SCAN1000 -Scada includes a facility to create powerful time triggers. Time events are created in the 'Schedules' object.
Schedule Timers are used to create time and period based events, which can be
used to automatically trigger activities such as recorder updates, data
calculations, file archives. Most projects have Schedules configured if only to display the
time!
A wide range of properties can be configured
for each Schedule object. The most important properties can be found on the
Schedule tab of the object property pages:
Schedule objects have two modes of operation:
- Period (Run every) - for events that occur at a regular time interval. The period
can be milliseconds through to days.
- Time (Run at) - for events that occur at regular times
In both cases time / date fields can be enabled and set as required. This
provides great flexibility. The example above schedules a timer event
every 15 minutes. If 'Run at...' is selected, the event will fire at 15
minutes past the hour. Different time / date settings are available depending on
which mode is chosen.
Events can occur continuously or for a predetermined number of
times.
Schedule objects have a View which shows when the next scheduled event will occur.