Siemens SINUMERIK 840D sl Function Manual page 311

Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Bit Meaning
0 Reserved.
1 Reserved.
2 Reserved.
3 The effect of NC/PLC interface signal
DB31, ... DBX1.3 (axis/spindle disable)
on the following axis/spindle can be set via bit 3:
Bit 3 = 0 DB31, ... DBX1.3 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 3 = 1 DB31, ... DBX1.3 has an effect on the following axis/
spindle. The state of the leading axes/spindles with
reference to the axis/spindle disable is not imposed
on the following axis/spindle.
Note:
If bit 3 = 1, the axis/spindle disable state of the following axis/
spindle only has an effect if the program test or SERUPRO states
are not active (see also bit 5).
4 Bit 4 is used to define the enable for the dependent motion
components when the NC/PLC interface signal DB31, ... DBX1.3
(axis/spindle disable) has an effect on the following axis/spindle:
Bit 4 = 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 4 = 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 4 is only of significance if bit 3 is set, i.e. if the NC/PLC interface
signal DB31, ... DBX1.3 (axis/spindle disable) has an effect on the
following axis/spindle (see bits 3 and 5).
M3: Coupled axes
5.5 Generic coupling
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