PLC Programming

Managing Objects in a Project...
'New Folder'
With this command a new folder is inserted as a structural object. If a folder has been selected, then
the new one is created underneath it. Otherwise it is created on the same level. If an action is
selected, the new folder will be inserted at the level of the POU to which the action belongs.
The context menu of the Object Organizer which contains this command appears when an object or
the object type has been selected and you have pressed the right mouse button or +.
The newly inserted folder initially has the designation 'New Folder'. Observe the following naming
convention for folders:
• Folders at the same level in the hierarchy must have distinct names. Folders on different levels can
have the same name.
• A folder can not have the same name as an object located on the same level.
If there is already a folder with the name "New Folder" on the same level, each additional one with this
name automatically receives an appended, serial number (e.g. "New Folder 1"). Renaming to a name
that is already in use is not possible.
'Expand nodes' 'Collapse nodes'
With the command expand the objects are visibly unfolded which are located in the selected object.
With Collapse the subordinated objects are no longer shown.
With folders you can open or close them with a double mouse click or by pressing .
The context menu of the Object Organizer which contains this command appears when an object or
the object type has been selected and you have pressed the right mouse button or +.
'Project' 'Object Delete'
Shortcut:
With this command the currently selected object (a POU, a data type, a visualization, or global
variables), or a folder with the subordinated objects is removed from the Object Organizer and is thus
deleted from the project
For safety you are asked once more for confirmation.
If the editor window of the object was open, then it is automatically closed.
If you delete with the command 'Edit' 'Cut', then the object is parked on the clipboard.
'Project' 'Object Add'
Shortcut:
With this command you create a new object. The type of the object (POU, data type, visualization, or
global variables) depends upon the selected register card in the Object Organizer. Enter the Name of
the new POU in the dialog box which appears. Remember that the name of the object may not have
already been used.
Take note of the following restrictions:
• The name of a POU can not include any spaces
• A POU can not have the same name as another POU, or a data type.
• A data type can not receive the same name as another data type or a POU.
• A global variable list can not have the same name as another global variable list.
• An action can not have the same name as another action in the same POU.
• A visualization can not have the same name as another visualization.
In all other cases, identical naming is allowed. Thus for example actions belonging to different POUs
can have the same name, and a visualization may have the same as a POU.
4-42 CoDeSys V2.3