8 - 4
MELSEC-Q
8 OPR CONTROL
8.2 Machine OPR
8.2.1 Outline of the machine OPR operation
Important
Use the OPR retry function when the OP position is not always in the same
direction from the workpiece operation area (when the OP is not set near the upper
or lower limit of the machine).
The machine OPR may not complete unless the OPR retry function is used.
Machine OPR operation
In a machine OPR, a machine OP is established.
None of the address information stored in the QD75, CPU module, or servo is used at
this time. The position mechanically established after the machine OPR is regarded as
the "OP" to be the starting point for positioning control.
The method for establishing an "OP" by a machine OPR differs according to the method
set in "
Pr.43
OPR method".
The following shows the operation when starting a machine OPR.
1)
The machine OPR is started.
2)
The operation starts according to the speed and direction set in the OPR parameters
( Pr.43 to Pr.57 ).
3)
The "OP" is established by the method set in " Pr.43 OPR method", and the
machine stops. (Refer to Sections 8.2.2 to 8.2.8)
4)
If "a" is set as " Pr.45 OP address", "a" will be stored as the current position in the
" Md.20 Current feed value" and " Md.21 Machine feed value" which are
monitoring the position.
5)
The machine OPR is completed.
The "
Pr.45
OP address" is a fixed value set by the user.
M
OP
Near-point dog
Machine OPR
Fig. 8.1 Example of a machine OPR
Содержание Melsec-Q QD75D1
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Страница 693: ...Appendix 7 MELSEC Q APPENDICES Axis address mm inch degree pulse Axis address mm inch degree pulse ...
Страница 699: ...Appendix 13 MELSEC Q APPENDICES Initial value Axis 1 Axis 2 Axis 3 Axis 4 Remarks 0 0 0 1 1 0 0 0 0 0 0 300 11 0 0 ...
Страница 836: ...Appendix 150 MELSEC Q APPENDICES Appendix 14 External dimension drawing 1 QD75P1N Unit mm 23 4 27 4 98 90 46 ...
Страница 837: ...Appendix 151 MELSEC Q APPENDICES 2 QD75P2N Unit mm 23 27 4 90 4 98 46 3 QD75P4N 23 27 4 90 4 98 46 Unit mm ...
Страница 838: ...Appendix 152 MELSEC Q APPENDICES 4 QD75D1N 12 90 23 27 4 Unit mm 98 4 46 5 QD75D2N 90 23 27 4 12 98 4 46 Unit mm ...
Страница 839: ...Appendix 153 MELSEC Q APPENDICES 6 QD75D4N 90 23 27 4 12 98 4 46 Unit mm ...
Страница 840: ...Appendix 154 MELSEC Q APPENDICES 7 QD75P1 QD75P2 QD75P4 27 4 23 98 90 4 46 unit mm ...
Страница 841: ...Appendix 155 MELSEC Q APPENDICES 8 QD75D1 QD75D2 QD75D4 27 4 23 90 12 98 4 46 unit mm ...
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