Micrologix 1100 String Data File

[naptime 0]

I have two-character packed ASCII in integer registers N13:0-2. I move the three integers to ST15:1.DATA[0-2] with three MOV instructions with no trouble. I can see the correct data has been moved because it is being displayed in each MOV instruction within the ladder editor. But when I view the ST15 data table ST15:1 is blank, zero length, no characters. Now, if I type any random junk into this blank string, what I type sits there for a second, then the correct string (N13:0-2's data) appears. Does anyone understand this phenomenon I am seeing? What am I not understanding about string data in MLX? I'm more than willing to provide more detail if anyone inquires. Regards, Ryan

[WildPointer 0]

Try moving a 3 into the ST15:0.LEN at the same time you are moving the integer values in to ST15:1.DATA[0-2] and see if this helps.

[naptime 0]

Thank you for your input WP. That proved to be my issue. One bit of clarification for future readers though: .LEN represents the number of characters in the string, therefore I had to use 6, not 3. Thanks again!

[BobLfoot 302]

Welcome to MRPLC Naptime and thanks for sharing your awake time with us. Having your final solution post makes this whole thread very useful.