Clock7d1Ch

Clock7d1Ch (FB)

FUNCTION_BLOCK Clock7d1Ch

Short description

Time switch with 7 weekdays, each having one on/off time and a binary overall output. The mode of operation (on period or off period) can be defined per weekday. Typical application: defining night/day operation of a zone temperature control.

Representation

Interfaces

Inputs

Name	Data type	Value range	Initial value	Function
xEn	BOOL			Enable input

Outputs

Name	Data type	Value range	Initial value	Function
xActive	BOOL			Display of active switching periods
todActivatedFrom	TOD			Switch-on time of the current weekday
todActivatedTo	TOD			Switch-off time of the current weekday

Setpoints / Parameters

Name	Data type	Value range	Initial value	Function
todMonFrom	TOD		TOD#07:00	Switch-on time - Monday
todMonTo	TOD		TOD#12:00	Switch-off time - Monday
xMonMode	BOOL		TRUE	Mode - switching period - Monday
todTueFrom	TOD		TOD#07:00	Switch-on time - Tuesday
todTueTo	TOD		TOD#12:00	Switch-off time - Tuesday
xTueMode	BOOL		TRUE	Mode - switching period - Tuesday
todWedFrom	TOD		TOD#07:00	Switch-on time - Wednesday
todWedTo	TOD		TOD#12:00	Switch-off time - Wednesday
xWedMode	BOOL		TRUE	Mode - switching period - Wednesday
todThuFrom	TOD		TOD#07:00	Switch-on time - Thursday
todThuTo	TOD		TOD#12:00	Switch-off time - Thursday
xThuMode	BOOL		TRUE	Mode - switching period - Thursday
todFriFrom	TOD		TOD#07:00	Switch-on time - Friday
todFriTo	TOD		TOD#12:00	Switch-off time - Friday
xFriMode	BOOL		TRUE	Mode - switching period - Friday
todSatFrom	TOD		TOD#07:00	Switch-on time - Saturday
todSatTo	TOD		TOD#12:00	Switch-off time - Saturday
xSatMode	BOOL		TRUE	Mode - switching period - Saturday
todSunFrom	TOD		TOD#07:00	Switch-on time - Sunday
todSunTo	TOD		TOD#12:00	Switch-off time - Sunday
xSunMode	BOOL		TRUE	Mode - switching period - Sunday
sNotice	STRING		‘Notice’	Designation - time switch

Function description

General

Weekdays 1 - 7 (Monday … Sunday, XXX = Mon, Tue, Wed, Thu, Fri, Sat, Sun)

Each of the seven weekdays has its own switching period assigned. Each switching period is defined by adjustable data (switch-on time todXXXTimeFrom and switch-off time todXXXTimeTo ) defined. In addition, an operating mode ( xXXXMode ) per weekday. If the switch-off time is earlier than the switch-on time, then for the check the switch-off time is set to the value of the switch-on time. A switching period is active if the current time on weekday XXX is within the switching period of weekday XXX ( xXXXMode = TRUE ). A switching period is active if the current time on weekday XXX is outside the switching period of weekday XXX ( xXXXMode = FALSE ). \

Special case 1: switch-on time = switch-off time = TOD#00:00

When an on period is active ( xXXXMode = TRUE ) the switching period is not active for the whole day. When an off period is active ( xXXXMode = FALSE ) the switching period is active all day.\

Special case 2: switch-on time = switch-off time = TOD#23:59

When an on period is active ( xXXXMode = TRUE ) the switching period is active all day. When an off period is active ( xXXXMode = FALSE ) the switching period is not active all day.\

Prerequisite for using the function block Clock7d1Ch

For correct operation the use of the function block TimeRead2 is required.\

On period

Off period

Enable input xEn

xEn	xActive	todActivatedFrom	todActivatedTo	Note
FALSE	FALSE	unchanged	unchanged	FB disabled
TRUE	State depending on weekday, time and switching period	Switch-on time of the switching period of the current weekday	Switch-off time of the switching period of the current weekday	FB enabled

Display output xActive

The display output xActive takes the state TRUE if, with enable input active ( xEn = TRUE ) the time on weekday XXX is within the switching period of weekday XXX ( xXXXMode = TRUE, on period ). The display output xActive takes the state TRUE if, with enable input active ( xEn = TRUE ) the time on weekday XXX is outside the switching period of weekday XXX ( xXXXMode = FALSE, off period ). In all other cases the display output xActive assumes the state FALSE. \

xEn	xActive	Switching period XXX	xXXXMode - XXX	Note
FALSE	FALSE	X	X	FB disabled
TRUE	FALSE	FALSE	TRUE	On period not active
TRUE	TRUE	TRUE	TRUE	On period active
TRUE	TRUE	FALSE	FALSE	Off period not active
TRUE	FALSE	TRUE	FALSE	Off period active

Switch-on time of the switching period of the current weekday todActivatedFrom

This output permanently shows the switch-on time of the switching period of the current weekday if the enable input ( xEn = TRUE ) is active. In all other situations it is not changed. In special cases 1 and 2 the value TOD#00:00 is always shown.\

Switch-off time of the switching period of the current weekday todActivatedTo

This output permanently shows the switch-off time of the switching period of the current weekday if the enable input ( xEn = TRUE ) is active. In all other situations it is not changed. In special case 1 the value TOD#00:00 is always shown, in special case 2 the value TOD#23:59 is shown.\

Visualization

Matching visualization element from the HVACV Visu Library: FB_Clock7d1Ch

Representation

Visu element interfaces

Name	Data type	Type	Initial value	Function
FB_Clock7d1Ch	Clock7d1Ch	VAR_IN_OUT		Enter FB Clock7d1Ch here e.g. PRG.Clock7d1Ch

Or visual element Clock7d1Ch_D as dialog. Call the dialog e.g. via the visual element Clock7d1Ch_Button

Visu element interfaces

Name	Data type	Type	Initial value	Function
FB_Clock7d1Ch	Clock7d1Ch	VAR_IN_OUT		Enter FB Clock7d1Ch here e.g. PRG.Clock7d1Ch
ClockNumber	INT	VAR_INPUT		Clock number. Used only for displaying the title.
BMS_Active	BOOL	VAR_INPUT		BMS (Building Management System) BMS (building management). If BMS_Active = TRUE the input/editing of the clocks is disabled because they can then only be set via the BMS. Times can then only be viewed.
DisableInput	BOOL	VAR_INPUT		DisableInput = TRUE Times of the weekday clocks can only be viewed and not edited.

Note: VAR_IN_OUT interfaces must be assigned, VAR_INPUT are optional.

CODESYS

InOut:

Scope	Name	Type	Initial
Input	xEn	BOOL
Input Const	todMonFrom	TOD	TIME_OF_DAY#6:0
Input Const	todMonTo	TOD	TIME_OF_DAY#18:0
Input Const	xMonMode	BOOL	TRUE
Input Const	todTueFrom	TOD	TIME_OF_DAY#6:0
Input Const	todTueTo	TOD	TIME_OF_DAY#18:0
Input Const	xTueMode	BOOL	TRUE
Input Const	todWedFrom	TOD	TIME_OF_DAY#6:0
Input Const	todWedTo	TOD	TIME_OF_DAY#18:0
Input Const	xWedMode	BOOL	TRUE
Input Const	todThuFrom	TOD	TIME_OF_DAY#6:0
Input Const	todThuTo	TOD	TIME_OF_DAY#18:0
Input Const	xThuMode	BOOL	TRUE
Input Const	todFriFrom	TOD	TIME_OF_DAY#6:0
Input Const	todFriTo	TOD	TIME_OF_DAY#18:0
Input Const	xFriMode	BOOL	TRUE
Input Const	todSatFrom	TOD	TIME_OF_DAY#6:0
Input Const	todSatTo	TOD	TIME_OF_DAY#18:0
Input Const	xSatMode	BOOL	TRUE
Input Const	todSunFrom	TOD	TIME_OF_DAY#6:0
Input Const	todSunTo	TOD	TIME_OF_DAY#18:0
Input Const	xSunMode	BOOL	TRUE
Input Const	sNotice	STRING	‘Notice’
Input Const	eMode	eClockMode	eClockMode.EachModeSeparately
Output	xActive	BOOL
Output	todActivatedFrom	TOD
Output	todActivatedTo	TOD