implements a depth-first search. Nodes will be returned in top to bottom order of the device tree

Example

Following example code counts all nodes in the device tree.

PROGRAM PLC_PRG
VAR
   itfNode : DED.INode;
   uiNodes : UINT;
END_VAR

itfNode := DED.GetRoot();
REPEAT
    itfNode := DED.GetNextNode(itfNode);
  uiNodes := uiNodes + 1;
UNTIL
  itfNode = 0
END_REPEAT

InOut:

Scope	Name	Type	Comment
Return	GetNextNode	INode
Input	itfCurrent	INode	node from which the search shall be started.