Siemens SINUMERIK 840D sl Function Manual page 312

M3: Coupled axes
5.5 Generic coupling
Note
The axis/spindle disable, which is set for the following axis/spindle via the NC/PLC interface
signal DB31, ... DBX1.3, can be overwritten by the program test (DB21, ... DBX25.7 or
DB21, ... DBX1.7) and SERUPRO states; this is also the case for every other axis/spindle.
312
5 The effect of NC/PLC interface signal
DB21, ... DBX25.7 (program test selected) or
DB21, ... DBX1.7 (activate program test)
on the following axis/spindle can be set via bit 5:
Bit 5 = 0 DB21, ... DBX25.7 or DB21, ... DBX1.7 has no effect
on the following axis/spindle. The state of the
following axis/spindle with reference to the axis/
spindle disable is derived solely from the state of the
leading axes/spindles.
Bit 5 = 1 If the "program test" state is active for an axis of the
coupling module, then for the following axis/spindle,
its own state is active regarding the axis/spindle
disable. The state of the leading axes/spindles with
reference to the axis/spindle disable is not imposed
on the following axis/spindle.
Note:
When bit 5 is set, the program test state still has an effect on the
following axis/spindle, even if the leading axes/spindles have a
different state.
6 Bit 6 is used to define the enable for the dependent motion
components when the NC/PLC interface signal DB21, ... DBX25.7
(program test selected) or DB21, ... DBX1.7 (activate program
test) has an effect on the following axis/spindle:
Bit 6 = 0 Dependent motion components of the leading axes/
spindles become effective irrespective of the state of
the axis/spindle disable of the relevant leading axis/
spindle.
Bit 6 = 1 Dependent motion components of the leading axes/
spindles only become effective if the state of the axis/
spindle disable of the leading axis/spindle matches
that of the axis/spindle disable of the following axis/
spindle. Otherwise, the components are suppressed.
Note:
Bit 6 is only of significance if bit 5 is set, i.e. if the program test
state has an effect on the following axis/spindle (see bits 3 and 5).
7 Reserved.
8 Reserved.
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions