SIPLACE Line Computer UNIX.pdf - 第337页

User Manual Line Computer UNIX 11 Production Tools / Optimization Software Vers ion 502.xx 10/2000 Issue 11.4 Optimization Dialog 335 I t I I 1 1.4.3 S ERVICES Menu The S ERVICES menu contains the foll owing optio ns: - …

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11 Production Tools / Optimization User Manual Line Computer UNIX
11.4 Optimization Dialog Software Version 502.xx 10/2000 Issue
334
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t I I
Command area „Actions“
In the "Actions“ command area, the icons are displayed by means of which the following actions can be
performed:
- starting the Optimization,
- aborting the Optimization and
- displaying the Optimization results.
For a detailed description of the icons refer to section 11.4.4.
Command area „Editing“
In the "Editing" command area, the icons are displayed by means of which the following actions can be
performed:
- selecting,
- creating,
- editing and
- displaying directories.
For a detailed description of the icons refer to
section 11.4.5.
Info box
In the info box, a yellow bar is displayed to indicate graphically the progress of the optimization process for a
given lot file. A display is provided informing you for which lot file the optimization is being performed. In the
right portion of the Info box, the production time and setup changeover time for the setups calculated during
the optimization run are displayed. As the optimization process progresses, these times become more favorable
until the optimum setup with the shortest production time and changeover time is found. The optimization
process covers the following phases:
- Start: optimization is started.
- Read-in data: the data are checked for consistency.
- Clustering: several jobs are combined into setup clusters.
- Station balancing: a time-optimized setup is calculated.
- Track allocation: the setups for the individual stations are calculated.
- Creation of setups: the setups are created.
- Quit: the setups are saved.
User Manual Line Computer UNIX 11 Production Tools / Optimization
Software Version 502.xx 10/2000 Issue 11.4 Optimization Dialog
335
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t I I
11.4.3 SERVICES Menu
The SERVICES menu contains the following options:
- Changing standard parameters (see section 11.4.3.1)
- Changing job parameters (see section 11.4.3.3)
- Discarding job parameters (see section 11.4.3.4)
- Viewing error file (see section 11.4.3.5)
- Starting Feeder Editor (see section 11.4.3.6)
- Starting Restriction Editor (see section 11.4.3.7)
- Checking for producibility (see section 11.4.3.8)
- Display set-up (see section 11.4.3.9)
- Display result file (see section 11.4.3.10)
11.4.3.1 Changing Standard Parameters
At the start of the optimization run, Set-Up Optimization reads in a parameter file, the standard parameters.
This file contains a number of parameters which control the optimization process and have an effect on setup
clustering. The settings may be the factory-preset default values which, however, can be changed by the
customer as required.
The setting of the parameters is explained in
section 11.4.3.2 by means of three examples of production
situations.
Procedure
● On the SERVICES menu click on the Change standard parameters option.
The „Change standard parameters for xx.lose“ window opens.
11 Production Tools / Optimization User Manual Line Computer UNIX
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Fig. 11.4.2 Changing Standard Parameters
Meaning of the Parameters
- DETERMINATION OF RUN TIME:
Optimization run time increases exponentially with the number of jobs. The quality of the setup can be set
via the run time: long run time -> good setup, short run time -> poor setup. The run time of Optimization
can be limited. Once the preset run time is exceeded, or the preset number of iteration steps completed,
Optimization is aborted. The best solution hitherto found continues to be used.
Optimization can produce reproducible (parameter: no. of iteration steps) and non-reproducible results
(parameter: Program run time per PCB).
- Program run time per PCB [sec]
This parameter allows you to define how long Optimization is to run for a given job. By multiplication
with the number of jobs contained in a lot file it is possible to determine the total run time of Optimiza-
tion for that lot file. A more optimized setup is computed requiring, however, more computing time. The
optimization results are not reproducible.