Hello, I've got a Johnsford SVH-1000 with Fanuc18i-MB controller. I enter in M06T7 and the spindle moves to the correct position but just keeps spinning.

Will run indefinitely with no errors.

It seems like it's trying to orient itself but can't find it.

I've looked at the 4077 and 4031 parameters and there are values of 1705 and 140 respectively.

The ATC has not been used in about a year and it wasn't until yesterday that I tried to get it going again.

I can tell you that the last maintenance guy changed a parameter or PLC function bit or PLC timer to make the machine ignore or skip tool change commands or maybe even a physical switch, plug.

In that time it has had a new spindle installed as well. Any help would be appreciated.