xaviosjm Posted July 7, 2015 Report Share Posted July 7, 2015 Hi, everyone I would like to know if you can give me ideas about how to do the following program. It is a table which I want to see in the oplc screen Samba 7 This table has to be filled as specified in ASTM D1709 (Plastic sheets impact resistance evaluation) 1)So at first point I assume a initial value of weight that could cause the fault of a specific sheet , and the variable weight (to select between 5% and 15% of initial weight, it has to be 5gr multiple) and test the firs sheet. 2) If the first sheet fault, for the following sheet to test i have to decrease the weight (if not i have to increase). Each result is identified by fault: X, no fault: O. The fault or not fault condition are registered by 2 buttons in the screen cause the damage evaluation is only visual 3) And so on increasing or decreasing weight of test if last test result was fault or not, till I obtain a matrix (3x20 to 6x20, consecutive rows, and maybe non consecutive columns) in wich there are 10 faults and 10 no faults. The minimum quantity (ideal quantity) of tests are 20 (10 faults and 10 don´t fault). Example 1: A ideal test in which after carry out 20 tests (20 films tested) I obtained 10 faults and 10 no faults using 4 consecutive weights (between 3 and 6). Initial weight: 280 gr variable weight: 15 gr See attached file Example 2: For this more real example I had to develop 22 tests (22 films tested) to have combination of 10 faults and 10 no faults, using 5 consecutive weights (between 3 and 6 consecutive weights). So I have to discard tests #2 and #4 Initial weight: 235 gr variable weight: 15 gr See attached file 4) Finally I have to math the impact weight resistance that represents to the batch of plastic films I hope you can give me ideas to develop this program Thank you very much in advance Quote Link to comment Share on other sites More sharing options...
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