Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 64)

Choosing Module Features
Chapter 3
3Ć22
The module would remove the fill character and store the data as follows
(assume right justified data, a string length of 11, and two ASCII
characters per word).
First
Transfer
Second
Transfer
2020 2020
2020 2020
2031 2020
3332 2020
3536 3735
3938 3931
The module removed the fill characters inserted by the device (2D hex),
right justified the data, and added its own fill character (20 hex).
Select any ASCII character as the fill character that the module will
remove except:
- Any character that otherwise would be included in the data
- The end-of-string delimiter that you chose in section titled Using the
End-of-String Delimiter, IW3(10-16), P. 2-17.
ASCII characters and their codes are listed in tables in appendix A.
Record your selection by writing the 7-bit ASCII code in binary or hex in
IW4(10-16) for the fill character to be removed. Use the form (found at
the end of this chapter) or the boxes below.
IW4
Removed Fill Character
17 16 15 14 13 12 11 10
0
Your ASCII Module Inserts Fill Characters
The module has two non-selectable internal fill characters, the space (20
hex) that is displayed at a data terminal as a space and the null (00 hex)
that is not displayed. When justifying data, the module inserts fill
characters according to the data conversion that you have selected. It