Switching Constant Grinding Wheel Peripheral Speed (Gwpson, Gwpsof) On/Off - Siemens SINUMERIK 840D sl Programming Manual

Program code
N30 G0 Z51
N35 SCC[Y]
N40 G1 F1.2 Y25
2.6.4 Switching constant grinding wheel peripheral speed (GWPSON, GWPSOF) on/
off:
With the predefined procedures GWPSON(...) and GWPSOF(...), the constant grinding wheel
peripheral speed (GWPS) for grinding tools (tool type: 400 to 499) is switched on and off.
Syntax
GWPSON(<TNo>)
S<n>=... :
...
GWPSOF(<TNo>)
Meaning
GWPSON(...):
GWPSOF(...):
<TNo>:
S<n>=...:
S0=... or S... :
Query status
The following system variable can be used to query from the part program whether the constant
grinding wheel peripheral speed is active for a specific spindle.
$P_GWPS[<n>] ; where <n> = spindle number
Value
0 (= FALSE)
1 (= TRUE)
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Comment
; Reference axis for G96 is Y,
reduction of spindle speed (Y30).
; Face cutting in Y at 1.2 mm/revolution.
Switch on the constant grinding wheel peripheral speed
Switch off the constant grinding wheel peripheral speed
T number
Note:
Only required if the constant grinding wheel peripheral speed is to be switch‐
ed on or off for an inactive grinding wheel rather than the active grinding
wheel that is currently in use.
Grinding wheel peripheral speed in m/s or ft/s for spindle <n>
Grinding wheel peripheral speed for the master spindle
Meaning
GWPS is inactive.
GWPS is active.
Fundamentals
2.6 Spindle motion
103