Siemens SINUMERIK 828D Function Manual page 35

Channel-specific rapid traverse override
With G0 blocks (rapid traverse), the rapid traverse feedrate can also be influenced via the
setting data SD42122 $SC_OVR_RAPID_FACTOR in addition to the system variable
$AC_OVR.
Requirement: Release of the rapid traverse override via the user interface.
Axis-specific override
The axial feedrate can be changed via the axis-specific system variable $AA_OVR:
Data type:
Unit:
Range of
values:
The system variable $AA_OVR must be written in every interpolation cycle, otherwise the
value "100%" is effective.
PLC override
Channel-specific override
The channel-specific override (DB21, ... DBB4) set via the machine control panel can be
read via the channel-specific system variable $AC_PLC_OVR:
Data type:
Unit:
Range of
values:
Axis-specific override
The axis-specific override (DB31, ... DBB0) set via the machine control panel can be read via
the axis-specific system variable $AA_PLC_OVR:
Data type:
Unit:
Range of
values:
Synchronized actions
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
REAL
%
0.0 to machine data
• For binary-coded override switch
MD12100 $MN_OVR_FACTOR_LIMIT_BIN
• For gray-coded override switch
MD12030 $MN_OVR_FACTOR_FEEDRATE[30]
REAL
%
0.0 to maximum value
REAL
%
0.0 to maximum value
2.3 System variables for synchronized actions
Detailed description
35