Using Time Types on Operations

You can use various time types on operations: estimated, simulated, and analyzed times.

In the task below, for simplicity, only estimated and analyzed times are shown (simulated times work in a similar way).

Before you begin: Start the Manufacturing System Definition workbench.
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About Time Types on Operations

  1. Under the root system, create two systems with a product flow between them as shown below.



  2. Create operations under these systems as follows.



  3. Set time modes and estimated time values in the Properties dialog boxes of the operations as follows:


    • Right-click Operation 1 and set the Time Mode to Estimated Time and the Estimated time to 10.
    • Right-click Operation 2 and set the Time Mode to Analyzed Time and the Estimated time to 7.
    • Right-click Operation 3 and set the Time Mode to Analyzed Time and the Estimated time to 25.

  4. In the Gantt chart, create precedence time constraints between the Operations 1 and 2.

  5. Using Standard Time Measurement, create a time analysis for Operation 2.




    • Enter a name and the desired subsystem and click Finish.
    • In the STM interface that opens, define and save the time analysis.

    See the Standard Time Measurement User's Guide for more information.

  6. In the same way, create a time analysis for Operation 3.

  7. Click Manufacturing System Gantt to display the Gantt chart.

  8. Right-click the root system in the Gantt chart and set Time Type Visualization to Estimated Time.



    The times in the Duration column are estimated times.

  9. Right-click the root system in the Gantt chart and set Time Type Visualization to Analyzed Time.



    The times in the Duration column are analyzed times. Note that an analyzed time was not specified for Operation 1.

  10. Right-click the root system in the Gantt chart and set Time Type Visualization to Time Type Defined On Operation.



    The times in the Duration column are the times that were specified on the operations, which may be estimated or analyzed times.