Sequence Shop Order Operations
Explanation
This activity is used to schedule shop order operations in sequence after each others from a given start
date/time and to minimize the total setup time.
To perform this activity from the:
- Shop Floor Workbench page, select the operations to be sequenced, click
Scheduling and Planning and then click Sequence Operations.
- Shop Order Operations page, select the operations to be sequenced, click
Scheduling and then click Sequence Operations.
To perform this activity from the Machine Operations Scheduling chart:
- To sequence all operations for a resource or work center loaded in the Gantt chart, open the card for the
resource or day and click Sequence.
- To sequence all operations for a resource or work center on one or several days, select the relevant day(s)
for the resource and click Sequence.
- To sequence specific operations, select the relevant operations and click Sequence.
In the first assistant step, enable the Include option for the operations so sequence.
Optionally, enter an Operation Priority for the operations.
In the second assistant step:
- Enter the characteristic codes you want to base the sequencing order on in the Characteristics for
Sequencing Order list.
If a Sequencing Priority has been set for any characteristic codes on the Work
Center/Characteristics tab, those will be appear automatically.
- In the Preferred Resource field, select the resource on which you want the operations to be
scheduled.
- In the Start Date/Time field, enter the date and time on which you want the first operation
to be scheduled to start.
- If you want to avoid slack between operations preceding the sequenced operation on the same shop order when
rescheduled to a later date/time, enable Compress Operations.
- If you want to schedule setup according to the characteristic value combinations, enable Use Setup
Matrix.
- If you want operation blocks to be created and connected to operations sharing the same characteristic value,
enable Create Operation Blocks.
Prerequisites
- Shop order operations must belong to the same work center.
- The status of the shop order operations cannot be Cancelled or Closed.
- The Schedule Direction of the shop order operations cannot be Manual
Scheduling.
- The site should not use constraint based scheduling server.
- To create operation blocks, two or more of the operations cannot belong to the same shop order.
- To base the sequencing order on characteristic code(s), they must have been entered on the Work
Center/Characteristics tab.
- To automatically default the characteristic code(s) to use for sequencing, the Sequencing
Priority field should have a value for the characteristic code(s) on the Work
Center/Characteristics tab.
- To use the setup matrix, the Enable Setup Matrix option must be enabled in Work
Center/Characteristics tab for at least one of the characteristic codes entered in
Characteristics for Sequence Order list.
- An operation cannot have a lower operation priority value relative another included operation from the same
order with lower operation sequence number. I.e., operation priority cannot be used to change the order of the
operations within an order.
System Effects
- The Schedule Direction for the included operations will be set to Forward
Scheduling and scheduled sequentially of each others with the first operation starting on the start
date/time provided in the assistant. Operations will be ordered following below priority:
- Priority and Sort Order defined in the
Characteristics for Sequence Order list.
- Operation Priority defined in Operations to
Sequence list. Operations with a lower value are scheduled before operations with a higher value.
- Operation original Planned Start Date/Time. Operations with an
earlier original planned start date/time are scheduled before operations with a later start date/time.
- The preferred resource selected in the assistant will be set as the preferred resource for the operations. If
this work center resource is available, operations will be scheduled on it.
- Operations parallel to, and succeeding the rescheduled operations will also be set to Forward
Scheduling and rescheduled.
- If Compress Operations is enabled, and the new date/time for the rescheduled operation is
later than the original date/time, operations on the same shop order preceding the rescheduled operation will be
set to Backwards Scheduling and rescheduled with a Finish Date adjacent to the
rescheduled operations new Start Date.
- If Setup Matrix is enabled, all except the first operation will be scheduled with a setup
time fetched from the Work Center/Characteristics tab considering the combinations for
the characteristic codes entered in the Characteristics for Sequence Order list. If several
characteristic codes have a setup matrix defined, the longest setup time will be used.
- If Create Operation Blocks is enabled, an operation block will be created and connected to
all operations sharing the same characteristic values for the characteristic codes entered in the
Characteristics for Sequence Order list. If no characteristic codes have been entered, or the
operations does not have any value for them, an operation block will be created and connected to all those
operations.
- If any of the operations are already connected to an operation block, they will be disconnected from it. If
this leaves the block with no operations connected to it, the block will be deleted.