GetNextNode (FUN)ΒΆ

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.