Siemens SINUMERIK 840D sl Commissioning Manual page 480

Configuring cycles
22.5 Turning
Meaning of the axes
MD52206 $MCS_AXIS_USAGE[n]
A detailed description of MD52006 is provided in Chapter "Activating turning/milling/drilling
technologies (Page 451)".
Traversing direction
In order that the user interface and cycles know in which direction the spindles and rotary
axes rotate, the following settings must be made.
You set the direction of rotation of an NC rotary axis via MD32100 $MA_AX_MOTION_DIR.
MD32100 $MA_AX_MOTION_DIR
-1
0, 1
Defining the direction of rotation
You set the directions of rotation for the user interface in the following machine data:
MD52207 $MCS_AXIS_USAGE_ATTRIB[n]
Bit 3
Bit 4
Bit 5
474
Direction reversal
No direction reversal
Displayed positive direction of rotation is counter-clockwise (for rotary axes)
The view must be from the inside of the machine (operator's view) to the axis of rotation.
Displayed direction of rotation for M3 is counter-clockwise (for spindles)
This bit can be set from the operator's view or according to DIN.
Direction of rotation for M3 corresponds to minus rotary axis (for spindles)
This bit must be set analogous to PLC bit DBn.DBX17.6!
Meaning of the axes in the channel
[n] channel axis number
Traversing direction
Attributes of the axes in the channel
[n] channel axis number
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
SINUMERIK Operate (IM9)