Mitsubishi Electric MELSEC-L Series, User Manual

Page: 1020 / 1040

Appendix - 72
Appendices
(2) OPR
The method and some operation of the OPR using AlphaStep/5-phase
differ from those of the OPR using the servo amplifier.
(a) OPR method that can be used
Pr.43
OPR method
Possible/Not possible
Near-point dog method
* 1
Count method 1)
* 1
Count method 2)
Data set method
Scale origin signal detection method
* 1
Driver OPR method
: Possible : Not possible
1: The error "OPR method invalid" (error code: 232) occurs and OPR is not
performed.
(b) Driver OPR method
The following shows an operation outline of the OPR method "Driver
OPR method".
The OPR is executed based on the positioning pattern set in
AlphaStep/5-phase. Set the setting values of OPR in the parameters of
AlphaStep/5-phase. The operation of OPR and "b0: Lower limit", "b1:
Upper limit" and "b6: Near-point dog signal" of "
Pr.22
Input signal logic
selection
" depend on the specification of AlphaStep/5-phase, so that
refer to the AlphaStep/5-phase manual and match the settings. For
parameters that can be set by the Simple Motion module, refer to
Section 5.1.3 "Setting items for OPR parameters".
This method is not available except for the stepping driver. If the
method is executed, the error "OPR method invalid" (error code: 232)
occurs.
(c) Backlash compensation after the driver OPR method
When "
Pr.11
Backlash compensation amount
" is set in the Simple Motion
module, whether the backlash compensation is necessary or not is
judged from "
Pr.44
OPR direction
" of the Simple Motion module in the
axis operation such as positioning after the driver OPR. When the
positioning is executed in the same direction as "
Pr.44
OPR direction
",
the backlash compensation is not executed. However, when the
positioning is executed in the reverse direction against "
Pr.44
OPR
direction
", the backlash compensation is executed.
Note that the OPR is executed based on the OPR direction of the
parameter of AlphaStep/5-phase during the driver OPR. Therefore, set
the same direction to "
Pr.44
OPR direction
" of the Simple Motion module
and
the OPR direction of the parameter of AlphaStep/5-phase.