Rotary Axes - Siemens SINUMERIK 840D sl Commissioning Manual

NCK start-up
10.5 Parameterize axis data
10.5.4

Rotary axes

Rotary axes
A machine axis is parameterized as a rotary axis in
● MD30300 IS_ROT_AX (rotary axis) = 1
The machine data is a scaling machine data. A change results in a conversion of all machine
data of the machine axis with length-related units.
For the recommended procedure with respect to scaling machine data, please refer to
Subsection "Modifying Scaling Machine Data" .
Modulo display
Machine data
● MD30320 DISPLAY_IS_MODULO (modulo 360 degrees display for rotary axes)
is used to display the rotary axis position modulo 360 degrees.
Endlessly rotating rotary axis/modulo axis
The machine data
● MD30310 ROT_IS_MODULO (modulo conversion for rotary axis)
is used to traverse the rotary axis modulo 360 degrees. The limit switches are not monitored
during this process. The rotary axis can thus rotate endlessly.
The limit switch monitoring can be activated by the PLC interface.
Machine data
Table 10-14 Rotary axes: Machine data
Number Identifier
general ($MN_ ... )
10210 INT_INCR_PER_DEG
axisspecific ($MA_ ... )
30300 IS_ROT_AX
30310 ROT_IS_MODULO
30320 DISPLAY_IS_MODULO
36100 POS_LIMIT_MINUS
36110 POS_LIMIT_PLUS
134
Name
Computational resolution for angular positions
Axis is rotary axis
Modulo conversion for rotary axis
Actual value display modulo
Minus software limit switch
Plus software limit switch
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
Reference
G2
A3
A3
IBN CNC: NCK, PLC, drive