Siemens SINUMERIK 840D sl Programming Manual page 126

Fundamentals
2.7 Feed control
Syntax
ACC[<axis>]=<value>
ACC[SPI(<n>)]=<value>
ACC(S<n>)=<value>
Deactivate:
ACC[...]=100
Syntax
ACC:
<axis>:
SPI(<n>)/S<n>:
<value>:
Note
With a greater acceleration rate, the values permitted by the manufacturer may be exceeded.
Example
Program code
N50 ACC[X]=80
N60 ACC[SPI(1)]=50
Further information
Acceleration override programmed with ACC
The acceleration override programmed with ACC[...] is always taken into consideration for the
output, the same as in system variables $AA_ACC. Readout in the part program and in
synchronized actions takes place at different times in the NC processing run.
126
Acceleration change for the specified path axis or speed change for the
specified spindle.
Channel axis name of path axis
Spindle identifier
SPI(<n>) and S<n> are identical in terms of function.
Spindle number
<n>:
Note:
SPI converts spindle numbers into axis identifiers. The transfer parame‐
ter (<n>) must contain a valid spindle number.
Acceleration change in percent
The value refers to or is combined with the feedrate override set on the
machine control panel.
Range of values: 1 to 200%, integers
Comment
; The axis slide in the X direction should only be trav-
ersed with 80% acceleration.
; Spindle 1 should only accelerate or brake with 50% of
the acceleration capacity.
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming