Siemens SINUMERIK 840D sl Function Manual page 1268

S1: Spindles
16.5 Additional adaptations to the spindle functionality that can be configured
MD35035 is bit coded:
Bit
0 ... 2
4
5
8
10
12
19
20
22
Changes to MD35035 become effective after an NC reset.
1268
Meaning
Gear stage change behavior for test feedrate (DryRun), program test and SERUPRO
See "Suppression of the gear stage change for DryRun, program test and SERUPRO
(Page 1265)".
The programmed speed S... including speed setpoints FC18 and synchronized actions can
be accepted in setting data SD43200 $SA_SPIND_S (speed for spindle start via PLC interface).
See "Special spindle motion via the PLC interface (Page 1277)".
For bit 5 = 1, the content of setting data SD43200 $SA_SPIND_S acts as the speed setpoint
for JOG. You can use the JOG keys to operate the spindle at the speed defined in SD43200.
If the content is zero, other JOG speed setpoints are active(see SD41200 $SN_JOG‐
SPIND_SET_VELO).
The programmed cutting velocity S... including setpoints via FC18 and synchronized actions
can be accepted in setting data SD43202 $SA_SPIND_CONSTCUT_S (cutting rate for spindle
start via the PLC interface).
See "Special spindle motion via the PLC interface (Page 1277)".
For the master spindle, the value of the 15th G group (feedrate type) can be accepted in setting
data SD43206 $SA_SPIND_SPEED_TYPE (spindle speed type for spindle start via the PLC
interface).
See "Special spindle motion via the PLC interface (Page 1277)".
Bit 12 = 0 Spindle override is not effective for the zero mark search with M19, SPOS or
SPOSA = 0.
Bit 12 = 1 Spindle override is effective for the zero mark search with M19, SPOS or SPOSA
= 0.
When programming SPOS and SPOSA, auxiliary function M19 can be implicitly generated and
output to the PLC.
See "Positioning mode (Page 1205)".
In the case of M70 functionality which is generated in the control, auxiliary function M70 can
be implicitly generated and output to the PLC.
See "Implicit transition to axis mode (Page 1224)".
Bit 22 = 0 The NC/PLC interface signal DB31, ... DBX17.6 (invert M3/M4) also affects the
function "interpolatory tapping (G331/G332)".
Note:
The following must be observed for this setting:
● For part programs with G331 and G332, it is necessary to set NC/PLC
interface signal DB31, ... DBX17.6 (invert M3/M4) before part program start
to a stable value.
● Existing application-based solutions, e.g. as are used in tapping cycles,
must, if required, be adapted. It is known, for example, in tapping cycles, that
the spindle direction of rotation can be inverted using MIRROR depending
on a cyclic-specific setting data.
Bit 22 = 1 The NC/PLC interface signal DB31, ... DBX17.6 (invert M3/M4) does not affect
the function "interpolatory tapping (G331/G332)".
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions