mICROLOGIX 1500

Maurice

Member
Join Date
Oct 2002
Location
Woodstock,IL
Posts
2
Micrologix1500 Post #2

I am using Micrologix 1500 to control an oven. Haw can I stock few integer or real in the memory so after power lost I can recover these data?
 
Yo, Maurice,

Basic idea: set up enough integer or floating point (real) words to hold the data; then program a MOV (move) command to store each SOURCE word into each DESTINATION word. Or if all of the SOURCE words are in a single consecutive row, then you can use a COP (copy) command to move more than one word at a time.

If you need more help than this, post again with some specific example addresses - and tell us WHEN you want to store the data (example: when an operator presses a button, once every hour, etc.)

I'm just guessing but it looks like you want to continuously update the data while the processor is running - but then be able to view the "latest-just-before-shutdown" data when the processor is restarted after a power down situation. If this is the case, check out the S:1/15 "first pass" bit and think about using it to "latch" a "do not disturb" bit (example: B3/45). Then use B3/45 to condition the collection rungs. Done correctly, this approach would save the latest data - and, after a processor shutdown, not overwrite the data until after you manually reset the "do not disturb" bit.

Friendly advice: In the future, spend a little more time writing (and proofreading) your questions. You'll get better answers and save time in the long run. Hope this helps.
 
Micrologix 1500

Thank's Ron excellent idea.
I'll be more descriptive in the future it was the first time and I felt a little reticent.
 

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