Hi there. This alarm is triggered when the interlock signal to lock the start of the cutting program block has been input. There could be several reasons for this alarm: *Spindle Speed*: This alarm can occur when the spindle is not up (or down) to the programmed cutting speed. *Coolant Status*: The alarm can be related to the coolant status. If the coolant is off when it should be on, the machine might trigger this alarm. *Tool Parameters*: If your machine has an Automatic Tool Changer (ATC) and knows which tool is in its spindle, each tool might have its own spindle speed limit set. *Probing Part*: In some cases, this alarm has been reported during the probing of a part on a Mazak Horizontal machining center with a Matrix Nexus controller and using a Renishaw probe. If this alarm occurs seemingly without cause, it’s recommended to check the sequence program for normal functioning. If the problem persists, you may need to contact your machine’s technical support Regards
