simulation

My experience with Fanuc's dry run button has shown me it can be a very dangerous button depending on the machine's configuration. I have found that if any of the axis that are disabled in the dry run are not in the exact same commanded position at the start of dry run execution as they will be when you turn off the dry run, those axis will be permanently offset by the difference in position with no indication of this offset or way to cancel it except to power cycle and restart the cnc.

What do you think? The button is dangerous,
or the button has a bug and the bug is dangerous.

I'm not sure Fanuc would call it a bug, but it is a "feature" that has been with Fanuc's controls far longer than I've been involved with CNC. (Maybe longer than I've been alive.) I've seen it mentioned explicitly in some machine manuals never to use the dry run or z inhibit buttons, Funny, if the machine builder was of that opinion, then why did they even install those buttons?image missing /media/kunena/emoticons/unsure.png

Also the Fanucs I've worked with will have the same offset problem if you make the mistake of jogging an axis while a program cycle is paused and don't jog it back to where you began..

but dryrun is insert in master or not? because in mine 2.9.1 not find cmd ... not check 2.10.0 ... regards

The dryrun feature has not been merged due to a lack of user feedback at the time. It's certainly something I would have liked to be included, particularly with non-trivial kinematics but I was not aware of it at the time.