User Manual

Ca
lendars and schedulers
Schedule
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Variable DefVal Variable EnDef Property Schedule_Default
Value True Value
Don't care False NIL (= Release)
The NIL value in the Schedule_Default property is the release value for the active priority of the object
controlled by the scheduler. Do not confuse it with the NIL value in the exception schedule used to
prioritize the time entries.
Function blocks for various data types
There are four versions of the schedule block, with an analog, binary or multistate output or with a variable
data type (boolean, unsigned, real or enumerated).
Function block Output Example
BSchd (PX) Binary True/False
ASchd (PX) Analog 20°C
MSchd (PX) Multistate Off, Stage 1, Stage 2, Stage 3
Schd (PX and Desigo room automation) Boolean / Unsigned / Real / Enumerated
The switching value is output to [PrVal] and to the objects to be switched (commanded objects list). A
schedule block can only contain switching values of the same data type (binary or analog or multistate or
boolean or unsigned or real or enumerated). It is therefore not possible to switch two different data types in
sequence.
In Desigo PX the CAL (calender) and SCHED (schedule) function blocks can be created online.
Commanded objects
The schedule can influence other commandable objects, irrespective of whether or not they are in the
same automation station.
The schedule is thus a grouping object and contains a list of group members, in the form of a list of name
references [NamrList]. These group members are the commanded objects, that is, the objects to be
switched. The list can contain up to five entries.
Referencing
The referencing of group members is resolved at runtime.
Information flow
The grouping and the information flow only go in one direction (forward referencing).