I understand the ‘Jump to Line’ useage. But I still thinking that there should be a way to send Z back to Zer Ref. position when power is lost. I have a UPS that is capabile to send Loss of Power Signals to any controller. So i was thinking that the Masso Controller if this signal went high, so to speal. Z would retract. Saving not only the tool but the work piece. There are many instances that this M Code and G Code could interact in the correct manner the real question is if the Masso can be controlled in the manner. Maybe embedding this lines of code into a Macro if signals are high. Hey O.F what’s up