2012/9/14 James Isaac <whirl...@live.com>: > >> Date: Thu, 13 Sep 2012 10:46:28 +0300 >> > What I do not understand, how to implement is: > >> Client wants to define some ranges of the lengths and they want > machine to count, >> how many parts fall in particular range and then > save these data to a file. > > > I apologize if I have misunderstood your problem, > or if you have already incorporated these engineering techniques, > but here is my "change your environment" solution :
Ok, I will try to share some more details: 1) there are wood planks with some defects somewhere in the middle, that defect needs to be removed by sawing that particular section out; that by definition means that the operation will create at least 2 usable pieces; 2) I have no influence on the hardware design of the machine, my task is to set up controls - the length of the piece needs to be displayed and number of produced parts have to be counted; 3) and they want not only total number of all parts, but they want to know, how many parts were 800-950 mm long, how many parts were 950-1100 mm long etc. (those numbers are just for example, endpoints of those ranges will be set by operator). The measurement of the length will be done by an encoder, attached to a wheel, which will be turned as material moves under it. Material will be moved manually (do not yet know, how exactly) by operator. I already figured out, how to reset encoder position to start measuring new part, so that is not my concern at the moment. What I do not know and where I would appreciate some advice/hints is - how to save those counted numbers to a file. I have yet to figure, what is better: 1) request operator to press "save" button in vcp panel; 2) update file automatically as soon as any of the counted numbers have incremented - this is better in terms of "power-failure caused loss of data" situation; But if it saves automatically, I do not want to overwrite previous files, especially if there have been several times LinuxCNC has been started in one day - for example, in the morning, then on lunch break system was shut down and then turned on again later. Or even worse - some powerfailure or whatever caused unexpected shutdown and then restarting LinuxCNC and saving to the same file is good as long as it adds the new data below the existing ones, not overwrite them. OTOH I think it is mandatory that all the data, counted in one session should be updated in the same line, not add another line as soon as new part is done. I was looking at that tutorial, shared by John Thornton, but I did not yet get it, how exactly does that "writing to a file" happen. Today I will visit the client (those guys will produce the machine, I do not have access to enduser), so I will try to find out more, how all of this is supposed to be set up. John, thank You for the links! -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Got visibility? Most devs has no idea what their production app looks like. Find out how fast your code is with AppDynamics Lite. http://ad.doubleclick.net/clk;262219671;13503038;y? http://info.appdynamics.com/FreeJavaPerformanceDownload.html _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
