Symbols

The proper symbol can be determined by three Selectors:

1. Specification - according to specification.

   Generally, elements like SCVALVE, SCEQUI, SCTUB, SCNOZZ etc have an attribute called SPREF or CATREF.

   These attributes point to an element located in the catalogue database. The database attribute SPREF/CATREF should point to the catalogue element where its Symgroup (Symbol Group) attribute points to the stencil name and the Symname (Symbol Name) attribute points to the master name. If the given information is invalid a message will be displayed in the Message Log.

   

2. Settings - according to options.

   The proper symbol for each element can be determined in Diagrams Options > Unassigned Items settings. See below.

   

   Each element type can have many rule based settings and one default value that will be used if there is no rule to match the chosen element.

   Example

   If the equipment atttribute Purpose is set to PUMP then the In Line Pump shape from the Sample_Equipment_Symbols is used. If the attribute Purpose is set to a different value then the Rotary Pump from the Sample_Equipment_Symbols is used.

   

   It is possible to modify the values directly in the Settings Window or manage them via the Manage dialog. You can either click the Manage button or right-click the Unassigned Items node.

   

   Here it is possible to add, remove or modify settings. It is also possible to change the priority of rules for elements using the Move Up or Move Down buttons. The top position has the highest priority. In the following dialog Winch is used for the dropped equipment item when its description is set to Winch even though the attribute Purpose is set to PUMP.

   

   To select a symbol click the Browse button. A new dialog opens where the left pane displays the available stencils. Select a stencil. The symbols connected to that stencil will be shown in the right hand pane of the dialog.

   Note:
   Clicking the Browse button in a row where an Element Type is set will only display the matching symbols in the right hand pane. If the Element Type is not set all the available symbols from the stencil will be displayed. In the below dialog the Sample_Equipment_Symbols stencil also contains Nozzle but this is not visible as the Element Type is set to Equipment.

   

   When the Attribute or Value columns are not set, then this will be considered to be the default value. This will mean that this symbol is chosen if no match is found on any other settings for this element type. There can only be one default value for each element type.

3. Manual selection - according to user selection

   If you drag and drop an element from the explorer to the drawing area a window that contains the symbols that can be used for the dropped element is displayed. The symbols displayed are imported from the already opened stencils. You can load more symbols from the stencils by clicking the Load symbols button.

   Information about the stencil from which the symbol has been imported can be retrieved by hovering with the mouse over the symbol.