Detailed description
2.1 Mode group
Basic logic functions: Mode group, channel, program operation, reset response (K1)
12 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Mode group assignment
A mode group is a grouping of one or more channels. Axes and/or spindles are assigned to
one channel.
Machine data:
MD10010 $MN_ASSIGN_CHAN_TO_MODE_GROUP
is assigned a channel of a mode group.
If the same mode group is addressed in several channels, these channels together form a
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.
Using the master spindle, they can perform functions such as G96, G961, G331, G332,
etc.
• Channel axes that are not defined as geometry axes can be moved as path axes,
synchronous axes, positioning axes, PLC axes, and command 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
spindle.
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.
Any axis in the channel can be configured 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 or 840D sl, 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
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