Examples; Parameter Set Changeover - Siemens SINUMERIK 840D sl Function Manual

A2: Various NC/PLC interface signals and functions

2.4 Examples

The number of drive data sets for the individual motor data sets is therefore:
Switchover instant: Drive parameter set
In principle it is possible to switch over drive parameter sets at any point in time. While an axis
is traversing, especially when switching over speed controller parameters and the motor speed
scaling, torque jumps/steps can occur. We therefore recommend that a drive parameter set is
only switched over for stationary states, especially when the axis is at a standstill.
See also
Overview of the interfaces (Page 68)
2.4 Examples
2.4.1

Parameter set changeover

Parameter set changeover
A parameter set changeover is performed to change the position control gain (K
K = 4.0 to K
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Preconditions
The parameter set changeover must be enabled by the machine data:
MD35590 $MA_PARAMSET_CHANGE_ENABLE [AX1] = 1 or 2 (parameter set change
possible)
The 1st parameter set for machine axis X1 is set, in accordance with machine data with index
"0" NC/PLC interface:
DB31, ... DBX9.0 - DBX9.2 = 0 (controller parameter set)
Parameter-set-dependent machine data
Parameter-set-dependent machine data are set as follows:
Machine data
MD32200 $MA_POSCTRL_GAIN [0, AX1] = 4.0
MD32200 $MA_POSCTRL_GAIN [1, AX1] = 2.0
70
Motor data set (MDS)
MDS[ 0 ] ... MDS[ 2 ]
MDS[ 3 ]
= 0.5 for machine axis X1.
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Number of drive data sets (DDS) per motor data set (MDS)
Comment
K setting for parameter set 1
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K setting for parameter set 2
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Function Manual, 01/2015, 6FC5397-0BP40-5BA2
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Basic Functions