I am stumped! I have recently gone back in time for the pleasure of setting up and programming the Fanuc 5T control. Everything seems to work fine on the machines exept for the error I receive when using posted code that generates small blend arcs and radius. The same code, (formatted) will run fine on our Fanuc 6t and 21t. I have duplicated this error with a simple face edge break. G00X10989Z-677, G02X7718Z0I-1635K-1635F100. Now here is what stumps me. G00X11281Z-824, G02X7304Z0I-1989K-1989 runs fine, no error. Any experience out there?