Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 99)

ASCII I/O Module Tutorial
Chapter 4
4Ć25
For a display of the following diagnostic codes
12345678
ABCD4321
FACEBAC2
your message file (Table 4.P) would appear as:
Table 3.P
Example Message File
POSITION FILE DATA Description (FILE DATA)
001
002
003
004
005
006
007
008
009
010
011
012
013
014
015
016
017
018
019
1041
1031
3B31
413A
1234
5678
3A00
1031
3B32
413A
ABCD
4321
3A00
1031
3B33
413A
FACE
BAC2
3A0D
CTRL P A
CTRL P Column number
; Line number
A BCD delimiter
Diagnostic code
Diagnostic code
BCD delimiter
CTROL P Column number
; Line number
A BCD delimiter
Diagnostic code
Diagnostic code
BCD delimiter
CTRL P Column number
; Line number
A BCD delimiter
Diagnostic code
Diagnostic code
BCD delimiter EOS delimiter
Notice the following:
Home position of the cursor appears once (position 001) before you
specify line and column numbers.
Column numbers remain constant at 31 in this example.
Line numbers advance by one (31, 32, 33,...) in this example.
BCD delimiter precedes and follows the variable.
End-of-string (EOS) delimiter is placed at the end of this single string.
You would have entered zeros for your variables (diagnostic codes) in
positions 005 and 006, 011 and 012, 017 and 018 when setting up your
file. Your program inserts values when you enable the display.