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George Moroses
/ Categories: Infor LX & BPCS Tips, Manufacturing

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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Tips:  LX | BPCS | M3

Exit Points is a new feature in Infor LX Version 8 that allows users to customize, without changing the original LX source code. Exit points provide a way for you to call an external program and pass a set of parameters to implement any needed custom logic. By using Exit Points, LX customers are able to modify the software, and still take advantage of new releases from Infor. Exit points are available in many LX programs. A complete list is available on the Infor support website.

Optimize Your Manufacturing Today!

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Poor performance indicators make for poor outcomes.

Companies today continue to tolerate and accept how labor and production information is recorded, and the reliability on that information is questionable. In addition to collecting labor and production information, there are many other pieces of information manually recorded from the shop floor.

A critical element of information for productivity throughput would be to examine how much time the work center or machine was actually up and running. Downtime is another critical element of data that is usually manually recorded along with a reason identifying what caused production to stop. If this information is not provided on a timely and accurate basis, then what good is it anyway? Forms are filled out, data may or may not be keyed to a spreadsheet, the forms are sorted and filed, but is anybody really looking at the information that was recorded? Think about the amount of time it takes to manage the manual collection of information from your shop floor. 

What would real time access to data mean to your organization?
The benefits:

  1. Real Time Production Visibility
  2. Reduced Paperwork Load
  3. Downtime and Scrap Visibility
  4. WIP Inventory Visibility
  5. Improve Efficiency, Capacity Utilization

Optimize Your Manufacturing Today!

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Tips: LN | Baan

All actions required for converting, validating, matching, and posting electronically received bank statements can be performed within a single session:

  • Bank Statement Workbench (tfcmg5610m100)
  • Bank Statement (tfcmg5610m000)

Alternatively, you can use the sequence of electronic bank statement sessions outlined below.

Steps to Process Electronic Bank Statements:

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