| Assembly Line - Assignments and Line Stations (tiasc5520m000)Use this session to display the assembly assignments linked
to a line station. This data is defined in Line Assembly Control (LAC), where
the data is referred to as the Line Station Level Assignment. Assembly Line A set of consecutive line stations in which FAS (Final Assembly
Schedule) items are manufactured. The items are manufactured by passing the
items from line station to line station and by carrying out operations at each
line station. An assembly line is subdivided into a number of line segments
separated by buffers. An assembly line can be either a main line or a supplying
line. Line Station A work center that is part of an assembly line. A line station
is used in the production of FAS (final assembly schedule) items. A line
station can have multiple positions, which enables more than one item to be
present in one line station. Assignment The set of resources assigned to an assembly line for a
particular period of the day. The resources are divided over the line stations
to create a balanced line. Assignments are defined for an assembly line. For each
assignment, you specify the cycle time and its activity ranges, which are the
period and time ranges for which the assignment is effective. The process
characteristics that you define for an assignment include: - Man occupation
- Machine occupation
- Work team
- Operations
These process characteristics are linked to other assignments
that are, in turn, linked to the assembly assignment. When an assignment is in
effect, the assignments that are linked to it are also in effect. Two types of assignments exist, both of which exist at the
same time. The average assignment is used for more general purposes, whereas
the nonaverage assignment has a very specific period and time range. Average assignments Use an average cycle time that is based on the cycle times
of the nonaverage assignments for the day. The average assignment is used in
planning. Planning is based on cycle time, calendar, and availability type. Nonaverage assignments Use time-based cycle times that are based on the
operations performed on the line. The cycle time can vary according to the time
range that is provided for the assignment. Nonaverage assignments are used to define order content.
For generated (nonfrozen) orders, the order content is based on the first
active, nonaverage assignment. For frozen orders, the order content is based on
the nonaverage assignment that is in effect at the time that the order is
frozen. Nonaverage assignments are also used to offset the lead
time during sequencing. When the order is sequenced, a lead time is calculated
for every order. This lead time is based on the cycle times, and the applicable
cycle time is retrieved from the nonaverage assignment.
Note An average cycle time is not a mathematical average, but is a
value that you consider to be a suitable average for the nonaverage cycle times
over the course of a full day. MachineOccupation The number of machines being used at the line station for this assembly assignment. Number ofCycle Times The time required to process one assembly order in the line
station, for this assignment. The time is expressed as a number of cycles. For
instance, if the cycle time is two minutes, ten minutes is
expressed as five cycles. | |