Vern,
Hit current commands, the page up twice, and you should see a screen with spindle loads for a particular tool. These can all be reset, and allows you to set a maximum for each tool number. Then in settings go to parameter 84, and you can set different actions for the machine to take when you reach the preset limits(beep, autofeed, feedhold, alarm). If everything is set to zero maximum nothing will happen. I've used it a few times it it's not too bad. Worked for what I needed it for.
Hope this answers your question.
"It's only funny until some one get's hurt, and then it's just hilarious!!" Mike Patton - Faith No More Ricochet