Siemens SINUMERIK 840D Function Manual page 538

M3: Coupled axes
14.5 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.
Effect of bits 3/5 and 4/6
The effects of the different motion components on the following axis/spindle as a function of the
associated axis/spindle disable are illustrated in the table below:
A/S disable A/S disable
FA LA
0
0
0
538
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 dif‐
ferent state.
6 Bit 6 is used to define the enable for the dependent motion compo‐
nents when the NC/PLC interface signal DB21, ... DBX25.7 (pro‐
gram test selected) or DB21, ... DBX1.7 (activate program test) has
an effect on the following axis/spindle:
Bit 6 = 0
Bit 6 = 1
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.
A/S disable
LA
1 2
0 0
0 0
1 1
the axis/spindle disable is not imposed on the following
axis/spindle.
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.
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.
CPMVDI CPMVDI
Bit 3/5 Bit 4/6
0 0
1 0
0 0
Function Manual, 06/2019, A5E47437747B AA
FA Meaning
Total
for FA
FA + Real move‐
Cmd
FA + ment.
DEP1
FA
DEP2
FA + Real move‐
Cmd
FA + ment.
DEP1
FA
DEP2
FA + Simulated
Cmd
FA + movement
DEP1
FA
DEP2
Axes and spindles