FB_WeeklyScheduler
Function block for triggering actions on certain weekdays in every nth week of the year.
 | The function block triggers switching when the switching time is passed. Subsequent modification of the switching events or the time is therefore not permitted. |
VAR_INPUT
uiPeriodicity : UINT;
uiBegin : UINT;
arrActiveWeekday : ARRAY[0..6] OF BOOL;
eStartEnd : ENUM;
stStartEnd : TIMESTRUCT;
stSystemtime : TIMESTRUCT;
uiPeriodicity: Periodicity or interval. May be within the range 1 to 52.
uiBegin: Start value for the week. May be within the range 1 to 52. Example: uiPeriodicity = 5, uiBegin = 2: Switching events in week 2, week 7, week 12 etc. - uiPeriodicity = 3, uiBegin = 1: Switching events in week 2, week 7, week 12 etc.
arrActiveWeekday: Day of the week on which an action is to be triggered - arrActiveWeekday[0] => Sunday .. arrActiveWeekday[6] => Saturday. Multiple selections are possible.
eStartEnd: Selection of start/end definition.
TYPE E_StartEnd : ( eSTARTTIME_ENDTIME := 1, eSTARTTIME_DURATION := 2, eSTARTTIME_ENDEVENT := 3, eSTARTEVENT_ENDTIME := 4, eSTARTEVENT_DURATION := 5, eSTARTEVENT_ENDEVENT := 6 ); END_TYPE eSTARTTIME_ENDTIME: Selection of start/end time. If the start time is equal or greater the end time, the end is allocated to the next day. eSTARTTIME_DURATION: Selection of start time/duration. eSTARTTIME_ENDEVENT: Selection of start time/end event. eSTARTEVENT_ENDTIME: Selection of start event/end time. If the start time is equal or greater the end time, the end is allocated to the next day. eSTARTEVENT_DURATION: Selection of start event/duration. eSTARTEVENT_ENDEVENT: Selection of start event/end event. |
stStartEnd: Structure with the parameters defining the start and end. Unused variables are ignored internally, e.g. the duration for the selection of start/end time.
TYPE ST_StartEnd : STRUCT todStartTime : TOD; bStartEvent : BOOL; tDuration : TIME; todEndTime : TOD; bEndEvent : BOOL; END_STRUCT END_TYPE |
todStartTime: Start time.
bStartEvent: Start event
tDuration: Switching duration.
todEndTime: End time.
bEndEvent: End event.
stSystemtime: current time in TIMESTRUCT format. It is important to count every second.
VAR_OUTPUT
bOut : BOOL;
bTriggerOn : BOOL;
bNoEventNextYear : BOOL;
bError : BOOL;
nErrorId : UDINT;
bOut: control output that is switched on or off by the start and end event.
bTriggerOn: trigger output for switch-on events. This output is used to detect switch-on events. If two switch-on events occur consecutively they would not be detected via the control output bOut, since this output would remain TRUE. See also time overlaps in the overview.
bNoEventNextYear: no day matching the parameterization was found within the next 366 days.
bError: this output is set to TRUE if the parameterization is faulty. The command-specific error code is contained in nErrorId. Reset to FALSE once the parameterization is correct.
nErrorId: contains the command-specific error code. Reset to 0 once the parameterization is correct. See error codes.