Posted 24 Apr 2017 Dealing with programs with TT pulse On/Off bits which am battling to find the timers they are from, anyone with information as to how I go about this. Cross referencing is not helping as I am only getting the bits location. The program has got some batch programming which am not very much familiar with on top of the usual LAD Share this post Link to post Share on other sites
Posted 24 Apr 2017 (edited) What PLC are you using? Is that the complete address, just "TT"? A little more info and maybe post the program if you can. Edited 24 Apr 2017 by Mickey Share this post Link to post Share on other sites
Posted 24 Apr 2017 Please see attached the rung and where the cursor is... Share this post Link to post Share on other sites
Posted 24 Apr 2017 7 hours ago, &Novice said: Please see attached the rung and where the cursor is... No attachment, try again. Share this post Link to post Share on other sites
Posted 25 Apr 2017 Sorry please see attached. And when I cross reference is get the other screen shot... Share this post Link to post Share on other sites
Posted 25 Apr 2017 Sorry, but I cannot see that. Maybe if you post the program, someone with that software will be able to help. It appears to be a Logix5000 program. I do not have that software. Share this post Link to post Share on other sites
Posted 25 Apr 2017 Search for the base timer name without the '.TT' Share this post Link to post Share on other sites
Posted 25 Apr 2017 If you do a cross-reference on the x.TT bit, it should show the timer instruction. You're looking for TON, TOF, etc. under the "Element" column. Here's an example I ran by rt-clicking on an instruction that was using SnubberDown_Time.EN. You should get a similar result for your TT bit. In this case, it's used as an on-delay timer (TON). Share this post Link to post Share on other sites
Posted 19 May 2017 Good day all, been hectic. Please see attached a video clip of the coding and how I am doing the search for the timer. Also please note that the code has got phase managing in it Share this post Link to post Share on other sites
Posted 19 May 2017 Good day all, been hectic. Please see attached a video clip of the coding and how I am doing the search for the timer. Also please note that the code has got phase managing in it Share this post Link to post Share on other sites
Posted 19 May 2017 Cross referencing takes me to 4 locations and of the 4, 2 are MOV instructions and the other 2 are XIO/XIC Share this post Link to post Share on other sites
Posted 19 May 2017 If those are really the only places in the code where that timer address shows up, it's not being used. The XIO/XIC instructions will never change state without there being a TON/TOF/RTO instruction somewhere. The MOV instructions probably set up the timer preset and maybe the accumulator, but I can't really tell from your picture. If you can post the ACD file (or send it via PM or email), that would help one of us help you. Share this post Link to post Share on other sites