Haas Alarm: 150 (M) Z AND TOOL INTERLOCKED – Tool changer not at home and either the Z or A or B axis (or any combination) is not at machine zero position. If RESET, E-STOP, or POWER OFF occurs during tool change, Z-axis motion and tool changer motion may not be safe. Check the position of the tool changer and remove the tool if possible. Re-initialize with the AUTO ALL AXES button but be sure that the pocket facing the spindle afterwards does not contain a tool. For machines initialized as VR parameters 212 and 213 tool change offset need to be set and parameters 269 and 270 Bit 4 both need to be 1 for a tool change to occur without this alarm. This alarm can occur after a software upgrade with incorrect parameters.