Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 86)

ASCII I/O Module Tutorial
Chapter 4
4Ć12
Table 3.F
Transfer of Full String
POSITION FILE DATA ASCII Equivalent
001
002
003
004
005
006
007
008
009
010
E011
0000
2031
3233
3435
3637
3839
3031
3233
3435
status word one
status word two
1
2 3
4 5
6 7
8 9
0 1
2 3
4 5
Notice how the 15 characters of the string are stored (right justified), and
that the module added one fill character.
Characters 6, 7, 8, 9, and 0 remain in the module’s input buffer. They will
be erased in step 2 because the procedure clears the input buffer.
2. Enter: 12345678901234567890ABCDEFG[RETURN]
Refer to procedures in section title “Reading Data from Your ASCII
Device” if necessary.
Procedure P1 Set your industrial terminal to alphanumeric mode
Procedure P2 Enter your data
Procedure P3 Set your industrial terminal to PLCĆ2 mode
Procedure P4 Observe how data is stored in the data table
Results Two transfers took place in step 2 (Figure 3.2). The second
transfer wrote over the first, and is displayed in the read block transfer file
(Table 3.G).
Figure 3.2
Division of Data Between Two Transfers
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 A B C D E F G
1st transfer
15 characters
2nd transfer
terminated by [RETURN]
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