Rockwell Automation GMLC Reference Manual - Manual (Page 449)

Publication GMLC-5.2 - November 1999
412 Display and Operator Interface Blocks
The available display options are:
ASCII Text
To display standard ASCII text in any of the four fields, select ASCII Text
in the Field menu, and enter the desired text in the data entry box for this
field. ASCII text is always sent exactly as entered including any
imbedded spaces, preserving upper and lower case characters. The ASCII
text may be up to 120 characters long, but is usually limited to less than
this by the width of the operator interface device.
Any legal ASCII character (see Appendix B for an ASCII reference table)
except those shown in the following table may be used as part of an
ASCII text field.
To display any one of these characters, use the ASCII Code Field
selection as explained in the following section.
ASCII Code
To send an ASCII control code (for cursor control, for example) or to
display one of the illegal ASCII text characters in any of the four fields,
select ASCII Code from the Field menu. Then enter the ASCII code, for
the desired character, in the data entry box. The ASCII code entry is a
decimal number between 0 and 127 inclusive. See Appendix B for an
ASCII reference table showing the ASCII codes for all characters.
If you selected ASCII Code for the last displayed field in the Print to
Display block, the trailing carriage return and line feed characters are not
sent, regardless of the Suppress Auto CR/LF selection.
Illegal ASCII Text Field Characters
ASCII Keyboard Decimal Hex Description
LF CTRL + J 10 0A Line Feed
ESC CTRL + [ 27 1B Escape
; ; 59 3B Semi-colon
: : 58 3A Colon
“ “ 34 22 Quote