what is the step for scheduling direction : forward and backward when refresh production order? thx
backward will shedule the production order from it’s due date and backward. (it sais when you should start to finish it on time, considering the lead time)
forward will schedule it, from the starting date in the PRoduction order header untill it is finished (tell you when is the expected finish date if you start now)
is that what you mean?
When i run Refresh on Production Order, it seems no different whether i choose Scheduling direction forward or backward. Do anyone have a case to show the difference between run Forward or backward?
Thx
Are you testing this in Cronus with an item or order? If you are can you tell us the item and the dates you are using? If not can you tell me the routing times and the options you are selecting on the refresh.
Yes, I’m testing in Cronus with an item.
BOM :
Type No. Description Quantity per Unit of Measure Code Scrap % Routing Link Code Production Lead Time Starting Date Ending Date
Item 1251 Axle Back Wheel 1 PCS 0
Item 1255 Socket Back 1 PCS 0
Routing :
| Operation No. | Previous Operation No. | Next Operation No. | Type | No. | Routing Link Code | Description | Setup Time | Setup Time Unit of Meas. Code | Run Time | Run Time Unit of Meas. Code | Wait Time | Wait Time Unit of Meas. Code | Move Time | Move Time Unit of Meas. Code | Fixed Scrap Quantity | Scrap Factor % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 20 | Work Center | 100 | 100 | Rim assembly | 60 | MINUTES | 5 | MINUTES | 0 | MINUTES | 0 | MINUTES | 0 | 0 | |
| 20 | 10 | 30 | Machine Center | 410 | Drilling | 60 | MINUTES | 8 | MINUTES | 0 | MINUTES | 0 | MINUTES | 10 | 0 | |
| 30 | 20 | 40 | Machine Center | 420 | Deburr | 20 | MINUTES | 9 | MINUTES | 0 | MINUTES | 0 | MINUTES | 0 | 0 | |
| 40 | 30 | 50 | Machine Center | 440 | 300 | Machine Inspection | 10 | MINUTES | 5 | MINUTES | 0 | MINUTES | 0 | MINUTES | 0 | 0 |
| 50 | 40 | Machine Center | 110 | Wheel assembly | 30 | MINUTES | 12 | MINUTES | 0 | MINUTES | 0 | MINUTES | 0 | 0 |
Backward :
| Item No. | Due Date | Description | Production BOM No. | Routing No. | Starting Date-Time | Ending Date-Time | Scrap % | Quantity | Reserved Quantity | Unit of Measure Code |
|---|---|---|---|---|---|---|---|---|---|---|
| 1250 | 1/25/2001 | Back Hub | 1250 | 1200 | 1/23/2001 12:51 | 1/24/2001 16:00 | 5 | 15 | 0 | PCS |
| 1251 | 1/23/2001 | Axle Back Wheel | 1/23/2001 12:51 | 1/23/2001 12:51 | 5 | 25.75 | 25.75 | PCS |
Forward :
| Item No. | Due Date | Description | Production BOM No. | Routing No. | Starting Date-Time | Ending Date-Time | Scrap % | Quantity | Reserved Quantity | Unit of Measure Code |
|---|---|---|---|---|---|---|---|---|---|---|
| 1250 | 1/25/2001 | Back Hub | 1250 | 1200 | 1/23/2001 12:51 | 1/24/2001 13:15 | 5 | 15 | 0 | PCS |
| 1251 | 1/23/2001 | Axle Back Wheel | 1/23/2001 12:51 | 1/23/2001 12:51 | 5 | 25.75 | 25.75 | PCS |
I can see there are difference between Forward Ending Date-Time and Backward Ending Date Time. But i don’t have idea where the time comes from?
HI Motion,
Have you ever looked at Time Machine? www.solution-soft.com
Could be the best forward and back date testing software available.
Regards,
SD