User Manual

Calenda

rs and schedulers

Schedule

172 | 351 CM110664en_07

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).