Siemens SINUMERIK Series Function Manual page 262
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K3: Compensations
4.4 Interpolatory compensation
4. Execute the part program with compensation values in the control.
Note
Each time before reading-in the compensation tables, the following parameters should
always be set to 0 and then to activate, always be set to 1:
MD32710 $MA_CEC_ENABLE[<AXi>] (enable sag compensation) = 0 → 1
SD41300 $SN_CEC_TABLE _ENABLE[<t>] (enable the compensation table) = 0 → 1
The backlash should always be set to 0:
MD32450 $MA_BACKLASH [<e>] (backlash) = 0
with: <e> = Position measuring system
The use of the program template "BI_SSFK_TAB_AX1_X.MPF" (see Section "Example
(Page 264)") automates these tasks. When manually entering machine data, the
generally applicable "Activate MD" or "Reset" should be observed.
5. POWER ON (warm restart).
6. Now, comparative measurements can be made using the laser interferometer.
7. To further improve the compensation results, it is also conceivable to correct individual
Note
Sequence for SINUMERIK 828D
For SINUMERIK 828D, steps 2 and 3 are eliminated. This is because when the "sag
compensation, multi-dimensional" option is enabled, 8 tables each with 200 interpolation
points per table for the compensation immediately become available. This cannot be
extended!
Note
As described in step 5, the compensation table is downloaded into the program memory as
an executable program and is then transferred into the previously configured memory area of
the control using an NC start. This procedure can be repeated for each table to ensure
transparency. However, it is also possible to download all tables in an initialization step. The
compensation values become active after MD32710[<AXi>] = 1 and a mandatory power
POWER ON.
Note
NC_CEC.INI
The "NC_CEC.INI" file copied via "Commissioning" > "System data" (from the folder "NC
active data" > "sag angularity comp") includes all negotiated sag/angularity and direction-
dependent LEC tables.
262
AUTOMATIC mode > select program > NC start
compensation values in the program. A POWER ON is no longer necessary when
reading-in the table again.
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
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