Owner's manual

ASCII I/O Module Tutorial
Chapter 4
451
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 ST AR T = 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 1775CA T cable, and set the industrial terminal
to PLC3 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 1770CB cable, and set the industrial terminal
to alphanumeric mode (check parameters)
Procedure P6 Enable the MVF instruction. With the PLC3 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
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