The Drawings and Reports task delivers a symbol library containing Isogen symbols. You can use the Intergraph Symbol Editor to modify the symbols.
Each symbol is associated with a unique code called a symbol key (SKEY). SKEYs contain 2-4 letters; the first two letters define the type of component, and the last two letters define the end type such as flanged, butt welded, or screwed. You can specify a wildcard for the end type. For example, when ** is specified for the end type, the software reads the End Prep from the part and assigns the correct Isogen end type.
You can map the symbol keys using the Edit Options command. This command opens Isogen Configuration, the tool used to control all the options related to the appearance and information content of the assorted styles of isometric drawings.
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Before you modify a symbol, review the dimensions and connect points. See Isogen SKEY Dimensions for additional information about the position of SKEY connection points..
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A list of delivered piping part classes and their corresponding SKEYs is available in Isogen Symbol Key Mapping.
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Additional SKEYs are available for use in customizing piping part classes. See the Isogen Symbol Key (SKEY) Definitions Reference Help.
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When defining 3- and 4-way valves, only define one leg of the valve. The software will copy the re-defined leg to the remaining legs. You must ensure that the leg of the valve you re-define has the connection to the left and the center point or spindle point to the right.
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The @ character in the symbol keys can be replaced with an integer value in the range 1 to 9, inclusive, to denote the number of segments. Currently, regardless of the value assigned to @, the software draws the symbol per the SKEY plotted isometric shape.
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The + character in the symbol keys can be replaced with an integer value in the range 1 to 9, inclusive, to denote the bend radius.
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You can map most components using an end preparation of 0. However, a notable exception is the nipple. For nipples, you must use two different SKEYs and Piping Component File (PCF) component identifiers, based on the end preparation. In other words, the SKEY mapping for nipples always requires end-prep information.
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If, during drawing extraction, the software encounters a component that lacks SKEY mapping data, the extraction continues as long as the Smart 3D.Drawing Creation.Symbol Map.Allow Unmapped Symbols option is set to True. The resulting drawing displays the component with an empty gap, along with an error message that points to the gap. In addition, the message file contains an error message.