Setup guide

OSx Migration Cookbook August 30, 2006
6 – Naming Issues
Name spaces
Naming
constraints
A name space is a set of names that are managed together. Names
within one name space must be unique. Names in separate name
spaces can coincide. OSx treats the names of tags, and action
requests as separate name spaces. Therefore, an action request can
have the same name as a tag. PCS 7/505 OS manages all of these in
a single name space. Thus, an action request cannot have the same
name as a 505 tag. DBA folder names are also included in this
single namespace.
When importing OSx configurations into PCS 7, object names must
be managed. The PCS 7/505 DBA tool has features to add suffixes
and/or prefixes to the names of imported objects to help make them
unique.
OSx and PCS 7 do not have the exact same constraints for object
names. Characters that are allowed in OSx and disallowed in PCS 7
will be replaced with underscores when imported via DBA. This
can happen in two situations: tag names and folder names.
OSx uses a colon when specifying a tag and its attribute: e.g.,
TS42:pv. PCS 7 uses a period: e.g., TS42.pv. When DBA
encounters a period in the name of an OSx tag it converts that
period to an underscore as part of the import: e.g., OSx tag
temp.sensor becomes PCS 7 tag structure temp_sensor.
DBA provides a feature to auto-create a folder hierarchy based on
the OSx process group descriptors or the parent tag names. If these
descriptors or names contain characters other than digits or letters,
those characters will be converted to underscores: e.g., a process
group whose descriptor is “My Favorite Process Group” in OSx
will cause a folder whose name is “My_Favorite_Process_Group”
to be created.
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