Hello again, We have been plagued with this problem for a long time now and maybe someone here has run into this alarm. We have several EMCO turn 320's (yea- old) and every single one of them at one time or another gets a "tool turret index failure" alarm. this is also sometimes along with a encoder fault. there are 2 of our machines that get this alarm quite often but there seems to be no one thing that triggers it. they may run just fine for weeks and then all of a sudden, every time it tries to index, we get the alarm. and then out of nowhere, it just stops throwing the alarms. our maintenance crew has worked on this over and over but nothing seems to do the trick. they have replaced the turrets, boards etc but it still does it. has anyone had this problem?