Emerson 4620 用户手册

System Management Interface Based on HPI-B (Centellis 4620) User’s Guide (6806800D85A)

Using HPI-B

How Domains and Shelves are Represented

The shelf management resource contains the following two RDRs:

Domain management control
Read-only HPI control which allows the application to obtain the IP address, port, domain
name and other connection parameters of a particular shelf

Connection status sensor
Contains information about the current status of the connection to a shelf

The definitions of both HPI controls are given in the following.

4.3.3.2.1

Domain Management Control

This HPI control is only readable. It has the same structure and definition as the HPI controls
defined in

Table "Domain Management Control" on page 29

Table "Domain Management

Control State" on page 29

and

Table "Domain Management Control RDR" on page 28

4.3.3.2.2

Connection State Sensor

This HPI sensor represents the status of the connection to a shelf. When the connection is
interrupted, an HPI event of type SAHPI_ES_OFF_LINE is generated. When the connection is
reestablished, an HPI event of type SAHPI_ES_ON_LINE is generated. An application can
access a shelf only when the state of this sensor is SAHPI_ES_ON_LINE. The definition of this
sensor is given in the following tables.

ResourceCapabilities

SAHPI_CAPABILITY_RESOURCE |
SAHPI_CAPABILITY_RDR |
SAHPI_CAPABILITY_CONTROL |
SAHPI_CAPABILITY_SENSOR

When the shelf is reachable:
SAHPI_CAPABILITY_DOMAIN

ResourceSeverity

SAHPI_MAJOR

DomainId

Domain Id when the shelf is reachable

IdString

Domain name

Table 4-5 Shelf Management Resource (continued)

SaHPIRptEntryT

Value

Table 4-6 Connection State RDR

SaHpiRdrT

Value

RecordId

Assigned by HPI

RdrType

SAHPI_SENSOR_RDR

Entity

The same entity as domain management resource

RdrTypeUnion

MOTHPI_SENSOR_NAME_DOMAIN_CONNEC
TION