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SEMI E87-0705 © SEMI 1999, 2005 26 # Previous State Trigger Ne w State Actions Comments 4 ASSOCIATED Production equipment based carrier verification fails, and the carrier assumes the ID value from the carrie r that is o…
SEMI E87-0705 © SEMI 1999, 2005 25
Table 11 Load Port/Carrier Association State Transition Definitions
# Previous State Trigger New State Actions Comments
1 (no state) System reset. NOT
ASSOCIATED
No event report is required
for this transition
2 NOT
ASSOCIATED
Service Normal: If associated
by service in the noraml
situation, the host sends a
Bind service to the
production equipment when
the port is unoccupied.
Service Abnormal: If
associated with a service in
an abnormal situation, the
host sends a
ProceedWithCarrierService
to the production equipment
when the load port is
ocuupied.
CarrierID Read: If
associated by a CarrierID
read, the production
equipment creates the
association at the time the
CarrierID read is performed.
Known Carrier: A carrier
already known to the
production equipment is
being loaded onto the load
port. This happens when the
CarrierOut service is
initiated.
ASSOCIATED Once the CarrierID to load
port association is complete,
the load port is not available
for association until the state
returns to NOT
ASSOCIATED again.
Data required to be
available for this event
report:
PortID
CarrierID
PortAssociationState
3 ASSOCIATED Service: If cancellation of a
load port association is
required; then, this can be
accomplished by sending a
CancelBind service to the
production equipment before
the carrier arrives to the
loadport or before a transfer
sequence has started.
Carrier Unload: An
association cancellation may
also be performed by
removing the carrier from the
load port or by the production
equipment moving a carrier
to an internal buffer position.
NOT
ASSOCIATED
A carrier unload, may
happen before or after
processing occurs. The load
port is available for another
association once the carrier
is removed.
Data required to be
available for this event
report:
PortID
PortAssociationState
SEMI E87-0705 © SEMI 1999, 2005 26
# Previous State Trigger New State Actions Comments
4 ASSOCIATED Production equipment based
carrier verification fails, and
the carrier assumes the ID
value from the carrier that is
on the load port.
Internal buffer:
A carrier is unloaded and a
queued CarrierOut service
starts.
ASSOCIATED The existing carrierID
that was associated by
a Bind service is
unassociated by the
production equipment
and the new carrierID
is now associated to
the Load Port. The
production equipment
shall delay further
action until receiving
either a CancelCarrier
or a
ProceedWithCarrier
command from the
host.
This transition only occurs
when the Bind command
has been used.
Data required to be
available for this event
report:
PortID
CarrierID
PortAssociateState
14 Verification
14.1 Verification is the operation of comparing an actual value with an expected value. Verification may be
performed by either the host or the equipment, depending upon whether the host is using the Bind service or not.
14.1.1 If the host provides the expected value before the actual value is obtained by the production equipment, then
the production equipment shall perform the verification.
14.1.2 If the host does not provide the expected value, using the Bind service, before the actual value is read, then
the production equipment shall provide to the host, the information necessary for host based verification.
14.1.3 There are two values that are defined by Carrier Management that require verification: Carrier ID and Carrier
Slot Map.
14.2 CarrierID Verification
14.2.1 Table 12 defines the methods for verifying the Carrier ID.
Table 12 Carrier ID Verification Methods
Verification
Method Desired
Host Actions before
Load
Equipment Action When Carrier Is Loaded Host Actions after Load
Production
Equipment Based
Bind Service: The host
executes the Bind
service to associate a
load port and a
CarrierID.
Bind Service: The production equipment
reads the Carrier ID from the carrier,
compares it to the CarrierID supplied with the
Bind service.
Verification Passed: Transition 6 of the
Carrier State Model occurs. The production
equipment proceeds with processing.
Verification Passed: None.
Verification Failed: The equipment initiates
by itself a CancelBind and destroys the
carrier created with the “Bind” service and
instantiates a new carrier with the newly read
CarrierID. The carrier shall not be opened or
moved to an internal buffer in the production
equipment until and unless the
ProceedWithCarrier service is received from
the host.
Verification Failed: The host uses
either the CancelCarrier service to
force the carrier to the unload
position, or indicates to the
production equipment that it may
proceed with the unexpected carrier,
by sending the ProceedWithCarrier
service. In both cases the carrierID
specified in the service is equal to
the one determined by the carrierID
read.
SEMI E87-0705 © SEMI 1999, 2005 27
Verification
Method Desired
Host Actions before
Load
Equipment Action When Carrier Is Loaded Host Actions after Load
Carrier Notification
Service: The host
executes the
CarrierNotification
service to inform the
equipment of the
future arrival of a
carrier to an
unspecified port.
Carrier Notification Service: The production
equipment reads the Carrier ID from the
carrier, compares it to the CarrierID supplied
with a CarrierNotification service.
Verification Passed: Transition 6 of the
Carrier State Model occurs. The production
equipment proceeds with processing.
Verification Passed: None.
Verification Failed: Not Applicable; because
there is no association between a load port
and a carrier, equipment based verification
failure is not possible. If a carrier that has not
been instantiated arrives at a load port, the
equipment shall consider this as host based
verification.
Verification Failed: Not Applicable,
because there is no association
between a load port and a carrier,
equipment based verification failed
is not possible. If a carrier that has
not been instantiated arrives at a load
port, the equipment shall consider
this as host based verification.” The
host will respond with either a
ProceedWithCarrier or a
CancelCarrier Service. (See Host
Based verification method).
Host Based None required, the
host may issue a
ReserveAtPort service.
The production equipment reads the
CarrierID and reports it to the host in an event
report. Following carrierID read the
equipment initiates Transition 3 of the Carrier
State Model and a carrier object with the
carrierID equal to the one determined by the
carrierID read is instantiated. The carrier shall
not be opened or moved to an internal buffer
in the production equipment until and unless
the ProceedWithCarrier service is received
from the host.
Verification Passed: The host sends
a ProceedWithCarrier service
indicating the verification passed.
Verification Failed: The host uses
the CancelCarrier or
CancelCarrierAtPort service to force
the carrier to the unload position.
14.3 Slot Map Verification
14.3.1 Table 13 defines the methods for verification of the Carrier Slot Map. Some user’s factory operations may
not require strict management of the slot map. In this case the user may use the host based verification method.
Table 13 Slot Map Verification Methods
Verification
Method Desired
Host Actions Before
Verification
Equipment Action When
Carrier is Loaded
Host Actions After Load
Production
Equipment Based
The host provides a
Slot Map with the
Bind service or the
ProceedWithCarrier
service.
The production equipment
checks the carrier slot map
and compares it to the slot
map supplied by the host.
Either transition 13 or 14 of
the Carrier State Model
occurs.
Verification Passed: None, the production equipment
proceeds with the carrier.
Verification Failed: If the host decides to cancel
processing, the host issues the CancelCarrier service. If
the host decides to continue processing, the host issues
the ProceedWithCarrier service.