12/2/2014 3:08 PM | |
Posts: 1058 Rating: (93) |
^ Hello William, sorry, I did not know that GRAPH cannt be used with S7-1200. But a sequence can be programmed as a ladder as well, its just more work and of course not so well arranged as in GRAPH. Correct me, if I overlook something, but I basically see the problem as a sequence, consisting of many stages, where each stage is one of 5 alternate subsequences (tasks). For each stage there will be a parameter set in a DB. So there would be a DB for parameters of first stage. To which task it will apply is defined by a recipe value that defines the task of first stage. It could even be defined by a parameter, that the selected task has to be repeated for a certain number of times. Then the next recipe value determines the alternate task for the second stage. Second stage parameter set will be in DB for second stage, and so on. Thus, If I understood it right, you would get a sequence consisting of a certain maximum amount of stages. Each stage has its parameter DB and consists of an alternate of 5 subsequences. Which alternate in what stage has to be done is determined by the recipe, by setting a stage task value for each stage in recipe. Thus you could define any combination of the 5 tasks with different parameters and could even repeat a task within the same stage, but then with same parameters. Each task could be programmed as a sequence only once and then be called by the recipe sequence, as the task would never run parallel as I understood. I hope I could explain my idea and have not overlooked something. regards |
Last edited by: eisenpferdreiter at: 12/2/2014 3:29 PM |
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This contribution was helpful to1 thankful Users |
12/6/2014 12:08 PM | |
Posts: 21 Rating: (0) |
Hello All ! Thanks for all your help ! I've understood all your guidelines and build a Ladder program for my work by using only one DB in which defining all the Recipes (35) as STRUCT and Steps (70) as there ARRAYS and parameters respectively. I've also presented this project to my Boss and he is happy with my work thanks to you guys :-) But still it has a problem which they've not notices but i know it :-P
[snip] ... -------- new question split to a seperate thread with the subject saveing my recipes, STEPS and PARAMETERS permanently |
Last edited by: Min_Moderator at: 12/8/2014 9:29 AMLast edited by: CS Moderator at: 12/7/2014 7:56 PMsplitting |
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