Chapter Three Programming
57
Part 1 Programming
G92 which the function of the reference position is automatically set the coordinate system.
Note: If the workpiece coordinate system setting function is used, all of the parameters No.375
~
378, 440
are set to 0 when the metric input is performed, and all of the parameters No. 379
~
382, 441 are set
to 0 when the inch input is performed.
If the setting value does not 0, the workpiece coordinate systems (1
~
6) offset may occur.
3.5.16 Inch/Metric conversion (G20, G21)
Either inch or metric input can be selected by G code.
Unit
G code
The least input unit
Inch (Inch)
G20
0.0001inch
Mm (Metric)
G21
0.001mm
This two G codes must be specified in an independent block before setting the workpiece
coordinate system at the beginning of the program.
N10 G20
;
N20 G92 X___Y___
;
The following contents vary from the two G codes:
1) Feedrate commanded by F code
2) Position display
3) Offset value
4) Unit of scale for MPG.
5) Movement amount in incremental feed
6) A part of parameters
Note 1: When the power is turned on, the G code is the same as that held before the power was turned off.
Note2: G20 and G21 must not be switched during a program.
Note 3: When the unit system between machine and program are different, the maximum error is the half
of the least movement unit which this error value does not accumulate.
3.5.17 Stored stroke limit (G22, G23)
The movement range of the tool can be restricted by the following two methods.
(Tool can not enter the shadowed area)
Stored stroke limit 1:
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Страница 133: ...Chapter Three Programming 121 Part 1 Programming Rapid traverse Cutting feed 6 G82 Drilling cycle boring ...
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Страница 297: ...Appendix 285 APPENDIX Appendix 1 System Version Display The system version is displayed immediately after power on ...
Страница 371: ...Appendix 11 USB Interface Parameter Transfer Operation ...