Determining The Current Override - Siemens Sinumerik 840D sl Programming Manual

Parameters
The tangent angle is always output positive in the range 0.0 to 180.0 degrees. If there is no
following block in the main run, the angle -180.0 degrees is output.
The system variable $AC_TANEB should not be read for blocks generated by the system
(intermediate blocks). The system variable $AC_BLOCKTYPE is used to tell whether it is a
programmed block (main block).
Example
ID=2 EVERY $AC_BLOCKTYPE==0 DO $SR1 = $AC_TANEB
10.4.30

Determining the current override

Function
The current override
(NC component) can be read and written with system variables:
$AA_OVR Axial override
$AC_OVR Path override
in synchronized actions.
The override defined by the PLC is provided for synchronized actions to read in the system
variables:
$AA_PLC_OVR Axial override
$AC_PLC_OVR Path override
The resulting override
is provided for synchronized actions to read in the system variables:
$AA_TOTAL_OVR Axial override
$AC_TOTAL_OVR Path override
The resulting override can be calculated as:
$AA_OVR * $AA_PLC_OVR or
$AC_OVR * $AC_PLC_OVR
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
Motion synchronous actions
10.4 Actions in synchronized actions
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