664 HEIDENHAIN Technical Manual MANUALplus 620
Direction of
rotation for
spindles with C axis
If a spindle is also to be used as a C axis, the rotational direction of the C axis
must first be set in the parameters MP_signCorrActualVal and
MP_signCorrNominalVal in such a way that the angle moves in the
mathematically positive sense (counterclockwise) if the physical spindle axis
rotates in the mathematically negative sense (i.e. clockwise).
Since, if there is no separate drive for the C axis, the two parameters also
influence the spindle, the rotational direction of the spindle might need to be
corrected if M3 and M4 are used.
Therefore, if the functions M3 and M4 are called, correct the rotational
direction of the spindle in MP_changeTurnDir, as well as the status display
(M3/M4) of the spindle in the dashboard.
MP_signCorrActualVal
Reversal of the algebraic sign of the position encoder signal
Available from NCK software version: 597 110-01.
Format: Selection menu
Selection: on
The algebraic sign of the position encoder is inverted
off
The algebraic sign of the position encoder is not inverted
Default: off
Access: LEVEL3
Reaction: REF
MP_signCorrNominalVal
Reversal of the algebraic sign of the nominal speed value
Available from NCK software version: 597 110-01.
Format: Selection menu
Selection: on
The algebraic sign of the nominal speed value is inverted
off
The algebraic sign of the nominal speed value is not inverted
Default: off
Access: LEVEL3
Reaction: REF
MP_changeTurnDir
Rotational direction reversal with M3 and M4
Available from NCK software version: 597 110-04.
Format: Selection menu
Selection: TRUE
Reversal of rotational direction is active with M3/M4
FALSE
Reversal of rotational direction is not active with M3/M4
Default: TRUE
Access: LEVEL3
Reaction: RUN
The counting direction of the motor encoder for speed control is defined in
the motor table (DIR column). An incorrect entry results in the error
message C3B0 Motor does not rotate <AXIS> appearing.
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