Number Of Excitation Patterns; 2.5.3 Machine Data For The Plant; Axis Type (Linear Or Rotary Axis) - Siemens SIMATIC S5 Manual
Positioning module
1p 247
for stepper motors
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Also See for SIMATIC S5:
- Manual (396 pages) ,
- Equipment manual (197 pages) ,
- Operating instructions manual (43 pages)
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2.5.2.2
The phases of a stepper motor must be excited in a sequence which the rotor can follow step-by-
step.
The number of possible phase excitations is calculated as follows for the full step mode:
number of excitation patterns = 2 x number of phases
For the half step mode this number must be doubled,
2.5.3 Machine Data for the Plant
2.5.3.1
All three axes of a module can be assigned parameters as linear axes or as rotary axes inde-
pendently, From version A02.O onwards, the software package C0M247 supports rotary axes.
The assignment of the following parameters depends on whether you selected a linear axis or a
rotary axis as the ""axistype"
the software limit switches or range limits and
the resolution.
Operator input also depends on the type of axis
with incremental approach,
with zero or tool length offsets and
in the automatic mode,
These differences are explained in detail in the appropriate section, Some fundamental aspects
are, however, discussed below.
Number of Excitation Patterns
Axis Type (Linear or Rotary Axis)
Machine Data and their Structure
2-11
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