Parameter

Data type

Description

Names

ARRAY[0..9] of WSTRING[20]

List of all available user groups

VC4 connection: TextDatapoint from Listbox

SelectedIndex

UINT

Index of the entry currently selected in the list

VC4 connection: IndexDatapoint from Listbox

MaxSelection

UINT

Index of the last entry in the list

VC4 connection: MaxDatapoint from Listbox

PageUp

BOOL

Jumps to the start of the current page and then scrolls up one page at a time

VC4 connection: Datapoint from Button / Type: SetDatapoint / SetValue: 1 / ResetValue: 0

StepUp

BOOL

Selects the previous entry in the list

VC4 connection: Datapoint from Button / Type: SetDatapoint / SetValue: 1 / ResetValue: 0

PageDown

BOOL

Jumps to the end of the current page and then scrolls down one page at a time

VC4 connection: Datapoint from Button / Type: SetDatapoint / SetValue: 1 / ResetValue: 0

StepDown

BOOL

Selects the next entry in the list

VC4 connection: Datapoint from Button / Type: SetDatapoint / SetValue: 1 / ResetValue: 0

RangeStart

REAL

Shows a bar indicating which part of the list is currently being displayed. Used for the starting value of "Range" for a scaled element in the HMI application. This scaled element should correspond to the (possible) size of the list. "Range" should correspond to the number of entries that are displayed on one page.

VC4 connection: StartDatapoint from Scale

RangeEnd

REAL

Shows a bar indicating which part of the list is currently being displayed. Used for the ending value of "Range" for a scaled element in the HMI application. This scaled element should correspond to the (possible) size of the list. "Range" should correspond to the number of entries that are displayed on one page.

VC4 connection: EndDatapoint from Scale