Siemens sinumerik 840D sl Function Manual page 597

Detailed description
2.1 Speed/torque coupling, master-slave (SW 6 and higher)
2.1.3 Configuring a coupling
Static
A master-slave coupling is configured only in the slave axis.
This must be assigned permanently to one of the channels. Each slave axis is assigned one
master axis for speed setpoint coupling and one for torque compensatory control.
In the default setting, the same master axis is used for torque compensatory control as for
speed setpoint coupling.
The assignments done in the following machine data are automatically active in each control
start-up.
MD37252 $MA_MS_ASSIGN_MASTER_TORQUE_CTR
MD 37250 $MA_MS_ASSIGN_MASTER_SPEED_CMD
Dynamics
The program commands MASLDEF and MASLDEL can be used to change the assignment
from the part program dynamically.. This type of configuration can change the static
configuration but does not have any reverse effect on the associated machine data.
The following instruction is used to assign one or more slave axes to a master axis.
MASLDEF(Slv1, Slv2, ..., master axis)
The following instruction cancels assignment of the slave axes to the master axis and
simultaneously uncouples the current coupling, like MASLOF.
MASLDEL(Slv1, Slv2, ..., )
Figure 2-5
Changing the configuration has no effect in the coupled state. The change is not accepted
until the axes are next uncoupled.
10
Varying configuration of master axis
Special functions: Speed/Torque Coupling, Master-Slave (TE3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0