I purchased a used Fanuc 21iT on a Mori Seiki SL-3. It makes good parts and seems to run fine and hold tolerance.
The problem I'm having is that after power up, it doesn't zero out after homing Z. The X axis will zero out but the Z axis always pops up 11.8311. I have deleted all programs and offsets. I've tried to do the following that i found in a previous thread but i am confused about the homing methods it describes
1. Set 1815.5 (APC) = 0, 1815.4 (APZ) = 0, 1860=0, 1861=0 for the given axis
2. Power down
3. Power up
4. Set APC=1
5. Power down
6. Power up
7. Home the absolute axis. This can be accomplished with either manual referencing (if they have home switches), dogless (if they have the DLZ parameter enabled), double-bump torque method, or by MDI setting. Go with the method recommended by the machine tool builder. APZ should be 1 when completed. New values will automatically be loaded into par 1860 and 1861.
any ideas?