Autodesk 22505-051400-9000 - AutoCAD Electrical 2008, User Manual, Page: 1225 / 1304

you would have to modify the block file to add additional attributes such
as Line3.
Top terminals are the only symbols which can accept prompts during
the parametric PLC insertion process.
2 Edit each attribute value for the TAG attributes to read "IN-%%N."
Besides the Module Prompt variables, AutoCAD Electrical also supports
the use of an address variable. When the module is inserted, the PLC I/O
addresses are calculated based on some AutoCAD Electrical settings and
the module settings. You can trigger AutoCAD Electrical to include a
prefix or suffix to each address value it inserts.
The %%N represents the calculated I/O address and the IN- is the prefix
that gets added to the address value. You can also use the prompt values.
For example, if you want to permanently encode the rack and group
numbers (%%1 and %%2 prompts) into each I/O address value, encode
each I/O address entry in the date file with "TAGA_=%%1%%2%%N."
3 If you want to assign a text constant to any attribute value, combine a
text constant with the variables as shown in the module prompts and
addressing examples above.
Inserting the PLC module into the drawing
1 Click Save Module to save the module to the PLC database file.
2 Click Done/Insert.
The PLC Parametric Selection dialog box displays.
3 Click OK to insert the new PLC module onto the drawing.
4 Specify the insertion point on the drawing.
5 In the Module Layout dialog box, click OK.
6 In the I/O Address dialog box, specify a beginning I/O address or use the
quick picks to select an address (such as I:/00).
7 Click OK.
Your module should look similar to the following. The Manufacturer,
Catalog Number, and Description attributes also display at the top of the
module (not shown).
Use the PLC Database File Editor | 1213