Siemens SINUMERIK 840D Function Manual page 691

SD42692 $SC_JOG_CIRCLE_MODE (jog circle mode)
Bit
2
Circle segment machining
The start and end angles for defining a circle segment that limits the operating range are set in
the setting data:
SD42693 $SC_JOG_CIRCLE_START_ANGLE (circle start angle)
SD42694 $SC_JOG_CIRCLE_END_ANGLE (circle end angle)
The angle data refers to the abscissa of the active plane.
The direction from the start to the end angle is specified in the setting data:
SD42692 $SC_JOG_CIRCLE_MODE (jog circle mode)
Bit
0
Note
If the start and end angle are equal to zero, full circles can be traversed without limitation.
Allowance for tool radius
The consideration of the tool radius can be selected via the following setting data:
SD42692 $SC_JOG_CIRCLE_MODE (jog circle mode)
Bit
1
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Value Meaning
0 Internal machining takes place.
The circle radius in SD42691 is the maximum possible radius.
1 External machining takes place.
The circle radius in SD42691 is the minimum possible radius.
Value Meaning
0 The direction from the start to the end angle is counterclockwise.
1 The direction from the start to the end angle is clockwise.
Value Meaning
0 When monitoring the operating range limits (define circular arc; for circle segment
machining also the limits that result from the start and end angle), the tool radius is not
considered (basic setting).
1 When monitoring the operating range limits, the tool radius is considered.
H1: Manual traversing
17.11 Circular travel in JOG
691