2011

LT411 and LT413 are assigned an Allen-Bradley part number for a 30-mm
pilot light (catalog part number 800H-PR16R). LT412 is given a part number
for a smaller, 22.5-mm pilot light (catalog part number 800MR-P16RS). The
manufacturer and catalog part number assignments are carried on invisible
attributes MFG and CAT on each instance of the red pilot light symbol. All
three symbols look the same on the schematic since they are the same
AutoCAD block symbol. The difference is the assigned part number attribute
values that each carries.
The three red pilot lights are represented as footprints in the panel layout as
shown. Notice that LT412 (the 22.5-mm pilot light) appears smaller than the
others.
Footprint Mapping
On the physical panel layout drawing, these pilot light symbols are inserted
as footprint blocks using the
Insert Footprint (Schematic List) on page 1536 tool.
AutoCAD Electrical knows which physical representation block symbol to use
for each instance of the pilot light schematic symbol based on the
manufacturer and part number assignments applied to the MFG/CAT attributes.
The vendor name and part number are mapped to the correct footprint drawing
(.dwg) file. This drawing is then inserted as a block on the panel layout
drawing.
There are two key elements that make this work:
■ Vendor footprint library (.dwg) files - two symbols from this library are
shown here. They are for Allen-Bradley red pilot lights 30 mm and 22.5-mm
styles respectively.
Schematic and panel symbol relationship | 1533