SEMI E105-1000 PROVISIONAL SPECIFICATION FOR CIM FRAMEWORK.pdf

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SEMI E'105-1000
PROVSIONAL SPECFCATON FOR CM FRAMEWORK SCHEDULNG
COMPONENT
ification was technically
d by the Global Information & Control Committee and is the direct
responsibility of the North American In formation Control Committee. Current edition approved by the
NorthAmcricanRcgionalStandardsCommittcconAugusl28,2000Initiallyavailablcalwww.scmi.org
Scptcmbcr 2000, to bc published October 2000
components of the CIM Framework. This illustration
1 Purpose
does not reflect all of the many inputs to the Scheduling
he Scheduling Component supports Factory
Component that are required to provide it with the
Operations, Material Transport and Storage, Production current status of the factory resources
Machine, and Equipment Tracking and Maintenanc
2.2 As described in this standard, the Scheduling
components by ordering, in time, jobs that p
Rocess
Component produces activity option and activit
on equlpment, move material, and maintain forecast lists. These lists are produced by combining
the factory model and status information from other
demand, equipment and material state, process flows,
throughput bottlenecks, operational policy and
components with scheduling policies in the Scheduling
Component. For example, the Scheduling Componen
constraints, and other information to recommend jobs
combines data from the Specification Component on
that maximize effective utilization of factory resources how products are made with status data from the
to satisfy product demand and planned objectives
Equipment and Product Management Components to
1.2 Increased control over operations requires an give activity options for a machine
active Scheduling Component that can respond
2.3 The Factory Operations Comp onent uses the
factory events and changes in state and dynamica
ally Scheduling Component services to orchestrate the man
adjust the schedules for material processing, material
agement of machines and production of lots. For exam
transport and equipment maintenance. The Schedulin
ele, when a tool becomes available, Factory Operations
Component can react to inventory levels of material in
uses the Activity Options list to select the next lot to
the factory to adjust priorities to minimize queue sizes
process on the tool. Factory Operations then works
and ensure that use of bottleneck equipment is opti
with other components to execute the production job for
mized to keep WTP inventory levels at desired levels
the lot on the machine. Executing the production job
3 The Scheduling Component can minimize turn changes the state of lot and tool in other components
around time(TAT)by coordinating material transport These status changes are then used by the Scheduling
( for substrates and durables )with processing to reduce Component when it produces new activity lists
equipment idle time. The Scheduling Component can
2. 4 The Scheduling Manager supp orts Factory
sequence activities to minimize setup tim
can aso
Operations by providing an answer to questions like
respond to scheduled and unscheduled equipment What is next for this material or resource? The
down-time to minimize impact on turn around time. In
answer may be based on evaluation of current or future
addi