Siemens SINUMERIK 840Di Function Manual page 1528

Detailed Description
2.1 Spindle modes
• The dynamic limits of the axis stored in the machine data are applicable in axis operation.
• The axis switches to the current feedforward control mode as designated by the MD and
• When using resolution changes in (analog) drive actuators, the following NC program
Table 2-1
SPOS=...
M5
M70
C=...
Table 2-2
C=...
M71
M3/4/5
or
SPOS=...
2-24
the commands FFWON and FFWOF.
For more information about the servo parameter set, please refer to:
References:
/FB1/ Descriptions of Functions, Basic Machine; Velocities, Setpoint/Actual-Value
Systems, Closed-Loop Control (G2)
steps are required:
Change over to axis mode:
Closed-loop controller enable off (by PLC)
→ Output to PLC
Switch actuator (by PLC on account of M70)
Closed-loop controller enable on (by PLC)
NC travels with axis parameter set
Switch back to spindle mode
→ Output to PLC
Closed-loop controller enable off (by PLC)
Switch actuator (by PLC)
Switched to spindle parameter set (1-5) internally in the NC,
controller enable on (by PLC)
NC travels with spindle parameter set
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Spindles (S1)