Omron NT21 Reference Manual page 132

Lamps
Reference: Different colors can be set for a lamp's guide characters when ON and OFF, but
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display locations for the ON and OFF character strings. All other settings are
the same as the settings for the fixed display's character strings.
For details on displaying multiple lines and specifying alignment, refer to Dis-
playing Multiple Lines of Guide Characters below. For details on other proper-
ties, refer to 2-4-2 Text (Fixed Display).
the background color is always transparent.
Numeral Display
The properties settings are the same as those for numeral displays. Refer to
2-8 Numeral Display for details.
Character String Display
The properties settings are the same as those for numeral displays. Refer to
2-8 Numeral Display for details.
Displaying Multiple Lines of Guide Characters
Multiple lines of guide characters can be specified when fixed character strings
or ON/OFF switching character strings are being used. The number of charac-
ters that can be input depends upon the model of PT being used, as shown in the
following table.
Model Max. number of
guide characters*
NT21 128
NT31/NT31C 128
NT631/NT631C 256
* The new line code (<\n>) is counted as one character in the number of characters.
The space between guide character lines (number of dots from the bottom of a
line to the top of the next line) is set with the line spacing property. A negative line
spacing can be specified, so that a later line will partially overlap the preceding
line, but there must be at least 8 dots of space between the tops of the two lines.
First line
Second line
It is also possible to set the alignment (left, center, or right) of the lines.
Left alignment
Left alignment of mul-
tiple lines of guide
characters.
Image/Library Lamps
The relationship between the properties of an image/library lamp and the dis-
played graphic are indicated below.
Max. number of
characters/line*
32
40
80
Line spacing (dot units)
Center alignment
Center alignment of
multiple lines of guide
characters.
Section 2-6
Max. number of
lines
8
15
30
Right alignment
Right alignment of
multiple lines of guide
characters.