Enhanced Level Commands
4.6 Polar coordinate interpolation (G12.1, G13.1)
04.07
4-137
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SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
4.6 Polar coordinate interpolation (G12.1, G13.1)
An interpolation between a rotary axis and a linear axis in the machining plane is
switched on and off through G12.1 and G13.1. A further linear axis is perpendicular
to this plane.
Linear or circular interpolation using coordinates in a Cartesian coordinate system
is applied in order to program a linear axis together with a rotary axis (virtual axis).
This function corresponds to the TRANSMIT function within Siemens mode.
Note
For a detailed description of the TRANSMIT function see “SINUMERIK
840D/810D(CCU2)/FM” NC Functional Description, Extended Functions” chapter
“Kinematic Transformation (M1)” and “SINUMERIK 840D/810D/FM--NC Program-
ming Guide Production Scheduling (PGA)” chapter “Transformation”.
Format
G12.1; Polar coordinate interpolation mode ON
...
...
G13.1; Polar coordinate interpolation mode cancel
!
Caution
When specifying G12.1, the plane (G17, G18, G19) which has been used pre-
viously is canceled.
NC Reset will cancel the polar coordinate interpolation mode and re--establish the
previously selected plane.
Possible G codes in the polar coordinate interpolation mode
G01 Linear interpolation
G02, G03 Circular interpolation
G04 Dwell, Exact stop
G40, G41, G42 Cutter compensation
G65, G66, G67 Custom macro command
G90, G91 Absolute command, incremental command
G94, G95 Feed per minute, feed per revolution
Using G02, G03 in the polar coordinate plane
The addresses used for the specification of the radius of an arc with respect to cir-
cular interpolation (G02 or G03) applied to a polar coordinate interpolation plane
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