User manual

Magelis B - 33

4. Application pages

The PLC dialog table contains the "Page to be processed" word (1). The

display unit reads the dialog table in the PLC (2) and displays the desired

page (3).

Once the command has been processed, the display unit writes the

value "H’FFFF’" in the "Page to be processed" word (4), which tells the

PLC program that the display request has been acknowledged.

 From system pages

System pages are used to display application pages.

For more information about access to system pages, see section "6.

System pages", Page 39.

 Scrolling within a page

Scrolling is necessary to view the whole of a page, which contains more

lines than the screen is capable of displaying. On display, the first n (n

being the number of lines on the display unit) lines on the page are

displayed. For example, four lines for the XBT N400 display unit.

XBT ref. Note

N200 No scrolling

N400/N401/N410

NU400

For display units in “input” mode only

LIST OF PAGES

LIST OF ALARMS