Siemens SINUMERIK 840D sl Function Manual page 908

Detailed description
2.4 Frames
TCARR and PAROT
Previously, TCARR has used the basic frame identified by machine data
MD20184 $MC_TOCARR_BASE_FRAME_NUMBER
.
A system frame can be created for TCARR and PAROT alone, in order to avoid conflicts with
systems, which already use all the basic frames.
PAROT,TOROT and TOFRAME have previously changed the rotation component of the
programmable frame. In this case, it is not possible to shut down PAROT or TOROT
separately. On RESET, the programmable frame is deleted, which means the after changing
the operating mode to JOG, the rotation component of PAROT and TOROT is no longer
available. The user must also have unrestricted access to the programmable frame. Frames
produced by PAROT and TOROT must be able to be archived and reloaded via data backup.
The system frame for TCARR and PAROT is configured with bit 2 in machine data
MD28082 $MC_MM_SYSTEM_FRAME_MASK
.
Machine data
MD20184 $MC_TOCARR_BASE_FRAME_NUMBER
is then no longer evaluated.
If the system frame for TCARR is configured, TCARR and PAROT describe that system frame;
otherwise the basic frame identified by machine data
MD20184 $MC_TOCARR_BASE_FRAME_NUMBER
is described.
With kinematics systems of the types P and M, TCARR will enter the table offset of the
orientational toolholder (zero offset resulting from the rotation of the table) as a translation
into the system frame. PAROT converts the system frame such, that a partoriented WCS
results.
The system frames are stored in the SRAM and, therefore, remain stored after Reset. The
system frames also remain active in the case of a mode change.
For the display, the G codes PAROT and TOROT,TOFRAME are each assigned to a separate
G code group.
PAROTOF
PAROTOF is the switch off command for PAROT. This command deletes the rotations in the
system frame for PAROT. In so doing, the rotations in the current $P_PARTFRAME and in
the data management frame $P_PARTFR are deleted. The position of the coordinate system
is then recreated according to TCARR. PAROTOF is in the same G code group as PAROT and
appears, therefore, in the G code display.
TOROT and TOFRAME
The system frame for TOROT and TOFRAME is configured with bit 3 in machine data
MD28082 $MC_MM_SYSTEM_FRAME_MASK
.
This system frame is located before the programmable frame in the frame chain.
The SZS coordinate system is located before the programmable frame.
124
Basic logic functions: Axes, coordinate systems, frames (K2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0