Parameterization - Siemens SINUMERIK 840D Function Manual

P1: Transverse axes

4.2 Parameterization

Extended functions for data that is always radius-related:
The following applies for PLC axes, via FC18 or axes controlled exclusively from the PLC:
● The dimension for PLC axes in the radius also applies to several transverse axes with
diameter function and is independent of channel-specific or axis-specific diameter
programming.
● In the JOG mode (Inc) a PLC axis is subordinate to the channel status. If diameter
programming is active and MD20624 $MC_HANDWH_CHAN_STOP_COND bit 15 = 0,
only half the path of the specified increment is traversed.
4.2 Parameterization
Defining a geometry axis as a transverse axis
Defining a geometry axis as a transverse axis in the channel is realized using machine data:
MD20100 $MC_DIAMETER_AX_DEF (geometry axis with transverse axis function)
Example
MD20100 $MC_DIAMETER_AX_DEF="X" ; geometry axis X is the transverse axis in the
channel.
For this axis, diameter programming and assigning a constant cutting speed with G96 / G961 /
G962 are both permitted.
Several transverse axes in the channel
Defining additional transverse axes in the channel, for which the functionality of the axis-
specific diameter programming is permitted, is performed using the machine data:
MD30460 BASE_FUNCTION_MASK.Bit 2 = <Value>
Bit
2
Note
The setting MD30460 bit 2 = 1 is only possible for linear axes.
Boundary conditions
In a channel, a transverse axis can be defined as channel-specific (MD20100) and axis-specific
(MD30460, bit 2) axis at the same time. The channel-specific machine data has the higher
priority.
With MD20100, the following channel-specific functions are assigned to the transverse axis
during the run-up
118
Value Meaning
0 Axis-specific diameter programming is not permitted.
1 Axis-specific diameter programming is permitted.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA