Gentlemen, In 1980 I remember starting in the middle of a program on a Fanuc 5T and GE 1050 mill controls. It was the operators responsibility to get the machine in position and the control prepared to start. On the these controls I could skip lines with a toggle switch or search button. The first thing to do was to position the machine so the start would be safe. I would then position the program (or tape) at the beginning of the program and skip to the beginning of the tool section where I wanted to start. In single block I would then skip lines I didn't want to run and run lines I wanted to run. I had to read the spindle speed, spindle start, any prep codes (G90, G91, etc) I needed to be in effect. To me, this seemed very straight forward and easy. I seldom had a problem with it. The way EMC2 works now is a dream compared to the way I learned. I can envision program situations where this may be complicated. Macros, do loops, etc. I don't program in that fashion just for that reason. BUT!!!!! EMC2 is open software. If you want a feature - have at it. You will find help beyond belief from the developers and others. You will have to put in time and effort but then you will have what you want. The developers and others are not paid to do this. Their time is freely given out of their lives. Any heartache anyone has for a feature not having been implemented is misguided. There my be some control software that has the feature you desire. They are probably not free. They are probably not open. I wanted to be able to geometrically compensate my 5 axis mill. This was not something in the heart and mind of any of the developers. I understood that from the start. I wrote it. ANY question I asked was answered, I was helped with learning where to find things. I was helped with what to look for. I was helped with advice in what to watch out for. In short, it took me a year of time and a lot of hours of development but with the assistance (answering my questions) of the developers and others I now have geometric compensation on my 5 axis mill. I understand it because I wrote it. I understand EMC2 MUCH better because of the help I received. You want something - GO FOR IT. You will find the people involved will go out of their way to assist you. They just won't do the whole project for you. This is the best of all worlds. The software is open. The people are helpful. Try this with any commercial control - HAH. The EMC2 guys are intelligent, fast and above all helpful. just my 2 cents thanks Stuart
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