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SEMI E54.10-0600 © SEMI 2 000 16 Table 18 Sensor-A I and Sensor-AI-MNS Object A ttributes Initial and Default Values Attribute Initial Value Default Value Comment Valu e 0 0 Gain LVV 1 .0 Data Type LVV UINT Data Units LV…

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SEMI E54.10-0600 © SEMI 200015
not in the EXECUTING state, the value of the “Reading Valid” attribute shall be set to “Invalid”. When in one of
the sub-states of the EXECUTING state, the validity of the “Value” attribute shall be manufacturer specific.
8.7 Sensor-AI-MNS Object — The Sensor-AI-MNS (Median Noise Sensor) object inherits the attributes, services,
and behavior of the Sensor-AI as defined in SEMI E54.1 [3]. The Sensor-AI-MNS is the device component
responsible for retrieving a reading from a physical median noise sensor, optionally correcting the reading with a
manufacturer specified algorithm, or algorithms, then making the value available through the “Value” attribute.
8.7.1 Sensor-AI-MNS Object Attributes — The attributes provided by the Sensor-AI object are defined in SEMI
E54.1 [3]. The Sensor-AI object attribute content and its attribute extensions to support the Sensor-AI-MNS object
is listed in Table 17.
Table 17 Sensor-AI and Sensor-AI-MNS Object Attributes
Attribute Name Attribute Identifier Access
Network
Required Form
Value SaiA16 R Yes UINT
Gain SaiA65 R Yes REAL
Data Type SaiA66 R Yes USINT
Data Units SaiA67 R Yes Enumerated, UINT
milliVolts only value supported
Reading Valid MnsA1 R Yes Enumerated, Byte
Full Scale MnsA2 R Yes UINT
Alarm Settling Time MnsA3 R Yes UINT
Warning Settling Time MnsA4 R Yes UINT
Reserved MnsA5–MnsA64 — — Reserved for future expansion.
Manufacturer Specified > MnsA64 — — Manufacturer Specific attributes
8.7.1.1 Value — The attribute that maintains the median noise sensor value. This is the noise level at the output of
the sensor amplifier. The value is calculated by taking the median value of the last manufacturer specific number of
rolling samples of the sensor amplifier output. This value is always read as milliVolts.
8.7.1.2 Gain — The attribute that specifies the gain of the median noise measuring circuit.
8.7.1.3 Data Type — The attribute which defines the format of the data associated with the “value” attribute.
8.7.1.4 Data Units — The attribute which specifies the units for the “Value” attribute. This attribute is an
enumerated UINT and can take only one value:
MilliVolts (as assigned in Appendix 1 of SEMI E54.1).
8.7.1.5 Reading Valid — An attribute which specifies whether the “Value” attribute contains a valid value. This
attribute is an enumerated byte that can take on one of the following values:
0 = Invalid, or
1 = Valid.
8.7.1.6 Full Scale — An attribute which specifies the maximum value allowed for the “Value” attribute.
8.7.1.7 Alarm Settling Time — An attribute which specifies the maximum time in milliseconds that the “Value”
attribute may take to stabilize before an alarm is generated.
8.7.1.8 Warning Settling Time — An attribute which specifies the maximum time in milliseconds that the “Value”
attribute may take to stabilize before a warning is generated.
8.7.1.9 Initial and Default Values
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Table 18 Sensor-AI and Sensor-AI-MNS Object Attributes Initial and Default Values
Attribute Initial Value Default Value Comment
Value 0 0
Gain LVV 1.0
Data Type LVV UINT
Data Units LVV MilliVolts See Appendix 1 of SEMI E54.1.
Reading Valid 0 0 Invalid
Full Scale LVV 0XFFFF
Alarm Settling Time LVV 1000 Milliseconds
Warning Settling Time LVV 1000 Milliseconds
8.7.2 Sensor-AI-MNS Object Services — The services provided by the Sensor-AI-MNS object are inherited from
the Sensor-AI object defined in SEMI E54.1 [3]. There are no additional services required for the Sensor AI-MNS
object.
8.7.3 Sensor-AI-MNS Object Behavior — The behavior exhibited by the Sensor-AI-MNS object is inherited from
the Sensor-AI object defined in SEMI E54.1 [3]. Additional specific behavior associated with the Sensor-AI-MNS
object is defined below.
8.7.3.1 Sensor-AI-MNS OPERATING Application Process — A reading is retrieved from the physical median
noise sensor. This reading is maintained in a rolling count of manufacturer specified samples and then the median
value of the manufacturer specified samples is calculated. This median reading becomes the input to the gain
formula to generate the value attribute as referenced in SEMI E54.1 [3]. This process is executed only when the
Device Manager Object is in the EXECUTING state as defined in SEMI E54.1. When not in the EXECUTING
state, the value of the “Reading Valid” attribute shall be set to “Invalid”. When in one of the sub-states of the
EXECUTING state, the validity of the “Value” attribute shall be manufacturer specific.
8.8 Sensor-AI-Counter Object — The Sensor-AI-Counter object inherits the attributes, services, and behavior of
the Sensor-AI as defined in SEMI E54.1 [3]. The Sensor-AI-Counter is the device component responsible for
maintaining a count of the number of particles deposited in each bin and then making the value available through the
“Value” attribute.
8.8.1 Sensor-AI-Counter Object Attributes — The attributes provided by the Sensor-AI object are defined in SEMI
E54.1 [3]. The Sensor-AI object attribute content and its attribute extensions to support the Sensor-AI-Counter
object is listed in Table 19.
Table 19 Sensor-AI and Sensor-AI-Counter Object Attributes
Attribute Name Attribute Identifier Access Network Required Form
Value SaiA16 R Yes UDINT
Data Type SaiA66 R Yes USINT
Data Units SaiA67 R Yes Enumerated, UINT
Reading Valid CounterA1 R Yes Enumerated, Byte
Full Scale CounterA2 R Yes UDINT
Alarm Settling Time CounterA3 R Yes UINT
Warning Settling Time CounterA4 R Yes UINT
Upper Size CounterA5 RW (See NOTE 1.) Yes REAL
Lower Size CounterA6 RW (See NOTE 1.) Yes REAL
Reserved CounterA7–CounterA64 — — Reserved for future expansion.
Manufacturer Specified > CounterA64 — — Manufacturer Specific attributes
NOTE 1: Consult the manufacturer’s specification for specific “Write” capabilities of this attribute.
8.8.1.1 Value — The attribute that maintains the particle count in the bin.
SEMI E54.10-0600 © SEMI 200017
8.8.1.2 Data Type — The attribute that defines the format of the data associated with the “Value” attribute.
8.8.1.3 Data Units — The attribute which specifies the units for the “Value” attribute. This attribute is an
enumerated UINT that can take on one of the following values: raw counts, count per second, counts per milliliter,
and counts per gallon. (See Appendix 1 of SEMI E54.1.)
8.8.1.4 Reading Valid — An attribute which specifies whether the “Value” attribute contains a valid value. This
attribute is an enumerated byte that can take on one of the following values:
0 = Invalid, or
1 = Valid.
8.8.1.5 Full Scale — An attribute which specifies the maximum value allowed for the “Value” attribute.
8.8.1.6 Alarm Settling Time — An attribute which specifies the maximum time in milliseconds that the “Value”
attribute may take to stabilize before an alarm is generated.
8.8.1.7 Warning Settling Time — An attribute which specifies the maximum time in milliseconds that the “Value”
attribute may take to stabilize before a warning is generated.
8.8.1.8 Upper Size — An attribute which specifies the upper bound of the particle size, in microns, included in the
bin counts.
8.8.1.9 Lower Size — An attribute which specifies the lower bound of particle size, in microns, included in the bin
counts.
8.8.1.10 Initial and Default Values
Table 20 Sensor-AI and Sensor-AI-Counter Object Attributes Initial and Default Values
Attribute Initial Value Default Value Comment
Value 0 0
Data Type LVV UDINT
Data Units LVV 0 Raw counts
Reading Valid 0 0 Invalid
Full Scale LVV 0XFFFFFFFF
Alarm Settling Time LVV 1000 Milliseconds
Warning Settling Time LVV 1000 Milliseconds
Upper Size LVV Manufacturer Specified Manufacturer Specific
Lower Size LVV Manufacturer Specified Manufacturer Specific
8.8.2 Sensor-AI-Counter Object Services — The services provided by the Sensor-AI-Counter object are defined in
SEMI E54.1 [1]. There are no additional services required for the Sensor AI-Counter object.
8.8.3 Sensor-AI-Counter Object Behavior — The behavior exhibited by the Sensor-AI-Counter object is inherited
from the Sensor-AI object defined in SEMI E54.1. Additional specific behavior associated with the Sensor-AI-
Counter object is defined below.
8.8.3.1 Sensor-AI-Counter OPERATING Application Process
8.8.3.1.1 A reading is retrieved from the physical median noise sensor. This reading is filtered through an analysis
of a manufacturer specified number of samples. The value attribute is set to this processed reading. This process is
called “counting” and is executed only when the Device Manager Object is in the EXECUTING state as defined in
the Common Device Model.
8.8.3.1.2 Whenever an Interlock alarm, Sensor Not Detected alarm, Leak Detected alarm, and Sensor Type Change
alarm is active the ISPM device shall stop “counting” until the alarm clears (see Section 8.2).
8.8.3.1.3 The ISPM is a device that measures and counts particles. As part of counting, particles are classified by
size and count and accumulated in bins over time intervals then reported. The number of bins varies by vendor and
device model.