A Symbol Lookup Table is used to match up AutoCAD Blocks and MicroStation Cells to CAD Symbols via a lookup table. If a lookup table is not defined the Blocks & Cells will be exploded to their most primitive elements. From the AutoCAD or DGN Conversion Settings dialog box select a symbol lookup table (.SLU file) from the Symbol Lookup Table list and press Edit. The .SLU file will be opened in the currently configured text editor.
All lookup tables are created and held in the system's folder.
The lookup table is then set up in the following format.
AutoCAD
SYMBOLID1 = BLOCKname1
SYMBOLID2 = BLOCKname2
MicroStation DGN
SYMBOLID1 = CELLname1
SYMBOLID2 = CELLname2
When exporting an AutoCAD file, if the symbol lookup table is set, it is used to convert LISCAD symbol names to AutoCAD block names. This is helpful when you need to match a LISCAD symbol to an AutoCAD block defined in the prototype drawing you are using.
When importing an AutoCAD file and 'Match Blocks to Symbols' is set, all blocks in the AutoCAD file are matched with a corresponding LISCAD symbol. A symbol lookup table is useful to reference AutoCAD Block names to LISCAD symbols. If a match is not found, a default LISCAD symbol is used.
If 'Match Blocks to Symbols' is not set, all incoming AutoCAD blocks will be exploded and any symbol lookup table will be ignored.
Tip:
- To create a new lookup table, open an existing one and Save As a new name.