Siemens SINUMERIK 840D sl Function Manual page 675

Two turning tools with one reference point with a tool position opposite to the orientation
In the case of the tool position of two turning tools with one reference point, not only are the
input variables of measurement type 23 evaluated but also the values of the following input
variables:
Approach direction and tool orientation +x
$AC_MEAS_TOOL_MASK = 0x2 + 0x200
$AC_MEAS_DIR_APPROACH = 0
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
8.4 Setting zeros, workpiece measuring and tool measuring
Approach direction and tool orientation -x
$AC_MEAS_TOOL_MASK = 0x40
$AC_MEAS_DIR_APPROACH = 1
M5: Measuring
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