Transmission Of Master Axis Position - Baumuller b maXX BM3000 Operating Manual

Description of the Software Modules and Parameters
Figure 218:

4.8.13.1 Transmission of master axis position

The current position of the master axis is specified by the parameters
Z122.4–. Thereby the parameter
and the parameter
In the following the mode is referred to as a "virtual" master axis.
The revolution information oft he master axis is ignored by setting bit 4 in the parameter
Z122.2–. Now, only the angular specification of the master axis is important. If the syn-
chronization to the polynomial curve was selected after starting
the position in the curve is synchronized, which is within the first master axis revolution.
It is possible to reduce the polynomial calculation cycle with regard to the fieldbus cycle.
This is applied by the parameter
well as the described limitations must be taken into consideration in Z131.20–.
If the division ratio was set greater than 1 the master axis position is automatically inter-
polated linearly with the last master axis position. A delay of the master axis position of a
Z131.18–
responding to the value of the division ratio.
Due to the linear interpolation of the master axis the option is recommended at constant
master axis speed applications, only!
In all the other cases shorter fieldbus cycle times and the use of cubic interpolation of the
drive position
By bit 10 of the
At a set value fail the master axis position is extrapolated with the last master axis speed.
Polynominal curve
Master
position
calculation
Polynominal curve
segment
Structure of operation mode
Z122.4–
fieldbus cycle occurs. The drive position is then calculated more frequently cor-
(Z111.6– interpolation mode = 4) are to be preferred.
Z122.2–
mode a linear extrapolation of the master axis can be activated.
Options
Gear
factor
Z122.3–
indicates the revolutions of the master axis
the angle. Both parameters can be written cyclical by a PLC.
Z131.20–
division ration fieldbus task. The examples as
Parameter manual b maXX BM3000
Document no.: 5.12001.07
Additional motion
5000_0315_rev01_int.cdr
Z122.3–
(Z122.2– bit 0), always
4
and
671
of 820