Siemens SINUMERIK 840D sl Function Manual page 447

Requirements
Spindle 1 (master spindle)
Note
Default assignments
● The auxiliary functions M3, M4, M5, M70 and M1=3, M1=4, M1=5, M1=70 of spindle 1
(master spindle) are assigned as standard to the second auxiliary function group.
● All S and S1 values of spindle 1 (master spindle) are assigned to the third auxiliary function
group by default.
● The gear stage last programmed is to be output after block search. The following auxiliary
functions are assigned to the ninth auxiliary function group for this reason:
– M40, M41, M42, M43, M44, M45
– M1=40, M1=41, M1=42, M1=43, M1=44, M1=45
● The auxiliary functions M3, M4, M5, M70 and M1=3, M1=4, M1=5, M1=70 (second auxiliary
function group) and S and S1 values (third auxiliary function group) should possess the
following output behavior:
– Output duration one OB40 cycle (quick acknowledgment)
– Output prior to motion
● The auxiliary functions for gear changeover M40 to M45 and M1=40 to M1=45
(ninth auxiliary function group) should have the following output behavior:
– Output duration one OB1 cycle (normal acknowledgment)
– Output prior to motion
Spindle 2
● Only one M function for directional reversal may be programmed in one block. The direction
of rotation last programmed is to be output after block search. The following auxiliary
functions are assigned to the tenth auxiliary function group for this reason:
– M2=3, M2=4, M2=5, M2=70
● All S2 values are assigned to auxiliary function group 11.
● The auxiliary functions M2=3, M2=4, M2=5, M2=70 (tenth auxiliary function group) and S2
values (auxiliary function group 11) should have the following output behavior:
– Output duration one OB40 cycle (quick acknowledgment)
– Output prior to motion
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
H2: Auxiliary function outputs to PLC
8.17 Examples
447