Takisawa E-110

we get an alarm 300 APC: 3 AXIS NEED ZRN

We have changed the parameters 1250. 1401. 1860. 1861. 5002. 5003. after the list of parameters that came with the machine when it was new. We have restarted the machine and zeroreturned X and Z axis. But we still have the 300 APC alarm about the 3 axis. how do we zeroreturn the third axis?