SAP Production Planning & Execution
Simulating Production Order
Dispatch in
the Graphical Display Planning Board
for Work Center with Shift
(Setup for Shift Sequence
and Leveling choices with
different Shift Dispatch Strategies combinations)
Shift Grouping is assigned to Work Center Capacity Header
Shift Sequence begins with the Shift Grouping for
defining
Shift Definitions for a Work Center
Define Shifts for a Work Center
Shift Grouping Z
Insert Interval
Note Shift Sequence “S2”
Shift Sequence is assigned with Shift Definitions
Day 1 is Monday with
Shift F-11 and S-11
Shift definitions defines the
Start-End time of a Shift
Note, the Break Schedule 002
which is 45 mintues
System automatically check the Shift-Definitions work time
06:00:00 to 14:00:00
to find what Break time in the Break Schedule is valid.
(in this case, Break time 1 & 2 will be used for F-11)
Break time 3 & 4 falls within the Start-End time of S-11, so this time is applied for the Shift automatically
Work Center WC0 is not assigned with any Shift Definition and uses the Capacity Header data as work times and break times
Work Center WC1
is
only assigned
with the F-11
Morning Shift
Work Center WC2
is
assigned
Shift F-11 and S-11
2 Shift
Work Center WC3
is
assigned
all 3 Shifts
Prod Version 0001
with Work Center WC1
with 1 Shift
Material FG
with Planned Order assigned to PV 0001
Work Center WC1
100 pcs /1 hours
use CM21 to Level the Planned Order to earliest date possible and Shift 1
Each Prod Order is 300pcs
Prod Time 3 Hours
Work Center WC1
is assigned with
Shift 1
06:00:00 to 14:00:00
8 hours
Set Scale
to “Daily Period Shift”
Select the Work Center and SWITCH on the Shift Calendar
Work Center WC1
is with
1 Shift
Set Dispatch Strategy for Shift Simulations (see next slides)
Basic
Finite + Forward Direction
Dispatch Order 1
(Finite + Forward Direction)
Order 1 Dispatch to beginning of Shift
Edit - Select Chart to select all Prod Orders and Dispatch
Hide Break Times to better view all Dispatched Operations to the Shift
Finite + Forward Direction
Orders Dispatch to start of current Shift but all Orders will Finite + Forward but Order can continue next shift
Basic
Finite + Backward Direction
Dispatch Order 1
(Finite + Backward Direction)
Order 1 Dispatch as the the Order Time and Finite - Backward Direction
Select an Order,
then
Edit - Select - Chart
(for Strategy
Finite - Forward Direction)
System Backward Direction until
Order cannot have Start Date in the Past
Last Planned Order in the list not possible to Dispatch due to will end up Start Date in the Past
check Planning LOG
System Backward Direction until
Order cannot have Start Date in the Past
Finite + Dispatch at Earliest Point in Time + Forward Direction
(Forward/Backward Direction is no longer relevant for this combination)
Dispatch
Finite + Earliest time + Forward Direction
Today
Next earliest date,
Shift tomorrow
beginning time
Dispatch the rest
From the first initial dispatch Order to the Earliest date, the rest of the Orders are Forward Scheduled from that order
Finite + Dispatch at Earliest Point in Time + Backward Direction
(Forward/Backward Direction is no longer relevant for this combination)
Dispatch 1st Prod Order
in this case
Finite + Dispatch Earliest + Backward
OR
Finite + Dispatch Earliest + Forward
will eb the SAME RESULTS
Dispatch the rest of the Prod Orders using
Finite + Dispatch Earliest + Backward
Dispatch the rest of the Prod Orders
Finite + Dispatch Earliest + Backward
OR
Finite + Dispatch Earliest + Forward
will eb the SAME RESULTS
Finite + Direction Forward
+ “Always adhere to period Split”
Dispatch the first Prod Order
Finite + Direction Forward
+ “Always adhere to period Split”
…
the first Prod Order Dispatched to the Beginning of the current Shift
Dispatch next 2 Prod Orders
Finite + Direction Forward
+ “Always adhere to period Split”
…
Each Prod Order starts beginning of Next Shift (result in One Order per Shift)
Dispatch the rest of the Orders
Finite + Direction Forward
+ “Always adhere to period Split”
…
Each Prod Order starts beginning of Next Shift (result in One Order per Shift)
Finite + Direction Backward
+ “Always adhere to period Split”
Finite + Direction Backward
+ “Always adhere to period Split”
Dispatch one Order
Finite + Direction Backward
+ “Always adhere to period Split”
…
Orders Dispatched backward from End Time of Each Shift
but only One Order per Shift
Finite + Direction Backward
+ “Always adhere to period Split”
Dispatch 3 more Orders
Remaining Order not able to Dispatch because Start Date cannot be in the Past
Finite + Direction Backward
+ “Always adhere to period Split”
…
Orders Dispatched backward from End Time of Each Shift
but only One Order per Shift
Remaining Order not able to Dispatch because Start Date cannot be in the Past
Finite + Direction Forward
+ “Operation completion in period Split”
Finite + Direction Forward
+ “Operation completion in period Split”
..
Dispatch the first Order
Finite + Direction Forward
+ “Operation completion in period Split”
Finite + Direction Forward
+ “Operation completion in period Split”
..
Dispatch the rend of the Orders
Finite + Direction Forward
+ “Operation completion in period Split”
..
3rd Order cannot start of the same shift as Order 1 and 2 as an Order Dispatched must finish on the same shift
Finite + Direction Backward
+ “Operation completion in period Split”
Finite + Direction Backward
+ “Operation completion in period Split”
Dispatch the first Order
Finite + Direction Backward
+ “Operation completion in period Split”
…
the first Order Backward Direction from today
Finite + Direction Backward
+ “Operation completion in period Split”
Dispatch the rest of the Orders
Finite + Direction Backward
+ “Operation completion in period Split”
…
all Orders Backward Direction until the final orders not allowed start date in the Past (also all Orders must start and finish on the same shift)
Backward Scheduling, last 2 Orders cannot be in the Past
Finite + Direction Forward
+ “Start search in plan direction”
+ “Split Shift by SHIFT”
Finite + Direction Forward
+ “Start search in plan direction”
+ “Split Shift by “SHIFT”
Dispatch Order 1
(note Order before dispatch
start and end on same shift)
Period Split is by “2” (Shift)
Operation time 10:41 - 14:00
The Operation should be Dispatched on 10:41
The system start search for remaining capacity forward direction at NEXT Shift (due to Period Split)
Finite + Direction Forward
+ “Start search in plan direction”
+ “Split Shift by HOUR”
Finite + Direction Forward
+ “Start search in plan direction”
+ “Split Shift by “HOUR”
Dispatch Order 1
(note Order before dispatch
start and end on same shift)
Period Split is by “2” (Shift)
Operation time 10:41 - 14:00
The Operation should be Dispatched on 10:41
The system start search for remaining capacity forward direction at NEXT HOUR (due to Period Split) .. .which is 11:00
Order Dispatched to Start at
11:00
Before Dispatch
Start time 10:41
Dispatched to
start at 11:00
(Start of the NEXT HOUR)
Before Dispatch
After Dispatch
Finite Scheduling
Forward Direction
Period Split “HOUR”
“Start search in plan.direct.” SET
now we dispatch the rest of the orders
with
Period Split “HOUR”
Start search in plan direction
Forward Direction
The next Order’s Operation time is 10:41 - 14:00, and so it will try to start next hour from 10:41 which is 11:00
(but at 11:00am, Order #1 was already dispatched for that time)
with Strategy:
Finite + Forward Direction
The next Order try to start next hour from its start time of 10:41 to 11:00am
BUT
11:00am slot already taken, so it has no choice but to schedule from end of the Order #1, the same goes for the rest of the Orders.
Strategy:
Finite + Forward Direction
Period Split “3” HOUR
“WITHOUT Start Search in plan direction”
…
Dispatch order 1
with dates
10:41 - 14:00
…
in this case
Order will be dispatched at 10:00
(beginning of the hour of the start time)
Before Dispatch
Start time 10:41
Dispatched to
start at 10:00
(Start of the HOUR)
Before Dispatch
After Dispatch
Finite Scheduling
Forward Direction
Period Split “HOUR”
“Start search in plan.direct.” NOT SET