Button1

Button1 (FB)

FUNCTION_BLOCK Button1

Short description

Switching element with timer program and push button.

Representation

Interfaces

Inputs

Name	Data type	Value range	Initial value	Function
xClockchannel	BOOL			Input - timer program
xButton	BOOL			Input - control button

Outputs

Name	Data type	Value range	Initial value	Function
xQ	BOOL			Enable output
xQET	BOOL			Indicator: hold-extension is active
tET	TIME			Remaining time - hold-extension
tTime	TIME			Scaled display of udiTime
udiMinVisu	UDINT			Display of tMinTime for the visualization
udiMaxVisu	UDINT			Display of tMaxTime for the visualization

Setpoints / parameters

Name	Data type	Value range	Initial value	Function
eManModeB	eMANBIN	eMANBIN.Auto, eMANBIN.ManOff, eMANBIN.ManOn	eMANBIN.Auto	Operating mode of the manual override for the digital output xQ
xButtonVisu	BOOL		FALSE	Function like xButton
xEnClockButton	BOOL		FALSE	Option 'Enable control button during active timer program'
xEnToggle	BOOL		TRUE	Option 'Lock - toggle operating mode'
udiTime	UDINT		120	Time input (absolute limits: 0..7 days) depending on scaling
eTimeScale	eTime		eTime.Minute	Definition of the scaling of the time input (seconds, minutes, hours)
tMinTime	TIME		T#0m	Lower limit for the time input udiTime
tMaxTime	TIME		T#120m	Upper limit for the time input udiTime

Function description

General

The function block is basically used to define the operating modes night operation (xQ = FALSE) and day operation (xQ = TRUE) depending on the states of the inputs timer program (xClockchannel) and control button (xButton and / or xButtonVisu). The operating behavior is influenced by a total of two adjustable options. In the basic configuration (see option settings below), the basic functions are available.

Enable output xQ

The enable output xQ always indicates the current state of the switching element depending on the inputs and the two options.

Indicator - hold-extension xQET

The indicator output xQET always indicates the active state of the hold-extension.

Remaining time - hold-extension tET

The indicator output tET always indicates the current remaining time of an active hold-extension. Immediately after the first download and before the first start of the timer, the value T#0s is always displayed.

Option tEnClockButton

With this option the button is locked or enabled during the active timer program. If the setpoint/parameter tEnClockButton TRUE, then the outputs can be switched on and off with the buttons (xButton and/or xButtonVisu) when the input xClockchannelis active, the output xQ can be switched off and on.

Option tEnToggle

If the setpoint / parameter tEnToggle TRUE, then in night operation the hold-extension can be turned on and off with the buttons (xButton and / or xButtonVisu). Otherwise only starting the hold-extension is possible.

Scaling / display of the time duration udiTime

The indicator output tTime permanently shows the current value of the setpoint / parameter udiTime in scaled form (eTimeScale) and absolutely limited by tMinTime or tMaxTime .

Display of the lower time limit udiMinVisu

The indicator output udiMinVisu permanently shows the current value of the setpoint / parameter tMinTime in scaled form (eTimeScale) and absolutely limited by tMinTime or tMaxTime .

Display of the lower time limit udiMaxVisu

The indicator output udiMaxVisu permanently shows the current value of the setpoint / parameter tMaxTime in scaled form (eTimeScale) and absolutely limited by tMinTime or tMaxTime . CODESYS

InOut:

Scope	Name	Type	Initial
Input	xClockchannel	BOOL
Input	xButton	BOOL
Output	xQ	BOOL
Output	xQET	BOOL
Output	tET	TIME
Output	tTime	TIME
Output	udiMinVisu	UDINT
Output	udiMaxVisu	UDINT
Input Const	tMaxTime	TIME	TIME#120m0s0ms
Input Const	tMinTime	TIME	TIME#0ms
Input Const	eTimeScale	eTime	eTime.Minute
Input Const	udiTime	UDINT	120
Input Const	xEnToggle	BOOL	TRUE
Input Const	xEnClockButton	BOOL	FALSE
Input Const	xButtonVisu	BOOL	FALSE
Input Const	eManModeB	eManBin	eMANBIN.Auto