Rockwell Automation FactoryTalk Scheduler Users Guide - Manual (Page 107)

A • G LOSSARY
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Primary Resource—a resource that is specified as a primary resource at a work cell.
Every work cell has a primary resource that is always seized and held for the duration
of an operation. The primary resource may also be carried across multiple operations.
Process Plan—a generic plan for manufacturing material in a facility. It is associated with
a material and is independent of any specific order for the material. It is comprised of
a collection of job segments that defines the sequence and ordering of work required
to manufacture the material. A process plan may define a simple flow through a linear
sequence of job segments, or it may be a complex flow involving multiple and parallel
job segments that are combined at an assembly job step.
Process Segment Data—segment data for a job segment that is product independent. For
example, the same machine attendant may be used at a work cell, independent of the
material/product being produced. In this case, the machine attendant can be specified
as process segment data. Segment data may include phase times, resource
requirements, material actions, and constraints.
Processing Phase—the second of three phases in an operation.
Product Segment Data—segment data for a job segment that is product dependent. For
example, the setup time on a machine may change from one job to the next; and in this
case, the setup time is product segment data. Segment data may include phase times,
resource requirements, material actions, and constraints.
Production Lot—a unit of work that is associated with a manufacturing order. In some
cases, multiple production lots are associated with a manufacturing order. Production
lots move from operation to operation and may be combined at assembly operations.
A production lot can be a single item or a batch of items that move together through
the facility. A production lot may correspond to subassemblies and component parts
that are produced to inventory or feed assembly operations or may correspond to final
product.
Reorder Policy—a policy for replenishing the supply of a material when the unallocated
quantity of that material falls below a certain level (referred to as the Reorder Point).
Resource—a generic term for equipment, labor, fixtures, racks, tools, and other items that
may restrict the flow of work at a work cell.
Resource Busy Cost—the cost accrued per unit time for an allocated resource. This cost
accumulates during the setup, processing, and teardown phases of an operation. This
cost value is used to compute activity-based costing (ABC) for the production lots.
Resource Capacity—specifies the number of identical and interchangeable units of a
pooled resource. The resource capacity can be specified either as a number or it can
follow a predefined schedule.