Siemens SINUMERIK 808D Parameter Manual page 320

Machine data
3.4 Axis-specific machine data
(is indicated in the version screen)
38000 MM_ENC_COMP_MAX_POINTS
- Number of intermediate points for interpol. compensation (SRAM) DWORD
-
808d-me42 1
808d-me62 1
808d-te42 1
808d-te62 1
808d-mte40 1
808d-mte60 1
Description:
The number of interpolation points required per measuring system must be defined for
the leadscrew error compensation.
The required number can be calculated as follows using the defined parameters:
MD38000 $MA_MM_ENC_COMP_MAX_POINTS = ----------------------------------
$AA_ENC_COMP_MIN
$AA_ENC_COMP_MAX
$AA_ENC_COMP_STEP
When selecting the number of interpolation points and/or the distances between them,
it is important to take into account the size of the resulting compensation table and
the space required in the buffered NC user memory (SRAM). 8 bytes are required for each
compensation value (interpolation point).
The index [n] has the following coding: [encoder no.]: 0 or 1
Special cases:
After any change in MD38000 $MA_MM_ENC_COMP_MAX_POINTS, the buffered NC user memory is
automatically re-allocated on system power-on.
All data in the buffered NC user memory are then lost (e.g. part programs, tool offsets
etc.). Alarm 6020 "Machine data changed - memory reallocated" is output.
If reallocation of the NC user memory fails because the total memory capacity
available is insufficient, alarm 6000 "Memory allocation made with standard machine
data" is output.
In this case, the NC user memory division is allocated using the default values of the
standard machine data.
References:
/FB/, S7, "Memory Configuration"
/DA/, "Diagnostics Guide"
Related to:
MD32700 $MA_ENC_COMP_ENABLE[n]
References:
/FB/, S7, "Memory Configuration"
320
200 0
200 0
200 0
200 0
200 0
200 0
Initial position (system variable)
End position (system variable)
Distance between interpolation points (system variable)
LEC active
A01, A09, A02
5000
5000
5000
5000
5000
5000
$AA_ENC_COMP_MAX - $AA_ENC_COMP_MIN
$AA_ENC_COMP_STEP
Notice:
K3
PowerOn
ReadOnly S
ReadOnly S
ReadOnly S
ReadOnly S
7/2 M
7/2 M
+ 1
Parameter Manual
List Manual, 01/2017