January 2012 6.14 Synchronized Axes (Option 24) 767
With MP_scalingFactor you can influence the target position of the slave
axis depending on the master position. Enter any positive or negative value
(on modulo axes only ±1 is possible) in MP_scalingFactor in order to
specify the position of the slave axis according to the following equation:
The PLC can overwrite the factor when commanded. With a closed coupling
this parameter can no longer be changed.
If a coupling is closed while the master is moving, the slave axis is first
accelerated to the velocity of the master at the slave axis’s maximum
possible acceleration from MP_maxAcceleration. This is conducted by
means of a linear, filtered ramp. In MP_accFilterTime enter the time
constant of the triangle filter used that helps to smooth the velocity values.
Useful input values range from 30 ms to 100 ms.
SlavePos = MasterPos * scalingFactor - posOffset
The above equation always applies with respect to the reference system of
both axes. Programmable shifts (e.g. preset) are not taken into account.
However, the coupling is also influenced by shifting the reference point.
Several parameter sets can be used to define various couplings for a slave.
When a coupling is closed, the data of the currently active parameter set
are copied and kept for the duration of the coupling. When a parameter set
is switched, it does not go into effect until the coupling is opened and
closed again.
To Next Page
Loading...
