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DT465 Link

Below, you will find descriptions of individual parameters of the links.

ID (technical) of the successor project

Functional ID of the successor project

The parameter can be edited in the following module by users with modification rights:

Name of the successor project

ID of the successor task

ID (functional) of the successor task

The parameter can be edited in the following module by users with modification rights:

Name of the successor task

Technical ID of the predecessor task

Link type

Values:

  • SS: Start-Start (task A can begin with the start of task B)
  • SF: Start-Finish (the start of task A is a precondition for the end of task B)
  • FS: Finish-Start (task B can only start once task A has finished)
  • FF: Finish-Finish (the end of task A is a precondition for the end of task B)

The parameter can be edited in the following module by users with modification rights:

The time interval is the difference between the reference point for the predecessor task and the reference point for the successor task.

Details

  • Both positive and negative values are permissible for a time interval:
    • Positive time interval: start of task 2 = end of task 1 + time interval
    • Negative time interval: start of task 2 = end of task 1- time interval. This creates an overlapping between the tasks.

Example

  • Depending on the entry in the Link type % field, the time interval is either an absolute value (checkbox deactivated) or a percentage value (checkbox activated).
    • Calculation of a percentage time interval:
      • 100 x (absolute) time interval/task duration (predecessor)

The parameter can be edited in the following module by users with modification rights:

The link total float of a link is the period by which a time interval can be changed without exceeding the total float time of the successors. It logically equates to a "total" floating time of the link. The free float of a task is therefore the minimum slack of all successor relationships.

Note

  • The respective data field is hidden by default but the user can unhide it if required.

Defines whether the time interval is calculated as an absolute or as a percentage value The time interval is calculated from the task duration.

Values

  • : percentage interval depending on the duration of the predecessor
  • : absolute interval

The parameter can be edited in the following modules by users with modification rights:

Note

  • The respective data field is hidden by default but the user can unhide it if required.

Minimal condition restrict the earliest dates and maximum conditions restrict the latest dates of task.

Details

  • FS link between task A to task B under minimum condition means:
    • Task B cannot start until Task A is completed.

  • FS link between task A to task B under maximum condition means:
    • the latest possible start time for task B is the time at which task A finishes.

  • Combined minimum and maximum condition. If a minimum and a maximum condition of the same link type are set simultaneously between two tasks, then the tasks will be chained together. Unlike the situation in which there is only a minimum condition, in this linkage there is no float for task A and B, even though a requested end has been set.

Values

  • - Minimum condition in linkage
  • - Maximum condition in linkage

The parameter can be edited in the following modules by users with modification rights:

Note

  • The respective data field is hidden by default but the user can unhide it if required.

The link calendar will be taken into account in the interval calculation for subsequent dates.

The parameter can be edited in the following modules by users with modification rights:

Note

  • The respective data field is hidden by default but the user can unhide it if required.
See also: Taking into account of different calendars during scheduling, Create calendar

This parameter defines whether the link is to be hard or soft.

Values

  • - soft link
    • In the case of tasks connected via soft links, the calculated dates are calculated as if no links existed.
    • However, the successor task gets a visualization of the potential delay (in PLANTA called "overlapping") with the predecessor.
    • If a soft link is used, the dates will be retained. The necessary postponement is displayed and must be carried out manually by changing the requested date
  • - fixed link
    • If you use fixed links, the schedule is calculated in accordance with the set links. Requested dates are not taken into account.

Examples from PLANTA project

  • Fixed link with FS0
    • Successor immediately follows predecessor.

  • Soft link with FS0
    • Date of successor is determined by the defined requested date.
    • Red circles indicate overlapping with predecessor.

Data items concerned

Bar symbol

The parameter can be edited in the following modules by users with modification rights:

Note

  • The respective data field is hidden by default but the user can unhide it if required.

The parameter defines whether the successor task is an external task.

Values

  • - The successor task is an external task
  • - The successor task is no external task

Note

  • The checkbox is activated automatically (manual editing not possible) if an external successor task is selected for a task (in the module schedule).
See also: External Tasks

The requested start date of the successor task

Details

The requested end date of the successor task

Details

The calculated start date of the successor task

Details

  • The value is copied from the Calc. end of the task in DT463.

The calculated end date of the task of the successor task

Details

  • The value is copied from the Calc. end of the task in DT463.

Actual start date of the successor task

Details

  • The value is copied from the Actual start of the task in DT463.

Actual end date of the successor task

Details

  • The value is determined from the Actual end of the task in DT463.

This field shows whether the task successor is a normal task, a milestone, or a master milestone.

  • No entry: normal task
  • 1: milestone
  • 2: master milestone

Bar for the calculated dates of the successor task

Bar for the requested dates of the successor task

Name of the parent task of the successor task

Note

  • The respective data field is hidden by default but the user can unhide it if required.

Here, the work break down structure code of the successor task is displayed

Note

  • The corresponding data field is hidden by default but the user can unhide it if required.
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