User Manual

Calendars and schedulers
Schedule
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10.1 Schedule
Weekly schedule [WeekSchd]
The weekly schedule [WeekSchd] consists of seven 24-hour profiles, one for each day of the week. By
default, the priority level assigned to the weekly schedule is 16 (the lowest priority). The weekly schedule is
active unless there is an exception schedule.
For system limits, see chapter
System Configuration .
24-hour profiles
A 24-hour profile is a list of time-and-value pairs. The present value remains at the [PrVal] output until the
processing of the next time-and-value pair causes a new value to be written to the output.
If there is no schedule entry with a switch time of 00:00 in the daily profile, the default value determines
the resulting Present_Value (=Rule schedule default value).
If the daily profile encompasses an empty list of schedule entries, the default value [DefVal] determines
the resulting Present_Value (=Rule schedule default value).
The evaluation of the exception schedule, weekly schedule, and [DefVal] is as follows:
Start of the day:
● Exception schedule with switch value at 00:00:
The exception schedule determines the resulting Present_Value if an active switch value exists at
00:00. The day begins with this exception value (=Rule switch value exception schedule).
● Empty daily profile:
If the daily profile encompasses an empty list, the default value [DefVal] determines the resulting
Present_Value (=Rule schedule default value).
● Daily profile with switch value at 0:00.
If a schedule entry with switch time 00:00 and active switch value is available in the daily profile, the
switch value determines the resulting Present_Value. The day begins with the daily profile value (=Rule
Switch value daily profile).
Course of the day: