Extension Of The Sag Compensation With Ncu Link - Siemens SINUMERIK 840D sl Function Manual

$MN_MM_CEC_MAX_POINTS[1]=5
$MN_MM_CEC_MAX_POINTS[2]=5
$MN_MM_CEC_MAX_POINTS[3]=5
$MN_MM_CEC_MAX_POINTS[4]=4
$MN_MM_CEC_MAX_POINTS[5]=4
$MN_MM_CEC_MAX_POINTS[6]=4
$MN_MM_CEC_MAX_POINTS[7]=4
$MA_CEC_MAX_SUM[AX3]=10.0
$MA_CEC_MAX_VELO[AX3]=100.0
M17
5.4.4

Extension of the sag compensation with NCU link

Application
If a system is operated with NCU link, any number of axes of the NCU link grouping can be
compensated mutually. The two axes that are coupled via sag compensation must be
interpolated on one NCU.
See also:
● Several Operator Panels on Several NCUs, Distributed Systems (B3); Chapter: NCU-Link
● Several Operator Panels on Several NCUs, Distributed Systems (B3); Chapter: Axis
Function
The parameterization of the sag compensation function is done by setting system variables
of the form: $AN_CEC ...
These system variables are normally set via a part program that processes the NCK in a
certain channel. The channel axis identifier can be used in the variables
$AN_CEC_OUTPUT_AXIS or $AN_CEC_INPUT_AXIS. This way, each axis of the channel
can be addressed, even if it is in a different NCU.
A program in Channel 2 can couple Axis ZZ with Axis XX via the following setting (the setting
is valid for the table with the number 0):
$AN_CEC_INPUT_AXIS[0] = (XX)
$AN_CEC_OUTPUT_AXIS[0] = (ZZ)
This way AX3 on NCU-1 is "coupled" with AX2 on NCU-2 (see configuration 1).
The following variants can be used to parameterize if the axes to be coupled are on different
channels:
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Container
; Define the maximum
; total compensation value
; Limit the maximum changes in the
; total compensation value
Compensations (K3)
5.4 Interpolatory compensation
373