I'm trying to setup a MicroLogix 1100 PLC to Write ASCII strings out to a display. I'm not sure how to deal with control characters.

The following is the format of the string:

Format: <SOH>1<STX>65;reason ID number<ETX>
Example: <SOH>1<STX>65;11<ETX> The value 11 is the only variable I need to change.

<SOH> = Start of Header control code 01Hex
<STX> = Start of Text control code 02Hex
<ETX> = End of Text control code 03Hex

Any suggestions?

- Joe

You could use move isntructions and brute force data table manipluation to load ST9:0 with <SOH>1<STX>65; Then AIC your integer value {from N7:1} into ST9:1 ; Then use move isntructions and brute force data table manipluation to load ST9:2 with <ETX> Finally use ACN to combine ST9:0 and ST9:1 into ST9:3 followed by use ACN to combine ST9:3 and ST9:2 into ST9:4. Then write your ST9:4 result out the serial port with AWT.

1. Create ST9 with at least 5 strings

2. Open the string table

3. Double click on ST9:0

(In the following the ^ symbol is the shift-6, not the CTRL button)

4. Type exactly the following ^A1^B65;

5. Press Enter

6. Double click ST9:2

7. Type exactly the following ^C

8. Press Enter

Follow BobLfoot's instructions concerning ST9:1 and combining and transmitting.

Thanks. You saved me a bunch of trial and error. Worked like a charm!