Siemens SINUMERIK 840D sl Function Manual page 52

Detailed description
3.3 System variables for synchronized actions
$AC_BLOCKTYPE and $AC_BLOCKTYPEINFO
The system variable $AC_BLOCKTYPE contains the block type or the ID for the function that
generated the block.
The system variable $AC_BLOCKTYPEINFO contains, in addition to the block type (thousands
position), the function-specific cause for the generation of the intermediate block.
$AC_BLOCKTYPE
Value Meaning: Current block has been gener‐
ated because of ...
0 Programmed block!
1 NC as intermediate block
2 Chamfer/rounding
3 Smooth approach/retraction (SAR)
4 Tool offset
5 Corner rounding
6 Tangential tracking (TLIFT)
7 Path segmentation
8 Compile cycle
9 Path-relative orientation interpolation (OR‐
IPATH/ORIROTC)
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$AC_BLOCKTYPEINFO
Value Meaning
- -
1000 Contains no further information
2001 Straight line
2002 Circle
3001 Approach with straight line
3002 Approach with quadrant
3003 Approach with semicircle
4001 Approach block after STOPRE
4002 Connection blocks if intersection point not found
4003 Point-type circle on inner corners
(on TRACYL only)
4004 Bypass circle (or conical cut) at outer corners
4005 Approach blocks for offset suppression
4006 Approach blocks on repeated TRC activation
4007 Block split due to excessive curvature
4008 Compensation blocks for 3D front milling (tool vector parallel
to plane vector)
5001 Rounding contour through G641
5002 Rounding contour through G642
5003 Rounding contour through G643
5004 Rounding contour through G644
6001 Linear movement of the tangential axis without lift movement
6002 Non-linear movement of the tangential axis (polynomial)
without lift movement
6003 Lift movement: Tangential axis and lift movement start simul‐
taneously
6004 Lift movement: Tangential axis does not start until a certain
lift position is reached
7001 Programmed path segmentation is active without punching
or nibbling
7002 Programmed path segmentation with active punching or nib‐
bling
7003 Automatically, internally generated path segmentation
x x: ID of the compile cycle application that generated the block
9000 Interpolation of the tool orientation with ORIPATH
9001 Interpolation of the rotation of the tool with ORIROTC
Function Manual, 08/2018, 6FC5397-5BP40-6BA2
Synchronized actions