Generate PLC layout modules
AutoCAD Electrical can generate any of hundreds of different PLC I/O modules
on demand, in a variety of different graphical styles, all without a single,
complete I/O module library symbol resident on the system. Modules
automatically adapt to the underlying ladder rung spacing, whatever that
value might be, and can even be stretched or broken into two or more pieces
at insertion time. This is all possible because AutoCAD Electrical generates
PLC I/O modules through a parametric generation technique driven by a PLC
database (ACE_PLC.MDB).
The PLC database contains not just the stack sequence but also text values to
annotate onto each symbol in the stack. As AutoCAD Electrical builds the
module, it reads the underlying ladder rung spacing and spreads the stack out
or compresses it to match the rung spacing. During the insertion process, in
AutoCAD Electrical, you can interrupt it to break the module and then restart
it at a different location.
Parametric PLC symbols vs. Full Units
Parametric PLC symbols are stored in the \Program Files
[(x86)]
\Autodesk\Acade {version}\libs\jic1\ subdirectory (or \Program Files
[(x86)]
\Autodesk\Acade {version}\libs\jic125\ for 0.125 height version) along
with all of the other AutoCAD Electrical component symbols. Their file names
begin with the characters "HP" (Horizontal ladder rungs / PLC) or "VP" (Vertical
ladder rungs) followed by a digit that corresponds to a PLC I/O style number.
Each symbol is a building block with a different arrangement of attributes and
wire connection points. AutoCAD Electrical selects the appropriate symbols
to use, stacks them together in the order defined by the data file, and produces
a completed I/O module.
The PLC database file (ace_plc.mdb) is used to drive the PLC I/O module
generation process. You can modify the PLC database file manually or using
the
PLC Database File Editor
(page 232)(recommended method). The AutoCAD
Electrical PLC database file (ace_plc.mdb) is installed in the C:\Documents
and Settings\{username}\My Documents\Acade {version}\AeData\Plc
subdirectory.
Each Parametric PLC symbol is a building block with a different arrangement
of attributes and wire connection points. AutoCAD Electrical selects the
appropriate symbols to use, stacks them together in the order defined by the
parametric data file, and produces a completed I/O module. AutoCAD Electrical
inserts the symbols based upon the underlying ladder's rung spacing, explodes
218 | Chapter 5 PLC
Summary of Contents for 22505-051400-9000 - AutoCAD Electrical 2008
Page 1: ...AutoCAD Electrical 2008 User s Guide February 20 2007 ...
Page 4: ...1 2 3 4 5 6 7 8 9 10 ...
Page 106: ...94 ...
Page 228: ...216 ...
Page 242: ...HP W TERM_ VDC SPECIAL SPACINGFACTOR 0 5 HP WA D TERM_ 02 230 Chapter 5 PLC ...
Page 294: ...282 ...
Page 564: ...552 ...
Page 698: ...686 ...
Page 740: ...728 ...
Page 814: ...802 ...
Page 1032: ...1020 ...
Page 1134: ...1122 ...
Page 1168: ...1156 ...
Page 1177: ...Insert P ID Component Overview of pneumatic tools 1165 ...
Page 1198: ...1186 ...
Page 1269: ...AutoCAD Electrical Command In this chapter AutoCAD Electrical Commands 20 1257 ...
Page 1304: ...Z zip utility 82 1292 Index ...