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George Moroses

Infor LX & BPCS Manufacturing Tip of the Week: Backward Scheduling

Operations are automatically backward scheduled at shop order release time. The backward scheduling algorithm starts with the shop order due date and schedules each operation based upon the standard move and queue times in the routings and the number of days the job is expected to run at standard. The system calculates and stores the operation scheduled start date. The dates may be modified by the shop order maintenance program. The number of days that a job is expected to run an operation is dependent upon the available capacity for that work center and the total hours scheduled for that operation.

The backward scheduling algorithm also considers the shop calendar for weekends, shutdowns, holidays, and partial days.

Backward Scheduling Process

The algorithm starts with the due date of the shop order or planned order. The system makes the following calculations for each operation in the reverse sequence:

  1. The number of move days is subtracted from the due date (or initial date of the previous operation) to get the due date for this operation. The move days are only used on valid shop calendar days.
  2. The system uses the following calculation for the number of clock hours for the operation: Standard run or machine hrs/No. of operators + setup hours
  3. The number of clock hours is spread over the available daily capacity of the work center for those given days. The system uses the following calculation for the daily capacity of the work center: Number of shifts x hours per shift x average efficiency/100
  4. Each day is checked against the shop calendar; the calculation bypasses inactive days or adjusts for any changes in the work center capacity for that day.
  5. Queue time days are subtracted in the same manner as move time days. The resulting date is the operation start date.

The algorithm then goes to the previous operation. When all operations have been included, the resulting date is the scheduled start date of the shop order. Note that MRP uses the item lead time to determine material requirement dates on planned orders.

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George Moroses

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Tips:  LX | BPCS | M3

Ok… so you want to know the status of a specific shop order that was released two days ago.

What do you do?

It’s a sure bet that you have a manager, supervisor, or planner who can walk the floor and find the order at whatever work center it happens to be at. He/she can then answer “what operations have been completed and how many were completed?” All this requires leg work, and of course, a fair amount of time.

Now, if you have set up your BPCS master files properly, and you report transaction activity, you should be able to get those shop order statuses much faster using the SFC300 Shop Order Inquiry Screen.

At your fingertips you can see:

  • Release date & due date
  • How many hours remain in total and at each operation
  • The quantity required, what was finished, and the remaining quantity
  • What components (materials) have been issued

Pretty basic information, right? Are you getting what you need to know? If not, then you may want to reexamine how your BPCS files are set up and what transactions along with their frequency are captured.

You can change your master schedule by specifying the type of master schedule update to perform. You can run a Net Change or Regenerative Schedule.

You also have the ability to clear the lower level requirements out of the Planned and Firm-Planned Order file.

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Tips: LN | Baan

Table Timestamp Definitions (ttadv4136m000)

Use this session to define timestamps for Infor LN tables. A timestamp is an additional column that stores the date and time of the last change for each record.

Timestamps are utilized by features like the extraction logic of CPM Enterprise Analytics. They enable CPM to perform incremental data extractions. For example, CPM can use the timestamps to extract records that were changed during the last week in a weekly extraction process.

To Create Timestamps...

Operations: To absorb the cost of cost items into specific projects, you'll need to handle them as customized items. However, cost items cannot directly be defined as customized items. Customized items must be physical, either manufactured or purchased.

That said, it's still possible to absorb cost items into a project, although indirectly. Here's how:

  1. Set Up Ledger Account: First, create a new ledger account in session tfgld0508m000 and set the type to "PCS" (project) in the operations management integrations. This account will be used for matching and approving purchase orders for cost items.

  2. Create and Activate Projects: Ensure that the necessary projects are created and set to active status.

  3. Purchasing Cost Items...

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