Technical data

Appendix
CPU 317T: Technology Functions
A5E00251798-03
A-23
Note:
The following error can not reach zero with dimensioning without overshoot in the
constant travel phase.
The balancing filter which is configured based on the velocity controller time
constant can only be set correctly for time constants greater than the position
controller cycle.
The following substitution strategy for displaying the drive model applies to high-
speed drives:
• Substitution velocity controller > position controller cycle/2
The balancing filter is represented by the dead-time element of a position
controller cycle.
• Substitution velocity controller position controller cycle/2
Velocity controller timebase = 0; the balancing filter has no effect. A feed-
forward strategy with no balancing filter is implemented.
A.3.2.2 Assigning interpolator cycle 2
Axes and external encoders are always processed within the interpolator cycle.
Lower-priority axes and external encoders can also be assigned interpolator
cycle 2. Operation of all interconnected technology objects must be based on the
same cycle.
Note
The interpolator cycle may not be assigned online!
"Save and compile all" the technology and download the system data to the
technology CPU in the SIMATIC Manager.
1. In the S7T Config Navigator, select the corresponding axis or external encoder
2. Select Expert > Experts list from the shortcut menu
3. In the Execution.executionlevel configuration data, you can select interpolator
cycle 2 ("IPO_2").