Siemens SINUMERIK 840D sl Function Manual page 510

TE3: Speed/torque coupling, master-slave
12.3 Configuring a coupling
Boundary conditions
The following boundary conditions must be observed for the dynamic assignment:
• When the coupling is closed, a change to the assignment using MASLDEF has no effect.
The change only becomes effective the next time that the coupling is opened.
• The same master axis is always used for the speed setpoint coupling and torque
equalization control.
• A plausibility check of the assignment is only made when the coupling is closed.
User-specific standard assignment after reset
A user-specific standard assignment, which is always effective after a reset, can be defined in
PROG_EVENT.SPF using the program commands MASLDEF and MASLDEL.
The following machine data should be set in order that PROG_EVENT.SPF is executed for a
reset: MD20108 $MC_PROG_EVENT_MASK.Bit 2 = 1
Example: Dynamic change of the assignment
The assignment of slave axis AX3 is changed from master axis AX1 to master AX2. To do
this, the coupling must be temporarily opened (see Chapter "Activating a coupling [Page
519]").
Programming
①
MASLDEF (AX3, AX1)
②
MASLON (AX3)
③
MASLDEL (AX3)
④
MASLDEF (AX3, AX2)
Figure 12-3
510
Description
Assignment of slave axis AX3 to master axis AX1
Close the coupling
Open the coupling and cancel the assignment between AX3 and AX1
Assignment of slave axis AX3 to master axis AX2
Alternating assignment of the slave axis
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions