It's because of the Toshiba Kongsberg scandal. In the late 70's to early 80's there were violations of export controls on advanced machine tools and control electronics, such that the equipment ended up in the USSR via various pathways and less than a year after obtaining the machine tools, Soviet submarines were running quieter thanks to their newly acquired ability to manufacture better propellers with reduced cavitation. Getting that equipment also provided the Soviets with new designs to copy and expand on to enhance their own machine tools.
On Thursday, January 7, 2021, 9:35:34 AM MST, Ralph Stirling <ralph.stirl...@wallawalla.edu> wrote: Our Mori NVX, which has five axis capability (but no rotaries installed), requires a long passcode to be entered after booting if the machine has been moved or the memory backup batteries changed. The passcode is generated by Mori each time based on a random number from the machine. I got really tired of doing this every year when changing the batteries, so wired up a power supply diode-paralleled with the batteries, and tell the control I've changed the batteries just before the one year maintenance interval. This is presumably intended to prevent the machine from being surreptitiously exported to North Korea. One of several reasons I wish I could run the machine on LinuxCNC... _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users