Siemens SINUMERIK 840D sl Function Manual page 520

TE3: Speed/torque coupling, master-slave
12.6 Activating a coupling
• Machine data MD37262
Writing the machine data to close ( = 1) or open ( = 0) in the part program or synchronized
action. The change becomes active immediately.
• NC/PLC interface
DB31, ... DBX24.7 = 1 or 0 (master-slave, closed or open)
• Program commands
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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:
$AA_MASL_STAT[<slave axis>]
Value
> 0
NC/PLC interface signal
The actual coupling state of a slave axis can be read using the following axis-specific NC/PLC
interface signal:
DB31, ... DBX96.7 (master/slave coupling active)
Setpoint state
Requests to close/open a master-slave coupling (NC/PLC interface signal and/or program
commands) that consecutively follow one another mutually overwrite one another. The active
setpoint state is obtained from the last request.
See Chapter "Response on activation/deactivation [Page 521]"
520
Close: MASLON (<slave axis_1>, <slave axis_2>, ...)
Open: MASLOF (<slave axis_1>, <slave axis_2>, ...)
Opening with braking of the slave spindles:
MASLOFS (<slave spindle_1>, < slave spindle_2>, ...)
Opening and deleting the assignment:
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. The means that it is possible to
define a new assignment using MASLDEF The assignment parameterized in the
machine data (see static assignment, Chapter: "Configuring a coupling [Page 509]")
only becomes active again after the control has rebooted (NCK reset).
Description
0 1) The coupling of the slave axis is not active.
2) The specific axis is not a slave axis
The coupling is active.
<value> == Machine axis number of the master axis
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions