Commissioning: Machine Data - Siemens SINUMERIK 840D Function Manual

Channel assignment
A spindle job is processed in that particular channel, which is assigned to the spindle at the
instant of the job.
The channel, which is assigned to the spindle, can be determined using the following NC/PLC
interface signal:
DB31, ... DBX68.0 - 3 (channel assignment of the NC axis/spindle)
Mode change
The definitions made within the context of the spindle jobs are kept beyond any mode change.
Program start
When an NC program starts in the channel, which is assigned to the spindle, then the actual
spindle definitions are kept. Spindle definitions can be changed using NC program commands
or using synchronized actions.
See also
M40: Automatic gear stage selection for speeds outside the configured switching thresholds
(Page 835)
G2: Velocities, setpoint / actual value systems, closed-loop control (Page 31)
18.7.4.2

Commissioning: Machine data

Automatically accepting spindle definitions in setting data
Using the following machine data settings, spindle definitions are transferred from NC
programs, synchronized actions and the spindle control by the PLC (FC18) into the
corresponding setting data:
MD35035 $MA_SPIND_FUNCTION_MASK, bit x = <value>
Bit
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Value Meaning
4 1 A speed setpoint is entered via NC program, synchronized actions or FC18 is
transferred into the following spindle-specific setting data:
SD43200 $SA_SPIND_S[<spindle>]
Note
S values that are not programmed speed values are not transferred. e.g.:
● S value at constant cutting speed (G96, G961)
● S value for rotation-related dwell time (G4)
0 No speed setpoints are transferred into the setting data.
S1: Spindles
18.7 Programming
821