FB_BA_ScheduleBase
The basic schedule represents the parameterization and evaluation of the derived schedule function blocks FB_BA_ScheduleAnalog, FB_BA_ScheduleBinary and FB_BA_ScheduleMultistate.
The function block contains the actual schedule entries for 24 exception days and 7 weekdays.
The schedule entries for the 24 exception days are parameterized in the aException list.
The schedule entries for the 7 days of the week are parameterized in the aWeek list.
The three derived schedule function blocks FB_BA_ScheduleAnalog, FB_BA_ScheduleBinary and FB_BA_ScheduleMultistate have identical functionality - they differ only in the data type of the switching values, see example initializations.
Different data types cannot be mixed within a schedule function block.
Determination of the resulting switching command
All schedule entries active at a specific time are summarized in an internal priority matrix. From these schedule entries, the one with the highest switching time determines the switching value at one of the derived function blocks FB_BA_ScheduleAnalog, FB_BA_ScheduleBinary or FB_BA_ScheduleMultistate. The schedule entries are evaluated cyclically.
A schedule command is only valid for one day at a time (until midnight). Either a new switching command is defined from midnight or the default value of the derived schedule function blocks is output at the PresentValue.
The basic schedule determines the resulting switching command entry PresentValue according to the following criteria:
An active exception profile with an active schedule entry has priority over a weekly timer; the weekly timer is then not taken into account.
If an active exception profile does not have a schedule entry, the weekly timer is automatically added. This entry is equivalent to an active exception profile with an active schedule entry.
The weekly timer only comes into play if no exception profile is active and determines the PresentValue based on active schedule entries.
If the weekly timer does not have an active schedule entry either, the default value = PresentValue.
Samples of configuration in connection with other Schedule function blocks.
Inputs CONSTANT PERSISTENT
VAR_INPUT CONSTANT PERSISTENT
{region 'Variable Parameters'}
{attribute 'parameterCategory':='Value'}
aWeek : T_BA_ScheduleWeek;
{attribute 'parameterCategory':='Value'}
aException : T_BA_ScheduleExceptionList;
{endregion}
END_VARName | Type | Description |
|---|---|---|
aWeek | The weekly program aWeek contains a daily profile for each day of the week (Monday to Sunday). A profile consists of the following properties:
Sample declarations can be found attached. | |
aException | The aException list contains 24 schedule exception profiles. A profile consists of the following properties:
Sample declarations can be found attached. |
Properties
Name | Type | Access | Definition location | Description |
|---|---|---|---|---|
Exception | Get / Set | Public | The Exception property enables read and write access to the exception entries of the schedule. | |
Week | Get / Set | Public | The Week property enables read and write access to the weekly program of the schedule. |
Prerequisites
Development environment | Required PLC library |
|---|---|
TwinCAT from v3.1.4024.62 | Tc3_BA2 from v5.5.2.0 |