Artesyn System Management Interface Based on HPI-B (Centellis CO 31kX-4100-2000-4410) (June 2014) - Manual (Page 43)

Using HPI-B
System Management Interface Based on HPI-B (Centellis CO31kX/4100/2000/4410) User’s Guide 43
reestablished, the domain is recreated and the application can open another session and
access the domain again. Whenever a domain is created or removed, an HPI event from the HPI
Communication State sensor is generated in the default domain (see
Connection State Sensor
on page 48 and HPI Domain Events on page 49 ).
HPI events are handled domain wide. This means that HPI events from a shelf or FRUs in that
shelf are only visible and can only be received within the session that corresponds to that
domain.
4.3.3 How Domains and Shelves are Represented
As previously mentioned, each HPI implementation has at least the default domain. It has the
ID 0 assigned to it.
Starting with HPI-B, the default domain contains a Domain Reference Table, which contains
references to all related domains and may be used by applications for discovery of available
domains in the current configuration. For more information about the Domain Reference
Table, refer to the HPI-B specification document of the SAI-HPI-B.02.01 standard.
In the Artesyn HPI-B implementation, the default domain furthermore contains multiple HPI
resources which handle connected shelves and their corresponding HPI domains. These HPI
resources were defined and added by Artesyn and are called Domain Management Resource
and Shelf Management Resource.
The Domain Management Resource contains one HPI control and allows applications to
add/remove HPI domains/shelves to the HPI environment. The Shelf Management Resource
contains one HPI control and one HPI sensor and acts as reference to connected daemons.
There is one Shelf Management Resource for each connected daemon. The following figure
shows an example configuration with the HPI resources, controls and sensors which are related
to the handling of multiple shelves/domains in it.