Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 575)

L-force | PLC Designer
General Editors
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DMS 4.1 EN 03/2011 TD29 573
Editing within the CAM object properties editor
The basic settings for the CAM object currently selected in the device tree can be
defined in the object properties dialog.
Click here for a detailed description.
13.1.5 Compilation of the CAM
During the compilation structure variables of type MC_CAM_REF are created. They
contain a description of each mapping piece describing the CAM. Data structures of
this type are used as input of the MC_CamIn module. The structure is part of the
library SM3 Basic.library.
13.1.6 Using CAMs - General Hints
The library SM3_Basic.library provides appropriate modules for the handling of CAMs.
The library can be inserted in the project by use of Add library... in the library manager.
Otherwise it will be inserted automatically with adding a SoftMotion drive to the
device tree.
The following paragraphs give deeper insight in the meaning of particular parameters
(periodicity, offset etc.) and the possibility to attach a CAM to another:
• Effects of module parameters
• Switching between CAMs
Effects of module parameters
CAM Properties (Properties dialog of the CAM):
• Periodic transition, Period
A periodic CAM can be processed repeatedly without exhibiting "jumps" at the
transition from one period to its next one. As far as the check box in front of
"Periodic transition" is activated , the slave position associated to the end
position of the master is a multiple of the slave position value associated to the
start position of the master, whereas the value of slave velocity and acceleration
equal their values at the start point. The period or feed rate is measured in units of
the slave scale.
Even if "Periodic transition" is de-activated the related CAM may be processed
consecutively. In this case it's left to the user to make sure that the transitions are
consistent to the desired extent.