Siemens SINUMERIK 840D sl Function Manual page 744

R2: Rotary axes
13.4 Activating rotary axes
Special machine data
Special rotary-axis machine data may also have to be entered, depending on the application:
MD30310 $MA_ROT_IS_MODULO
MD30320 $MA_DISPLAY_IS_MODULO
MD10210 $MN_INT_INCR_PER_DEG
The following overview lists the possible combinations of these machine data for a rotary axis:
Possible combinations of rotary-axis machine data
MD30300
0
1
1
1
1
0
JOG velocity for rotary axes
SD41130 $SN_JOG_ROT_AX_SET_VELO (JOG speed for rotary axes)
The above setting data can be used to define a valid JOG velocity for all rotary axes (see also
Section "H1: Manual and handwheel travel (Page 147)").
744
MD30310 MD30320
0 0
0 0
0 1
1 1
1 0
0 or 1 0 or 1
Modulo conversion for positioning and program‐
ming
Modulo conversion for position display
Computational resolution for angular positions
Application Comment
permitted
Yes The axis is a linear axis (default).
Yes The axis is a rotary axis; modulo conver‐
sion is not used for positioning, i.e. the
software limit switches are active; the po‐
sition display is absolute.
Yes The axis is a rotary axis; modulo conver‐
sion is not used for positioning, i.e. the
software limit switches are active; the po‐
sition display is modulo;
Application: for axes with an operating
range of +/-1000°, for example
Yes The axis is a rotary axis; positioning is per‐
formed with modulo conversion, i.e. the
software limit switches are inactive, the
operating range is unlimited; the position
display is modulo (setting most frequently
used for rotary axes); axis with/without
working-area limitation can be used.
Yes The axis is a rotary axis; positioning is per‐
formed with modulo conversion, i.e. the
software limit switches are inactive, the
operating range is unlimited; the position
display is absolute; axis with/without work‐
ing-area limitation can be used.
Not recom‐ Axis is not a rotary axis;
mended therefore, the other MD are not evaluated.
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions