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SEMI E58-0703 © SEMI 1997, 2003 21 component s that are also ARAM S compliant, such as clustertools. This data is used for event reports, to identify the original sour ce of the event. 11.2.1 EqpModel — A text string con…

SEMI E58-0703 © SEMI 1997, 2003

11.1 Status Information — Status data is information

that is maintained by equipment and in general cannot

be changed by the host. This section defines specific

elements of status data that the user is able to read upon

request and that may be included in event report

messages to the host.

1.17.3 A mechanism shall be provided for the user to

read these values.

1.17.4 All date/time values are text strings with a

timestamp format (see Section 4).

NOTE 16: The timestamp format is not a requirement for

clock precision.

NOTE 17: Subsequent references to subsections of 11.2

below are using the original numbers.

11.1.1 ARAMSInfo — Additional information set or

cleared by the equipment at the time an ARAMS state

transition occurs. Optional. Form: text. 0–80 characters.

11.1.2 ARAMSState — The ARAMS Substate Code

corresponding to the ARAMS state/substate that

became active following the most recent ARAMS state

transition. When an ARAMS state transition occurs,

ARAMSState is the specific code representing the new

ARAMS state/substate. It shall be retained as Class 4

data. The value of “0000” is prohibited. Form:

formatted alphanumeric text. 4 characters.

11.1.3 ARAMSText — The descriptive text

corresponding to the code in ARAMSState. Form: text.

5–80 characters.

11.1.4 Clock — Contains the current value of the date

and time at the equipment. When included in an event

report, Clock represents the timestamp for the

occurrence of the event. Clock may represent the

current value of a real-time date/time clock available

upon demand. Form: formatted text.

11.1.5 CycleCtr — The number of cycles (equipment

cycles) during the lifetime of the equipment (not

resettable). It shall be retained as Class 5 data. Form:

unsigned integer.

NOTE 18: See SEMI E10 for a formal definition of cycle.

11.1.6 DowntimeAlarm — Identifier of the most recent

alarm or exception triggering an equipment-initiated

transition to SCHEDULED DOWNTIME or

UNSCHEDULED DOWNTIME from the PRODUC-

TIVE or STANDBY states. This value is reset to zero

for all other ARAMS state transitions to indicate “no

associated alarm/exception”. Form: unsigned integer.

11.1.7 DowntimeAlarmText — Text associated with

DowntimeAlarm. This value is cleared (set to a zero-

length string) for all ARAMS state transitions except

the transition to SCHEDULED DOWNTIME or UN-

SCHEDULED DOWNTIME from the PRODUCTIVE

or STANDBY states. Form: text. 0–80 characters.

11.1.8 DowntimeData — Text associated with tran-

sitions to, or within, the SCHEDULED or UNSCHED-

ULED DOWNTIME states. For transitions following

powerup/reset (see Section 8.5.2), the value in Down-

timeData shall be set to “Power Loss”. This value is

reset to a zero length (empty) string for other ARAMS

state transitions. When associated with equipment initi-

ated transitions, this may be used to carry fault infor-

mation (e.g., the component serial number of a repaired

component, as defined by the equipment supplied).

When associated with operator-initiated transitions, it

may consist of comments entered at the equipment’s

control panel. Form: text. 0–256 characters.

11.1.9 LastPowerdown — Contains a date/time time-

stamp that estimates the time when the last loss of

power or reset occurred (Transition 11), based on the

value in PowerdownTime on powerup. It shall be

retained as Class 3 data. Form: formatted text.

11.1.10 PowerdownTime — Contains a date/time

timestamp used as an estimate for the timestamp for

loss of power or reset and used for reports associated

with ARAMS state Transition 11. It shall be retained as

Class 5 data. Form: formatted text.

11.1.11 PrdState — The ARAMS code corresponding

to the last user-specified ARAMS Substate Code for

PRODUCTIVE. Used as the default substate for

PRODUCTIVE. Initialized to “1000” at Transition 1.

Form: formatted alphanumeric text. 4 characters.

11.1.12 PrevARAMSState — The ARAMS code

corresponding to the ARAMS state/substate that was

active immediately preceding the most recent ARAMS

state transition. This value is useful for

resynchronization after a period of inability to

communicate. It shall be retained as Class 4 data. Form:

formatted alphanumeric text. 4 characters.

11.1.13 SymptomID — A numeric identifier of a

symptom selected by the user when requesting the

equipment to change states. A value of zero is

equivalent to a selection of “no symptom”. Form:

unsigned integer.

11.1.14 SymptomText — The descriptive text for the

symptom selected by the user when requesting the

equipment to change states. A zero-length string

corresponds to a selection of “no symptom”. Form: text.

0–80 characters.

11.2 Constant Data — Equipment shall provide and

maintain the following values as class 2 data. These

values are set by the equipment manufacturer and shall

not be changeable by the user. These data elements are

required for equipment with formally defined

SEMI E58-0703 © SEMI 1997, 2003 21

components that are also ARAMS compliant, such as

clustertools. This data is used for event reports, to

identify the original source of the event.

11.2.1 EqpModel — A text string containing the

equipment model. Form: 1–80 characters.

11.2.2 EqpSerialNum — A text string containing the

product serial number assigned by the supplier. Form:

1–80 characters.

11.3 User-Configurable Data — The data elements in

this section shall be settable by both the operator and

the host. They shall be retained as Class 3 data.

11.3.1 EngInterrupt (optional) — A Boolean value that

enables (TRUE) or disables (FALSE) equipment-

initiated transitions from ENGINEERING to

UNSCHEDULED DOWNTIME (Transition 14 in

Figure 2) when a fault condition is detected. This

variable is required if EngRecovery is supported. Form:

Boolean.

11.3.2 EngRecovery (optional) — A Boolean value

that enables (TRUE) or disables (FALSE) automatic

recovery returning to ENGINEERING from

UNSCHEDULED DOWNTIME (Transition 15 in

Figure 2) following an equipment-detected fault that

has spontaneously cleared. Form: Boolean.

11.3.3 EqpName (required) — A text string

representing the user-assigned logical name of the

equipment. Form: 1–80 characters.

NOTE 19: For OSS-compliant equipment, this corresponds

to the ObjID attribute of the object “Agent”, “PM”, “CM”, or

“TM” in other standards.

11.3.4 PowerupState (optional) — A text character

indicating the powerup (default entry) state when a

powerdown occurs during manufacturing time. May be

either “2” for STANDBY or “5” for UNSCHEDULED

DOWNTIME.

11.3.5 PrdRecovery (optional) — A boolean value that

enables (TRUE) or disables (FALSE) the equipment-

initiated return to PRODUCTIVE (Transition 6 in

Figure 2) following an equipment-detected fault that

has cleared without operator intervention. Form:

boolean.

11.3.6 SbyRecovery (optional) — A boolean value that

enables (TRUE) or disables (FALSE) the equipment-

initiated return to STANDBY (Transition 8 in Figure 2)

following an equipment-detected fault that has cleared.

Form: boolean.

11.3.7 SubstateSelect (optional) — A Boolean value

that enables (TRUE) or disables (FALSE) equipment-

initiated selection of substates of STANDBY and

PRODUCTIVE (including Transitions 12 and 13).

Form: Boolean.

11.4 Accumulators — This section defines a set of

optional accumulators that either count time in one of

the six basic SEMI E10 states or count interruptions

occurring in the PRODUCTIVE state. It shall be

possible for both the operator and host to (1) adjust the

values in the individual accumulators, and (2) reset all

seven values to zero simultaneously. Operator and host

assume responsibility for the edited values and their

accuracy. Equipment shall not impose restrictions on

the modified values.

1.17.5 In addition, two timestamps are required for

support of the accumulators. These timestamps shall not

be changed by the user.

1.17.5.1 Where accumulators are supported, the

variables defined in this section shall be supported as a

set as Class 4 data.

1.17.5.2 The time accumulators are reported in

minutes with an accuracy of ± one minute. Internal

representations of the accumulators in smaller units

may be required for short processes.

11.4.1 ARAMSAccumReset — The timestamp of when

the following seven accumulators were last reset to

zero. Form: formatted numeric text.

11.4.2 ARAMSTimestamp — The timestamp of the

most recent ARAMS state change to the state identified

in ARAMSState. This value is updated whenever a

transition to a new ARAMS state occurs and is used in

conjunction with PowerdownTime to update the

accumulators following a powerup or reset. Form:

formatted numeric text.

11.4.3 EngTime — Time in ENGINEERING.

11.4.4 InterruptionPrd — The number of transitions to

UNSCHEDULED DOWNTIME from PRODUCTIVE.

NOTE 20: This includes the equipment-initiated Transition 5,

a user-initiated transition covered by Transition 10, and the

powerdown Transition 11, when occurring from

PRODUCTIVE.

11.4.5 InterruptionTotal — The total number of

transitions to UNSCHEDULED DOWNTIME from

any state. This includes equipment-initiated transitions

and user-initiated transitions.

11.4.6 NSTime — Time in NON-SCHEDULED TIME.

11.4.7 PrdTime — Time in PRODUCTIVE.

11.4.8 SbyTime — Time in STANDBY.

11.4.9 SDTime — Time in SCHEDULED

DOWNTIME.

11.4.10 UDTime — Time in UNSCHEDULED

DOWNTIME.

12 Events and Pre-Defined Event Reports

1.18 Each transition in the ARAMS State Model, with

the exception of Transitions 2 and 11, represents a

unique collection event that shall be reportable to the

host. A generic collection event ARAMS State Change

shall be provided that corresponds to any ARAMS state

change. This allows greater efficiency for common data

to be placed in a single report.

1.19 The equipment shall support one of the two

following requirements:

• The capability of allowing the host to define

reports associated with each ARAMS state change

event, or

• A set of pre-defined (default) event reports for the

ARAMS State Change Event, equipment-initiated

transitions to UNSCHEDULED DOWNTIME

(Transitions 5 and 7, and Transition 1 as

appropriate), and user-initiated transitions to

UNSCHEDULED DOWNTIME.

1.20 The pre-defined reports, defined below, are

labeled “A”, “B”, and “C”, for ease of reference only.

Report “A” represents the information required for

every ARAMS State Change Event. Implementations of

these reports shall provide, at a minimum, the updated

values of the indicated variables.

Report “A”

ARAMS State Change Event

EqpModel

EqpSerialNum

EqpName

Clock

ARAMSState

PrevARAMSState

Report “B”

Equipment-Initiated Transitions to

UNSCHEDULED DOWNTIME Event

DowntimeAlarm

DowntimeAlarmText

DowntimeData

Report “C”

User-Initiated Transition

SymptomID

SymptomText

DowntimeData

13 Object Services Compliance

This section provides information required for

equipment that is OSS-compliant. OSS compliance is

not required for ARAMS compliance.

13.1 Equipment Object — ARAMS-compliant

equipment (equipment subsystems) that are compliant

to OSS (SEMI E39) and that provide an object

representing the equipment (equipment subsystems)

shall include as attributes of that object the attributes

listed in Table 6.

1.20.1 The data element Clock may be represented by

a Clock object. In this case, Clock is not an attribute of

the Equipment object but is a component of the

Equipment object and is accessible through OSS

services.

1.20.2 Table 6 defines the variables specified in earlier

sections as object attributes conformant with the

requirements of OSS. The column labeled “Access”

indicates whether the attribute is read-only (RO) or

read-write (RW), and the column labeled “Reqd”

indicates if the attribute is required for ARAMS

compliance.

Table 6 Table 6 ARAMS Object Attribute Definitions

Attribute Name Definition Access Reqd Form

ARAMSAccumReset Timestamp for when time-in-state accumulators were last

reset to zero. Required if accumulators are supported.

RO N Formatted numeric text:

timestamp format.

ARAMSInfo Additional information set by the equipment at the time of

an ARAMS state transition.

RO N Text. 0–80 characters.

ARAMSState Code corresponding to currently selected ARAMS

state/substate.

RO Y Formatted alphanumeric

text. 4 characters.

ARAMSText Descriptive text corresponding to code in ARAMSState. RO Y Text. 5–80 characters.