On 08/09/2018 03:58 PM, Greg Bentzinger via Emc-users wrote:
Mark; Way back when I was making the transition from Slackware to Red Hat I teamed up with another local fellow on a little project. He was much better with disciplined technique than I was. He kept a spiral notebook for each PC and would copy down the entire line, file path and date/time before doing any edit so that when he broke it he would have the exact syntax to repair the damage. I had learned that I needed to take notes, but he had it down to a fine science. These written notes with LCNC I find to be a life saver when upgrading between major versions, esp if skipping a version. (2.4 to 2.6) RE Z axis lock - This function worked perfect on OKUMA OSP controls - likely due to the use of absolute position encoders. When running a program with the Z lock the machine would still execute tool changes and run the spindle & coolant unless you had also engaged the STM lock. The easy way of just setting your Z0 higher is not so easy for some machines with less than 5 inches Z travel. Routers and knee mills with a Z quill come to mind.
Oh, I do have an extensive changelog book that goes back to my first EMC2 computer. I was a system and network admin at the Naval Research Lab in DC for numerous computers running VMS, Unix and Linux. Had my hack books for those machines too. The only shortcoming to using those books is one has to remember to actually write down what one did. Like the CRS moment of making that minor change on my machine's computer, I forgot to write it down. Goes back also to what I said - don't make changes late at night when you're tired. It'll come back to bite you in the ass.
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