2008

If your symbol does not carry the WDBLKNAM attribute:
1 The symbol is checked for the WDBLKNAM attribute (or Xdata). It is not
found.
2 The block name is read (“HCR1_MC_PWR”) minus its first character (the
orientation character “H” or “V”). The default_cat.mdb file is searched
for a table named “CR1_MC_PWR.”
3 If this table exists, it is used. If this table does not exist and the block
name is 8 characters or more, AutoCAD Electrical starts removing
characters from the block name until there are only 7 characters left,
looking for a table name match with each character removed. Table names
that it would look for in sequence would be “CR1_MC_PW”, “CR1_MC_P”,
“CR1_MC_.”
4 If there isn’t a match on the last table name, AutoCAD Electrical checks
for the family-specific table (CR). This is the second and third character
of the block name.
5 If this table exists, it is used. If it does not exist, a MISC_CAT table is
looked for if the active project’s properties are set up to use this catch-all
table.
6 If all of these items fail, AutoCAD Electrical stops looking (if running a
report) or prompts you to add a table to the default_cat.mdb file (if you
are inserting or editing a component).
If your symbol includes the invisible WDBLKNAM attribute with a value of
“HCRM”:
1 The symbol is checked for the WDBLKNAM attribute (or Xdata). It is
found. The attribute’ s value of “HCRM” is used instead of the block name
and proceeds to step 2.
2 The leading “H” or “V” character is removed. The default_cat.mdb file
searches for a table named “CRM.”
3 If this table exists, it is used. If the table does not exist and the attribute
value is 8 characters or more, AutoCAD Electrical starts removing
characters from the attribute value until there are only 7 characters left,
looking for a table name match with each character removed. (In this
case, characters are not removed.)
4 If there isn’t a match on the last table name, AutoCAD Electrical checks
for a family-specific table (CR). This is the second and third character of
the original WDBLKNAM value (HCRM).
Use catalog tables | 767