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Entry type: FAQ Entry ID: 109478773, Entry date: 04/25/2016
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What is the meaning of the warning "The '...' graphic is used in different resolutions. ..." when compiling a WinCC (TIA Portal) project?

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When compiling WinCC (TIA Portal) projects with inserted bitmap graphics, you might get the warning "The '...' graphic is used in different resolutions. ..." This may lead to pixelation on the HMI device.". This FAQ response describes the reason for this warning and its remedy.

With WinCC (TIA Portal) projects you occasionally get the following warning when bitmap graphics are used in configured screens:
 


Fig. 01

"Pixelation" means a coarsening of the displayed graphics compared to the original.
Below we explain the causes for this warning and how you can react to it.

Cause
The warning is issued when a graphic from project graphics is used multiple times in graphic displays or graphic IO fields with different dimensions in each case. With the simultaneous access of multiple graphic displays/IO fields each one attempts to change the graphic to its size.
Therefore it is necessary to create a separate graphic for graphic IO fields and graphic displays of different sizes. Therefore you need graphic copies of your original graphic.
If graphic displays or graphic IO fields of the same size are used, the message does not appear.

Requirements
In your screen there are two or more graphic displays or graphic IO fields of different sizes that access the same graphic/graphic list. For controlling the graphic list there are already internal HMI tags parameterized and connected to the graphic IO fields.
 

Procedure
There are three different options for solving this:

Option 1: Solution via the Project graphics

  1. In the Project view you open the overview of the project-specific graphics via "Languages & resources > Project graphics".
  2. Mark the line of the screen that you want to duplicate by clicking the gray box at the beginning of the line.
  3. Copy the line using the "Copy" command in the pop-up menu or using the key combination "Ctrl + C".
  4. Insert a graphic copy using the "Insert" command or the key combination "Ctrl + V". The copy of the graphic is inserted automatically at the end of the project graphics.
  5. Link the newly created graphic.
  • Graphic display
    • Under "Properties > General > Graphic" you select the copied graphic via the black arrow.
  • Graphic IO field
    • In the operator panel under "Text and graphic lists" in the "Graphic lists" tab you create a new graphic list or copy an existing list.
    • Click in the "Graphic name" field and via the "..." button you select the duplicated graphic.
    • Open your screen and select the graphic IO field.
    • Under "Properties > General > Graphic list" you enter the new graphic list.
    • Under "Properties > General > Process value > Dynamization" you mark the process tag for controlling the graphic list.

Option 2: Solution via "Edit graphic" in graphic displays

  1. Open the screen and duplicate the graphic display.
  2. Right-click to open the pop-up menu and click the command "Edit graphic".
     

    Fig. 02
     
  3. In the dialog that opens you select the option "Edit graphic. Other points of use will not be modified.".
     

    Fig. 03
     
  4. The MS Paint graphics editor opens. Save the graphic and then close the graphics editor. You do not need to do anything else. In this way you have inserted a new copy of the graphic in the project graphics and its resolution corresponds to the display in the graphics display.

Option 3: Solution via "Edit graphic" in graphic lists

  1. In the operator panel under "Text and graphic lists" in the "Graphic lists" tab you copy an existing graphic list.
     

    Fig. 04
      
  2. Switch to the Table view of the copied graphic list. Mark a used graphic and via the "Edit" command in the pop-up menu you open the MS Paint graphics editing program.
     

    Fig. 05
      
  3. The MS Paint graphics editor opens. Save the graphic and then close the graphics editor. You do not need to do anything else. In this way you have inserted a new copy of the graphic and its resolution corresponds to the display in the graphics display. A copy of the graphic is created automatically in the project graphics.

  4. Assign a separate graphic list to each graphic IO field via "Properties > General > Graphic list". This ensures that each list is used by only one IO field.
     

    Fig. 06

Note
The warning is new in WinCC (TIA Portal). Therefore, after migration of WinCC flexible projects the warning might appear again after the first compilation in WinCC (TIA Portal).

Further Information

  • The Export Graphics Tool is available in Entry ID 109562021.

Additional Keywords
Error, Error message, Warning message, bmp graphic, Graphic

Security information
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https://www.siemens.com/cybersecurity#Ouraspiration.