Siemens SINUMERIK 840D sl Function Manual page 204

H1: Manual and handwheel travel
4.11 Circular travel in JOG
Bit
6
7
Bit
6
7
Coordinates of center of circle as radius value
In basic setting, the specified coordinate of an axis is always a diameter value when diameter
programming is active. This can be changed for specifying the center of circle coordinates for
circular traversing in JOG via the following machine data:
MD20360 $MC_TOOL_PARAMETER_DEF_MASK (definition of the tool parameters)
Bit
13
Center of circle
The center of the circle to be traversed is set in the setting data:
SD42690 $SC_JOG_CIRCLE_CENTRE (circle center point)
The coordinate data refers to the WCS. It can be a diameter or radius value (depending on
the setting in the MD20360 Bit 13).
Only the center point coordinates of the geometry axes of the active plane are evaluated, not
the coordinates of the geometry axis that is perpendicular to the plane.
Circle radius
The radius of the maximum circle for internal machining or of the minimum circle for external
machining is set in the setting data:
SD42691 $SC_JOG_CIRCLE_RADIUS (circle radius)
The radius that is specified refers to the WCS.
Internal or external machining
The machining mode (internal or external machining) is defined in the setting data:
204
Value Meaning
0 Traversing of the 2nd geometry axis of the active plane to plus always takes place in
the direction of the limiting circle. I.e. the radius is increased for internal machining and
1
decreased for external machining.
Value Meaning
1 Traversing of the 2nd geometry axis of the active plane to minus always takes place
in the direction of the limiting circle. I.e. the radius is increased for internal machining
1
and decreased for external machining.
Value Meaning
0 For circular travel in JOG, the center of circle coordinate is a diameter value (basic
setting).
1 For circular travel in JOG, the center of circle coordinate is always a radius value.
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions