Siemens SINUMERIK 840D sl Function Manual page 616

TE3: Speed/torque coupling, master-slave
16.6 Closing/opening a coupling
Program code
N300 $MA_MS_COUPLING_ALWAYS_ACTIVE[AX2] = 1
Note
A statically switched on coupling can neither be switched on/off nor reconfigured using the
master-slave-specific NC/PLC interface signals and/or program commands.
Dynamically switching a coupling on/off
MD37262 $MA_MS_COUPLING_ALWAYS_ACTIVE[<slave axis>] = 0
The coupling can be dynamically switched on and off and reconfigured.
The coupling can be switched on/off by:
● Machine data MD37262
Writing the machine data to switch on ( = 1) or switch off ( = 0) in the part program or
synchronized action. The change becomes active immediately.
● NC/PLC interface
DB31, ... DBX24.7 = 1 or 0 (master-slave on or off)
● Program commands (only 840D sl)
– Switch on: MASLON (<slave axis_1>, <slave axis_2>, ...)
– Switch off: MASLOF (<slave axis_1>, <slave axis_2>, ...)
– Switching off with braking of the slave spindles:
– Switching off and deleting the assignment:
Coupling state
System variable
The actual coupling state of a slave axis can be read in the part program and synchronized
action using the following system variable:
616
MASLOFS (<slave spindle_1>, < slave spindle_2>, ...)
MASLDEL (<slave axis_1>, <slave axis_2>, ...)
Note
Changing the static assignment
The setting:
MD37262 $MA_MS_COUPLING_ALWAYS_ACTIVE[<slave axis>] = 0
Permits the coupling to be dynamically changed. This means that it is possible to define
a new assignment using MASLDEF. The assignment parameterized in the machine data
(see static assignment, Section "Configuring a coupling (Page 607)") takes effect only
after the control has been rebooted (NCK reset).
Comment
; Coupling type: dynamic -> static, switch on cou-
pling.
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions