2008

Table Of Contents
The top and bottom ones are assigned an Allen-Bradley part number for a
30mm pilot light (catalog part number 800H-PR16R) and the middle one is
given a part number for a smaller, 22.5mm 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 repeated
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: LT411 and LT413 have the 30mm
pilot light catalog part number and LT412 has the smaller pilot light part
number.
The three red pilot lights are represented as footprints in the panel layout as
shown.
On the physical panel layout drawing, these pilot light symbols are inserted
as footprint blocks using the Insert Footprint (Schematic List) tool. Notice
that LT412 (the 22.5mm pilot light) appears smaller than the others.
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.
Relationship between schematic drawings and panel layouts | 1027