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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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Tips:  LX | BPCS | M3

The system allows you to manipulate and maintain a simulated MPS and MRP. You can copy the simulation from the existing first cut, or you can create a totally new schedule. You can also perform a simulation of the rough-cut capacity plan. This allows a quick visual inspection by inquiry or menu of needed work center

loads for the proposed MPS. After you choose a suitable MPS and rough-cut capacity, the system allows you to transfer the simulated MPS to the live Master Production Schedule.

The challenge in cost accounting is tracking your manufacturing to the levels needed for useful management information. You need feedback for corrective action; but, you need to minimize the cost of collection. Some parts of your operation require specific job-cost tracking while the Just-in-Time areas require

costing in terms of cost per process hour or day. Apply overhead in different ways to different processes and products. Segregate costs into enough detail

to provide management with an accurate picture of the contents of your product. Material, material overhead, labor, fixed overhead, variable overhead, outside processing, outside processing overhead, and so forth all have to be considered.

 

LX meets your cost accounting needs with the following functionality:

â–ª Four sets of costs: actual, standard, frozen standard, and simulated

â–ª Nine user-defined elements per set

â–ª Full and partial cost roll-up and simulation

â–ª Cumulative in-process cost tracking

â–ª Cost summaries by item

â–ª Cost definition tied to work centers or material type

â–ª Process hour costing

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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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