Siemens SINUMERIK 828D Function Manual page 689

Frame chaining
Frame components or complete frames can be combined using the concatenation operator ":" to create a
complete frame. For instance, the actual frame $P_ACTFRAME comprises chaining the complete basic frame,
adjustable frame, the systems frames and the programmable frame:
$P_ACTFRAME =
Frames with G91
Incremental programming with G91 is defined such that the compensation value is traversed additively to the
incrementally programmed value when a zero offset is selected.
The behavior depends on the setting in the setting data:
SD42440 $SC_FRAME_OFFSET_INCR_PROG (zero offset in frames)
Value Meaning
1 Zero offset is applied on FRAME and incremental programming of an axis (= default setting).
0 Only the programmed path is traversed.
Suppression of frames
The actual frames can be suppressed with the following operations:
Comman
Meaning
d
Suppression of the actual work offset (non-modal)
G53
Suppression of the actual frame including basic frame
G153
Suppression of actual work offset, including programmed offsets, system frames,
SUPA
handwheel offsets (DRF), external work offset, and overlaid movement
NCU global basic frames
Using NCU global basic frames, frames for other channels can be pre-assigned from a channel.
Properties of the NCU global basic frames:
• Can be read and written from all channels.
• Can be activated only in the channels
• Offsets, scaling and mirroring for channel and machine axes
All global and channel-specific basic frames are chained and therefore a complete basic frame is obtained. As
standard, there is at least one basic frame available per channel.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
$P_PARTFRAME : $P_SETFRAME : $P_EXTFRAME :
$P_ISO1FRAME : $P_ISO2FRAME : $P_ISO3FRAME :
$P_ACTBFRAME : $P_IFRAME : $P_TOOLFRAME :
$P_WPFRAME : $P_TRAFRAME: $P_PFRAME
$P_ISO4FRAME : $P_CYCFRAME
K2: Axis Types, Coordinate Systems, Frames
10.1 Brief description
689