Gentlemen, I currently have machine tools with Fanuc controls that use the G54 in both fashions. Depending on how the builder set the parameters one machine uses the G54 as a common offset. The common offset changes the position of every other offset by the value in the G54 registers. Another machine uses the G54 offset as just another offset having no affect on any other offset. In 1980/1981 when I was running my first CNC mill (a Monarch VMC 75 with GE 1050 control) the service man from Monarch drilled, bored and reamed a hole in the table after the machine was set up. This was to pin the subplate to the work table. Any offsets used on the subplate were referenced to the pin. If the pin moved in reference to the machine home then by dialing in the pin and setting the G54 offset we could have all the other offset correct without having to change any of them. That was the plan. We never used it as such. We never used the G54 because of this 'feature'. I was used to never using G54 and was shocked to see others use it when I left that shop. I like it better as just another offset but it can be useful as a common (master) offset. thanks Stuart
------------------------------------------------------------------------- Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
