1070 HEIDENHAIN Technical Manual MANUALplus 620
Saving the
determined field
angle
The determined field angle is automatically entered in MP_motPhiRef.
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 MP_motEncSerialNumber.
An error message appears if the current identification does not match the
entry in MP_motEncSerialNumber:
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
MP_motPhiRef.
When using an incremental encoder, the error message MP2257.<index>
incorrect (ID=$<identification>) appears. The field angle from
MP_motPhiRef and the new identification (ID=$<identification>) for
MP_motEncSerialNumber can only be assumed after determining that the
same drive is meant (e.g. after changing controls).
MP_motPhiRef
Determined field angle
Available from NCK software version: 597 110-01.
Format: Numerical value
Input: Automatic determination and entry by interpolator in the
operating mode for determining the field angle.
0: Field angle does not need to be determined, or has not been
determined
Default: 0
Access: LEVEL3
Reaction: RESET
MP_motEncSerialNumber
Control or encoder identification for the field angle from
MP_motPhiRef
Available from NCK software version: 597 110-01.
Format: Numerical value
Input: 0: Field angle does not need to be determined, or has not been
determined
Default: No value, parameter optional
Access: LEVEL3
Reaction: RESET
In all other cases the field angle must be determined anew, since otherwise
uncontrolled drive motions could occur!
You can force a new field angle determination be entering
MP_motPhiRef = 0 (for example, after exchanging a motor or encoder).
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