Siemens SINUMERIK 840Di Function Manual page 538

Detailed Description
2.1 Mode group
Note
The control system does not recognize mode group-specific data. However, it is possible to
make some channelspecific settings that pertain to the mode group.
Channelspecific assignments
Axes can be assigned to multiple channels that, in turn, are allocated to different mode
groups. The axes can then be interchanged between these channels (axis replacement).
Axis replacement functions independently of the mode group.
Machine axes and spindles are assigned to a channel. They differ as follows:
• Geometry axes can be operated in the path grouping.
• Channel axes that are not defined as geometry axes can be moved as path axes,
• Special axes have no geometric relationship with one another.
• Master spindle geometry axes can perform functions using the master spindle.
• Auxiliary spindles are all other spindles/axes in the channel apart from the master
The Geo axis replacement command can be programmed to declare a channel axis as a
geometry axis and define its geometry axis number. Which spindle in the channel will be the
master spindle is defined using SETMS.
With SW 4.4 and higher, it is possible to configure each axis existing in the channel as a
spindle. The number of axes per channel depends on the control version. In order to
optimize the performance utilization, the available channel and axis configurations are limited
depending on the hardware.
With SINUMERIK 840D, the following configurations are permissible depending on the
HW/SW version:
• Up to 12 axes/spindles per channel
• Maximum of 31 axes or 20 spindles per NCU
For more information about other axis configurations such as axis containers, link axes,
reciprocating axes, main run axes, rotary axes, linear axes, master axes, and slave axes and
the various versions, please refer to:
References:
/FB1/ Description of Functions, Basic Machine; Axes, Coordinate Systems, Frames (K2)
/FB1/ Description of Functions, Basic Machine; Spindles (S1)
/BU/ Ordering Information, Catalog NC 60
2-2
Using the master spindle, they can perform functions such as G96, G961, G331, G332,
etc.
synchronous axes, positioning axes, PLC axes, and command axes.
spindle.
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0