I also have 2 Matsuura mills, on one of them I also got the 400 seq Alarm.
I replace the limit switch on top of the carosel tool changer. It has 2 setings on it, if it gose to far it causes the alarm. Now if you can help me I am having trouble rigid tapping with a 5/8-20 tap. I have tried all the G-Codes I can remeber but nothing. Do you have any ideas?