PX 30 and PX 120 Operating Manual
4-3
Scrolling Background Text
It is possible to edit records with more than two lines of text. A record may contain a
maximum of 320 characters (without control characters). On the PX 30 (20 characters per
line), 16 lines of text are possible per record and on the PX 120 (40 characters per line), 8
lines. When a record is displayed, the first two lines of the text are shown. In both parallel
and serial drive, the scrolling of texts is only possible via the special scroll inputs:
• PX 30: E9 (up) / E8 (down)
• PX 120: E17 (up) / E16 (down)
Additional lines (background text) can be displayed by pressing the keys connected to
these scroll inputs. Each time a key is pressed (positive-going pulse edge at the scroll
input), the text is scrolled on one line (ie. when scrolling downwards, for example, the 2nd
line will become the 1st line on the display and the 3rd line will become the 2nd).
Shown on the Display After scrolling both lines
downwards
1st line
2nd line
3rd line
4th line
5th line
6th line
7th line
8th line
1st line
2nd line
3rd line
4th line
5th line
6th line
7th line
8th line
8-line record on the PX 120
A configuration instruction can be used to change the scroll function so that only the 2nd
line of the display is scrolled with background text and the 1st line remains on the display
(see the chapter entitled "Configuration" on page 6-1).
The display will return to the start of the text when both scroll inputs are set simultane-
ously ie, the first two lines will be displayed.
Shown on the Display After scrolling the 2nd line
downwards
1st line
2nd line
3rd line
4th line
5th line
6th line
7th line
8th line
1st line
2nd line
3rd line
4th line
5th line
6th line
7th line
8th line
8-line record on the PX 120
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