Siemens SINUMERIK 840D sl Function Manual page 1280

S1: Spindles
16.7 Programming
The following conditions apply when writing:
Programming through:
Speed programming
Direct programming in the part
program
HMI
Gear stage change and effect on speed
In the current version, no gear stage change is triggered if the setpoint speed is out of the
speed range of the gear stage (exceptions, see "M40: Automatic gear stage selection for
speeds outside the configured switching thresholds (Page 1293)"). The usual speed limitations
and the speed increase to the setpoint speed are active.
Setpoint speed for JOG
For the following MD configuration:
MD35035 $MA_SPIND_FUNCTION_MASK bit 5 = 1
the content from SD43200 $SA_SPIND_S is active as setpoint speed 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 definitions are active
(see SD41200 $SN_JOGSPIND_SET_VELO).
Constant cutting speed setting
Defaults for constant cutting speed from part program, FC18 or synchronized actions are
written to the following setting data from all the usual sources:
SD43202 $SA_SPIND_CONSTCUT_S (cutting speed for spindle start via PLC interface)
Requirements
The requirement for the definition of a constant cutting speed to be active is:
● The spindle involved must be the master spindle in the channel that handles the spindle.
This condition is fulfilled if the following NC/PLC interface signal is set:
DB31, ... DBX84.0 = 1 (constant cutting speed is active)
Writing from the part program
When writing from the part program, the value for the constant cutting speed is interpreted as
follows:
● If G710 is active in the 12th G group:
● If G700 is set in the 12th G group:
1280
Conditions:
● MD35035 $MA_SPIND_FUNCTION_MASK Bit 4 = 1 must be set.
● Constant cutting speed G96, G961 must not be active.
● The following NC/PLC interface signal must be set:
DB31, ... DBX 84.0 = 0 (constant cutting speed is active)
A programmed S-value and the value of the directly written SD can
be outdated with respect to time. If this is the case, after programming
the SD, the statement STOPRE should be executed.
Only positive values including zero can be accepted. Otherwise, a
corresponding message is generated.
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Metric
Inch as [feet/min]
Basic Functions