Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 125)

ASCII I/O Module Tutorial
Chapter 4
4Ć51
Verify that this message file will display the diagnostic codes as shown.
1. Set your initialization words as follows:
RG mode, 4 initialization words, 300 baud IW1 = 0007
4 BCD characters/word, 32 characters/string IW2 = 2032
End-of-string delimiter is a carriage return IW3 = OD00
BCD delimiter is a colon (:) IW4 = 3A00
Display The initialization word file is displayed in hex as follows:
RADIX = %H START = WO007:0000
WORD
#
00000
0
0000
1
0000
2
0007
3
2032
4
0D00
5
3A00
2. Writing over the previous data, load the message into file O6:0 (hex
display) as shown above. Load diagnostic codes into display words
6 and 7; 14 and 15; 22 and 23.
Refer to procedures P3 and P5 from section titled “Writing Data To Your
ASCII Device” (chapter 1).
Procedure P3 Connect the 1775ĆCAT cable, and set the industrial terminal
to PLCĆ3 mode
Procedure P5 Load data into the file O6:0
3. Transfer your message for display on the industrial terminal. Refer
to the procedures in section titled “Writing Data to Your ASCII
Device” (chapter 1).
Procedure P1 Connect the 1770ĆCB cable, and set the industrial terminal
to alphanumeric mode (check parameters)
Procedure P6 Enable the MVF instruction. With the PLCĆ3 in run monitor,
enter I001:04 and enable that bit; then I001:02 and enable
that bit (in that order)
Results The industrial terminal displays the column of diagnostic codes
at the left of the screen.
123245678
ABCD4321
FACEBAC2