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SEMI E54.1-1000 © SEMI 1996, 2000 31 Upon receipt of a recover request, an AE object instance responds b y transitioning to its RECO VERED state if, and only if, it is currently in its ABORT state. Other wise, it respond…

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GetAttribute Service Message Definition Table*
Parameter Req/Ind Rsp/Conf Form Description
AttributeID M C**, = Network-
Specific
Attribute Identifier of attribute whose value is being requested.
Inclusion of attribute in Rsp/Conf. is optional.
AttributeValue - M Context-
Specific
Value of attribute requested.
* See Section 6.4.3 for further description of terminology used in this table.
** The determination of whether Attribute ID is supplied in the service response/confirm is outside the scope of this document.
7.4.1.2.6 SetAttribute — Used to modify the value of an object instance attribute over the network which has been
identified as modifiable. The following table describes the parameters specified for this service.
SetAttribute Service Message Definition Table*
Parameter Req/Ind Rsp/Conf Form Description
AttributeID M C, = Network-
Specific
Attribute Identifier of attribute whose value is to be modified.
Inclusion of Attribute in Rsp/Conf. is optional.
AttributeValue M C Context-
Specific
Value to which the attribute is to be modified. Inclusion of
Attribute in Rsp/Conf. is optional. Conditions under which the
value may differ from that supplied in the associated Req/Ind.
message (e.g., negative response) are not defined in this document.
* See Section 6.4.3 for further description of terminology used in this table.
7.4.1.2.7 RestoreDefault — Used to restore attributes of this object instance to their default values. The following
table describes the parameters specified for this service.
RestoreDefault Service Message Definition Table*
Parameter Req/Ind Rsp/Conf Form Description
Restore
Conditions
MCbyte,
enumerated
0 = Restore specific attribute of this object
1 = Restore all attributes of this object
2 – 63 = Reserved
64 – 255 = Application-Defined
AttributeID C C Network-
Specific
Attribute ID of the attribute whose value is being restored.
* See Section 6.4.3 for further description of terminology used in this table.
7.4.1.3 Active Element Class Behavior — The AE class behavior is illustrated in Figure 8. Associated states and
state transitions are described in Tables 33 and 34. The following also applies to AE class behavior:
An AE class service may be requested internally by the AE object instance.
Note that the behavior associated with the Reset, Abort, Recover, Operate, and Restore Default services differs from
the SAC object instance behavior in that no service requests are necessarily issued to any other object instances.
Upon instantiation or upon receipt of a reset request, an AE object instance responds by entering or staying in its
INITIALIZED state.
The object INITIALIZING application process is described as follows: When a request to initialize is received (e.g.,
through a Reset service request), all object instance attributes are restored to their initial value; the interpretation of
these values and how they are stored/retrieved is beyond the scope of this document. The object performs any
manufacturer-specified self tests and diagnostics to determine if it is qualified to enter the OPERATING state. Upon
completion of these tests, the appropriate Pass or Fail service response is reported to the requesting object instance.
The content, format, and protocol of this service response are specified by the network for requests made over the
network.
Upon receipt of an abort request, an AE object instance responds by entering or staying in its ABORT state.
SEMI E54.1-1000 © SEMI 1996, 200031
Upon receipt of a recover request, an AE object instance responds by transitioning to its RECOVERED state if, and
only if, it is currently in its ABORT state. Otherwise, it responds with an error indication.
The object RECOVERING application process is described as follows: Upon receipt of a Recover service request,
the object performs any manufacturer-specified self tests and diagnostics to determine if it is qualified to enter the
OPERATING state.
Upon completion, the appropriate Pass or Fail service response is reported to the requesting object instance. The
content, format, and protocol of this service response are specified by the network for requests made over the
network.
The AlarmEnable attribute determines whether or not alarms are reported through the ExceptionStatus and
ExceptionDetail attributes of the DM object (see Section 7.3). If the AlarmEnable attribute is set to the enabled state,
then any alarm is reported to the DM object instance upon its occurrence. The WarningEnable attribute works
analogously with respect to reporting a warning.
Additional behavior may be exhibited by an AE object instance that is defined elsewhere in its class generalization
hierarchy, or is device-specific. A complete definition of AE object type instance behavior includes the appropriate
sensor/actuator network specific device model specification.
Behavior associated with receipt of an invalid service request identified in this document applies to all services
required for this class. Unless otherwise specified (e.g., in an appropriate sensor/actuator network specific device
model specification), behavior associated with the receipt of an invalid service request for additional services
defined (elsewhere) for this class shall be the same as that for required services.
Figure 8
AE Class Behavior
NOTE: Only generic behavior is indicated in this chart. A complete state chart necessarily requires the inclusion of device-
specific behavior.
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Table 33 AE Class Behavior State Description
State Description
NORMAL
OPERATING
Object instance exists. Object services can be processed.
RUNNING This is the entry sub-state to NORMAL OPERATING. Object instance is not in its ABORT state.
INITIALIZED This is the entry sub-state to NORMAL OPERATING and RUNNING. Object instance exists and has been
initialized. All attributes set to appropriate initial values (as indicated in an appropriate sensor/actuator
network specific device model specification).
RECOVERED Object instance is in an abort recovered state.
OPERATING This represents the entire collection of sub-states within RUNNING except INITIALIZED and
RECOVERED. The further delineation of this sub-state and transition into this sub-state is outside the scope
of this document.
ABORT Object instance is in an aborted state and is not running any application process; a detailed description of
this state is outside the scope of this document.
Table 34 AE Class Behavior State Transition Matrix*
# Current State Trigger New State Action Comment
1 RUNNING Abort request. ABORT Abort. Abort response. ABORT state is device-specific.
2 ABORT Recover request. RECOVERED Recover. Recover
response.
RECOVERED state is device-
specific.
3 NORMAL
OPERATING
Reset request. RUNNING Reset. Reset response. Valid for all sub-states of NORMAL
OPERATING. Move to RUNNING/
INITIALIZED.
4 NORMAL
OPERATING
GetAttribute,
SetAttribute,
RestoreDefault.
NORMAL
OPERATING
Get Attribute, Set
Attribute, Restore
Defaults. Appropriate
Response.
Valid for all sub-states of NORMAL
OPERATING.
5 NORMAL
OPERATING
Invalid service
request.
NORMAL
OPERATING
Error response. Valid for all substates of NORMAL
OPERATING.
6 ABORT Abort request,
Operate request.
ABORT Error response. Invalid request in this state.
7 RUNNING Recover request. RUNNING Error response. Recover service can only be invoked
while in ABORT state.
8 INITIALIZING Operate request. OPERATING Device-specific. Behavior associated with this
transition may be further specified in
an appropriate sensor/ actuator
network specific device model
specification.
9 RECOVERED Operate request. OPERATING Device-specific. Behavior associated with this
transition may be further specified in
an appropriate sensor/actuator
network specific device model.
10 OPERATING Operate request. OPERATING Operate response. Object remains in the OPERATING
state. Additional behavior associated
with this transition may befurther
specified in an appropriate
sensor/actuator network specific
device model.
* NOTE: Only generic behavior is indicated in this table.
7.4.2 Sensor (S) Class — The S class at the second level of the active element generalization hierarchy contains
structure and behavior common to all sensing element instances in a device.