A drawing needs an invisible block, WD_M.dwg, on the drawing to be compatible with AutoCAD Electrical toolset.
The WD_M.dwg block is located in the default symbol library. This block carries about 50 attributes that define settings, layer names, and other default settings that are referenced by AutoCAD Electrical toolset commands.
Note: If the drawing includes panel layout symbols, the block WD_PNLM.dwg is also needed. The WD_M and WD_PNLM blocks can be present on the same drawing.
To insert a WD_M or WD_PNLM block
- If the WD_M block is not present in a new or existing drawing, click OK to insert the block at location 0,0.
- If the WD_PNLM block is not present in a new or existing drawing when using panel layout symbols, click OK to insert the block.
- To force the drawing settings to match the project settings, select the check box.