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Siemens SINUMERIK 840D sl Function Manual page 1234

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S1: Spindles
16.4 Configurable gear adaptation
Request gear stage change
A gear stage change can be requested:
● In the part program using:
– M40 S...
– M41 ... M45
– M70
– G331 S...
● In synchronized actions using:
– DO M40 S...
– DO M41... M45
– DO M70
● Through the PLC using the FC18 function block
● In the reset state through description of NC/PLC interface:
DB31, ... DBX16.0-16.2 (actual gear stage A to C)
The mechanically active gear stage can be communicated to the NC especially after a
POWER ON.
Note
If the spindle motor is attached to the spindle directly (1:1) or with a non-variable
transmission ratio (MD35010 = 0), then the M40 and M41 ... M45 auxiliary functions are
not relevant to this spindle.
1234
Automatic gear stage selection to the programmed speed S...
Direct selection of gear stages 1 ... 5
For MD35014 $MA_GEAR_STEP_USED_IN_AXISMODE = 1 ... 5
(see "Configurable gear step in M70 (Page 1263)")
For MD35010 $MA_GEAR_STEP_CHANGE_ENABLE, Bit 5 = 1
Automatic gear stage selection to the programmed speed S...
Direct selection of gear stages 1 ... 5
For MD35014 $MA_GEAR_STEP_USED_IN_AXISMODE = 1 ... 5
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions

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