Klassische Benutzeroberfläche > Parametrisches Konstruieren mit Creo Elements/Direct Drafting für die klassische Benutzeroberfläche > Working with Parametric Design > Solve > Solver Errors
Solver Errors
The solver or automatic constraint generator will fail without generating a complete solution if incomplete or inconsistent constraints exist on a part. Solver errors can result from any of the following conditions:
• The solver has successfully evaluated all the constraints it could find, but some elements cannot be resolved. More constraints are needed in order to completely constrain the part and generate a variation.
• A constraint has been violated while determining the new geometry. This is usually due to contradictory constraints on one or more elements in the part. For example, if two lines are constrained with different Slope constraints and are also constrained to be parallel, one of these constraints cannot be satisfied.
• An expression has been violated while determining new geometry. As with a violated constraint, a violated expression occurs when the result of a parametric expression contradicts an existing constraint.
When the solver or automatic constraint generator fails due to one of the above problems, a descriptive message is written to the prompt line and the solver goes into preview mode to show the status of the solution at the time the error was encountered. Elements that were successfully solved are displayed in their new positions using the Preview color (MAGENTA by default). Elements that were still unsolved when the solver exited are displayed in their original position, color and linetype. This often gives a good indication of the elements that caused the failure.
The STATUS commands on MENU 4, however, usually provide the clearest indication of problem sources. After every solve or constraint-extraction command, one or more info strings are always written to each drawing element that was affected by the command. These info strings give the current solve status of each element. STATUS ON and STATUS OFF allow you to selectively display or hide elements based on their solve status. These status displays are very effective for pointing out problem areas, especially in complex drawings, where highlighting may not clearly identify problem elements.
The Status options are described below.
Option
STATUS ON/STATUS OFF Function
 
All
Display/hide all elements in the model.
Solved
Display/hide elements that were completely determined by the last solve or constraint extraction command. These elements have the PD_STATUS SOLVED info text.
 
Unsolved
Display/hide elements that were completely undetermined by the last solve or constraint extraction command. Unsolved elements either had no constraints on them or the solver exited before reaching them. These elements have the PD_STATUS UNSOLVED info text.
 
Partially
Display/hide elements that were partially determined by the last solve or constraint extraction command. Some, but not all degrees of freedom have been determined for these elements. These elements have the PD_STATUS PARTIAL info text.
 
Inconsist
Display/hide elements whose constraints have caused an inconsistency in the most recent solve or constraint-extraction process. These elements have the PD_STATUS INCONSISTENT info text. Inconsistent elements always fall into one of the three previous categories as well.
War dies hilfreich?