HEIDENHAIN iTNC 530 HSCI - Saving the Determined Field Angle

1120 HEIDENHAIN Technical Manual iTNC 530 HSCI
7.9.5 Saving the determined field angle
The determined field angle is automatically entered in MP2556.x.
For purposes of reliability and redundancy, either the serial number of the
encoder (only for EnDat interface) or a unique control ID is entered as
identification in MP2257.x.
If the current identification does not match the entry in MP2257.x, an error
message appears:
 When using an encoder with EnDat interface, the error message 8830
EnDat: no field angle <axis> appears. In any case the field angle must be
determined anew, since the encoder does not match the field angle from
MP2256.x
 When using an incremental encoder, the error message MP2257.<index>
incorrect (ID=$<identification>) appears. The field angle from
MP2256.x and the new identification (ID=$<identification>) for
MP2257.x can only be assumed after determining that the same drive is
meant (e.g. after changing controls).
MP2256.x Determined field angle
Input: 0: Field angle does not need to be determined, or has not been
determined
MP2257.x Control or encoder identification for the field angle from
MP2256.x
Input: 0: Field angle does not need to be determined, or has not been
determined
Danger
In all other cases the field angle must be determined anew, since otherwise
uncontrolled drive motions could occur!
Note
You can force a new field angle determination by entering MP2256.x = 0
(for example, after exchanging a motor or encoder).