System Parameters (plsch0100m000)
Use this session to view and maintain the system parameters.
Field Information
- Introduction Date
- The date and time from when the parameters are valid.
- Description
- The description of the parameter set. For example, the reason for changing the parameters.
- Scheduler Parameters
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- Alternative Routing Parameters
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- Alternative Gain in Percentage
- The minimum percentage of time that is gained if an alternate route is considered in place of a to the scheduled route.
- Alternative Gain to Change
- The minimum time that must is gained if an alternate route is considered in place of a scheduled route.
- Alternative Gain to Change Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Alternative Routing Time Fence
- The time fence considered for shifting to alternate routes. If the scheduled start date of the current route is within the time fence, the route is not changed.
- Alternative Routing Time Fence Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Alternative Routing
- Synchronous Batching Parameters
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- Batching Forecasting Scope
- The number of Production order operations (associated with synchronous batching operations) the Synchronized Scheduling Engine considers simultaneously to calculate the available space to be filled in a machine.
- Batching Optimization
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Allowed values
- No machine capacity optimization
- Optimization without Knapsack
- Optimization with Knapsack
- Optimization with Extended Knapsack
- Batch in Time Fence
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If this check box is selected, the Synchronized Scheduling Engine cannot change – within the time fence – the sequence or the assignment of machines of Production order operations associated to synchronous batching operations.
- Batch Team
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If this check box is selected, a new work team is created for each batch. This parameter is used for Synchronous Batching process.
If this check box is cleared, one work team is used to produce all the batches of a Production order operations , thereby reducing the number of transactions that are created.
- Batching
- The parameter indicates the scheduling Production order operations in order to use the highest possible capacity for machines. When a batch is smaller than the minimum capacity of a machine, the Synchronized Scheduling Engine disciplines the machine. This parameter is used for Synchronous Batching process.
- Batching Whole Work Order
- This parameter is used to assign priority to batches that contain complete Production order operations (i.e. Production order operations that do not have to be split). This parameter is used for Synchronous Batching process.
- Same Employee for All Batches of PO Step
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This parameter indicates that same employee is scheduled to work on all batches created for a Production order operations. This parameter is not considered when the machine capacity is optimized (Batching Optimization is set to 1, 2 or 3). In that case, the Synchronized Scheduling engine determines the resources used to perform the task. This parameter is used for Synchronous Batching process.
To avoid problems, it is strongly recommended that you disable WGH_EmpSplitRespect (value = 0) when SCH_BatchingOptimization is set to 1, 2 or 3. The value of WGH_EmpSplitRespect must be a double precision; the default value is 0.
- Scheduling Scope and Forecasting Parameters
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- Allocation Scope for Customer Order Lines
- This parameter determines the number of customer order lines considered simultaneously in the scheduling scope.
- Forecasting Scope
- The number of Production order operations the Synchronized Scheduling Engine considers simultaneously, in order to select one step for scheduling.
- Second Forecasting Scope
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The number of Production order operations the Synchronized Scheduling Engine considers, in order to select one step for scheduling. This parameter is activated only if these parameters are set to a value greater than 0:
- Detailed schedule duration
- Compare Production order operations within this time period
When this parameter is activated, the Synchronized Scheduling Engine considers the First Forecasting Scope as the forecasting scope from the scheduled start date until the scheduled start date + the value of Period to Compare Production Order Steps + the value of Detailed schedule duration. After this time has lapsed, the Synchronized Scheduling Engine considers the second forecasting scope.
- Delivery Schedule Scope
- The number of Production order operations the Synchronized Scheduling Engine considers simultaneously, for a Delivery schedule.
- Detail Schedule Duration
- The duration of time based on which a detailed schedule is calculated.
- Detail Schedule Duration Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Cycle Time Defaults
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- Default Cycle Time
- The default cycle time used for Production order operations .
- Default Cycle Time Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Selected Date
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The parameter which defines whether the Synchronized Scheduling Engine calculates lateness by subtracting Levelled or Planned dates from the Scheduled dates.
Allowed values
- Planned Dates
- Leveled Dates
- Disable Stretching
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- Buffer Management
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- Apply Dynamic Buffer
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If this check box is selected, the dynamic buffer is activated.
- Dynamic Buffer Method
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If 0, the Scheduling Engine checks if there is a positive buffer defined at the machine level and applies that buffer to the MO step If I, the Scheduling Engine checks if there is a positive buffer defined at the item level, associated with the manufacturing order's Production order operations and applies that buffer to the Production order operations . If the buffer at item level is zero, the Scheduling Engine applies the machine buffer. If the machine buffer is zero as well, the global buffer is applied.
Allowed values
- Machine Level
- Item Level
- Minimum of Machine and Item Level
- Use Calendar for Dynamic Buffer
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If this check box is selected, the machine calendar is considered to calculate the dynamic buffer. Else, the 24 hours calendar is considered.
- Dynamic Buffer Duration
- The time duration for which dynamic buffer is not applied to Production order operations that have a planned start date (or leveled start date) within this period. This parameter value is calculated from the schedule start date.
- Dynamic Buffer Duration Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Default Dynamic Buffer
- The time period used to ensure that Production order operations are not scheduled too early or too late. This time is discounted from the planned start date (or leveled start date) and represents the earliest possible scheduled start date.
- Default Dynamic Buffer Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Transfer Management
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- Use Early Transfer Lot
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If this check box is selected, the system schedules the next operation as soon as possible.
If this check box is cleared, the downtime is minimized during the next operation.
- Max Transfer Lot
- This parameter defines the maximum number of transfer lots allowed for one Production order operations. All transfer lots are considered actual lots by the Synchronized Scheduling Engine, therefore a large value could potentially create many lots and reduce the scheduling speed.
- Resource Selection and Time Loss
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- Enable Time Loss on Resource Selection
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- Early Resource
- This parameter is used to balance the schedule, using availability dates for resources and scheduled start dates for Production order operations.
- Priority and Offset
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- Offset to Priority
- Offset to Priority Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Tolerance and Items
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- Tolerance factor for Items consumption
- Waiting Tolerance for Items
- This parameter defines the waiting tolerance for items. It is used in conjunction with the Load Forecast Receipts parameter.
- Waiting Tolerance for Items Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Granularity
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- Granularity
- The unit used by the Synchronized Scheduling Engine to round off time during calculations. The value specified for this parameter is the smallest unit of measurement for the scheduling dates.
- Granularity Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Time Fences
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- Manual Time Fence
- The time fence date (e.g. 02/27/2002 12:00:01 AM). The Synchronized Scheduling Engine cannot change the order of Production order operations before this date.
- Standard Time Fence Duration
- This parameter defines the duration calculated from the schedule start date to determine the time fence date. This date changes every time a schedule is calculated.
- Standard Time Fence Duration Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Inactivity Periods
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- Minimum Duration of Inactive Periods
- This parameter defines the minimum time period for which inactive periods are stored by the Synchronized Scheduling Engine. Only the periods with a duration greater than or equal to the value of this parameter are stored.
- Inactive Period Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Use Inactivity Periods
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If this check box is selected, the Synchronized Scheduling Engine uses inactive periods for the calculation of a Global Delivery schedule.
- Perishability Parameters
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- Perish Interval Between Operations
- Time unit for Perish Interval Between Operations
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Perish Interval within Operation
- Time unit for Perish Interval within Operation
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Team and Calendar Constraints
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- Compress / Expansion
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If this check box is selected, the compression/expansion algorithm is applied to planned dates for the next complete schedule.
- Earliest starting time for Postponed Production orders
- The earliest time by when the processing of the Production orders or a Production order operations with status Postponed can be started.
- Unit Earliest starting time for Postponed Production orders
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Period to Compare Production Order Steps
- This parameter allows the engine to consider the earliest scheduled start date of the Production order operations currently in the scope and reject the ones that are not within the timeframe set by the parameter.
- Period to Compare Production Order Steps Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Period to Select Work Team
- This parameter is used to indicate the number of hours for which a Production order operations can wait before being started by a work team. This implies that the first available work team is not necessarily assigned to this Production order operations . If a more qualified team is available before the lapse of the time specified in this field, the team is assigned to the pending Production order operations. If a work team completes the step/task after the Production order operations 's planned end date and after the number of hours specified in the Period to Select Work Team field, the Synchronized Scheduling Engine does not consider the work team for scheduling.
- Time Unit to Select Work Team
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Multiple Quality Team Evaluation
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If this check box is selected, the scheduler evaluates the QT-Night-Shift qualified team and schedules a work team for the night shift. If this check box is cleared, the work team is scheduled the next morning. By default, the check box is cleared.
This parameter is used to re-evaluate the best qualified team for a Production order operations at each work shift change. For example: A machine (M1) is allowed to run on a day shift and a night shift. Therefore, two qualified teams (QT) can be assigned on a same operation. QT-Day-Shift Machine: M1, M2, M3 Employee: Day1 QT-Night-Shift Machine: M1 Employee: Night1 Suppose a Production order operations has been scheduled to start during the day on the M1 machine and has not been completed by the end of the day.
- Number of Qualified Teams
- This parameter is used to indicate the number of qualified teams selected by the Synchronized Scheduling Engine for re-evaluation. The engine selected the best team for a Production order operations.
- Resource Collision
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If this check box is selected and a schedule is calculated, the Synchronized Scheduling Engine checks the setup state for every Production order operations in the synchronization scope. The engine schedules the steps with same setup state together to save setup time.
This parameter is used to reschedule Production order operations in an environment herein resource availability changes constantly because of multiple setup states. By default, this check box is selected.
- Round Quantity to Process on Work Team
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This parameter is used to indicate if the quantity to process for work teams is rounded off.
- Schedule Constraints
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- Generate Schedule Constraints
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This parameter is used to determine if the Synchronized Scheduling Engine generates a list of schedule constraints for Production order operations . The applicable schedule constraints are displayed in the Production order operations 's record.
- Maximum Number of Displayed Schedule Constraints
- This parameter determines the maximum number of schedule constraints that are displayed for a Production order operations.
- Consider Employee Shift as a Constraint
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If this check box is selected, an employee is considered a constraint for a schedule when:
- The employee is on holiday,
- The employee is occupied at other tasks,
- The start time of the work shift does not allow the employee to start work immediately.
If this check box is cleared, the employee is considered a constraint when on holiday or occupied with other tasks. When set to True.
- Forecast Receipt and Production Recommendations
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- Load Forecast Receipts
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- Include Recommended Production Orders
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- Scheduling Data Validation and Tries
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- Max Number of Tries
- The maximum number of times the engine schedules a specific Production order operations or indivisible Production order operations .
- Weight Parameters
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- Consistent Dispatching
- The value indicating the extent to which the Synchronized Scheduling Engine can use consistent dispatching. The number indicates how the Synchronized Scheduling Engine can distribute production order operations equally, among the selected resources.
- Minimize Cycle Time
- This value indicating the importance of reducing cycle time when a Production order operations is selected in the forecasting scope.
- Respect of Gradation (Machine)
- The value indicating the importance of gradation order in a setup class for a machine when selected it for a specific Production order operations.
- Respect of Gradation (General)
- The value indicating the importance of the gradation order in a setup class when a Production order operations is selected from the forecasting scope.
- In Process Production Order Steps
- The value indicating the importance of scheduling In Process Production order operations.
- Just-in-Time Production
- Machine and Tool Split Respect
- The value indicating the importance of respecting on-time production and reducing the delay when a production order is selected in the forecasting scope. Consequently, the Synchronized Scheduling Engine first schedules the Production order operations that are late.
- Steps of Same Production Order
- The value indicating the importance of scheduling production orders that are in progress, when the first Production order operations in the manufacturing order has been scheduled.
- Planned Start Date
- The value indicating the importance of scheduling Production order operations with the earliest planned start dates.
- Machine Production Rate
- The value indicating the importance of the production rate when a machine is selected for a specific Production order operations. The Synchronized Scheduling Engine uses the machine with the best possible production rate for an operation.
- Resources on Same Machine
- Steps of Late Production Orders
- The value indicating the importance of scheduling Production order operations that are late when a Production order operations in the forecasting scope is selected. The weight depends on the priority assigned to the manufacturing order.
- Same Resource on Same Parallel Work Team
- The value indicating the importance of minimizing the change of tools and employees in parallel work teams, when using the same machine. This value must be smaller to ensure that the same employee and tools are used.
- Minimize Setups (General)
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The value indicating the importance of reducing setup time when selecting a Production order operations from the forecasting scope. Production order operations are rated in proportion to the setup times. The value of this parameter must be increased to minimize setup times.
Note: Similar weights can be defined for setup classes and resources.
- Minimize Setups (Machine)
- The value indicating the importance of reducing setup times when selecting a machine for a specific Production order operations.
- Reduction of Time Losses
- The value importance the importance of reducing time loss when selecting Production order operations for scheduling.
- Using Same Following Resources
- The value indicating the importance of keeping the same Following resource when a resource is selected for a Production order operations. The lower the value of this parameter, the more likely that Synchronized Scheduling Engine uses the same Following resource for the subsequent Production order operations.
- Late Batch Duration
- Late Batch Duration Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Production Order Step Max Duration
- Production Order Step Max Duration Unit
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Allowed values
- Seconds
- Minutes
- Hours
- Days
- Weeks
- Use Last Indivisible operation as Reference
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- Use Setup Work Team for Perish between Operations
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- Use Setup Work Team for Perish within the operation
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- Schedule Divided Score
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- Use of Following Resources
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- Use Machine Calendar
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