SIEMENS
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Siemens PM 21 · 2017
SIMOTION Motion Control System
SIMOTION engineering software
SIMOTION SCOUT
> Creation of technology objects
2
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Overview
All SIMOTION controllers feature basic functions which are
predefined by the SIMOTION Kernel. The scope of the language
is compatible with the IEC 61131-3 standard and contains all of
the necessary PLC commands for I/O management, process or
machine control.
Additional functions such as positioning, synchronous
operation, cams and temperature channels are available with
loadable technology packages.
These technology packages permit the generation of
technology objects which provide you with a very simple and
uniform view of the functions of the technology packages.
There are many technology objects, but all are generated,
configured and parameterized in the same way.
In addition, the technology objects have programming
interfaces through which you can use the functionality from
application programs.
Working with technology objects
A brief description of the individual engineering steps will be
given using the example of the technology object "Axis".
Generating
A new axis object is generated by double-clicking the "Insert
New Axis" tab.
Configuration
A wizard helps to specify object properties such as:
•
Name of the axis
•
Functional quality
(e.g. positioning axis or synchronous axis)
•
Connection to the drive
(e.g. SINAMICS S120 over PROFIBUS IO or PROFINET DP or
an analog drive on SIMOTION C240)
After the axis has been generated or configured, it is displayed
in the project tree under its name along with additional tabs for
parameterizing the axis and an option for generating other
technological objects associated with the axis (e.g. cam paths,
measuring inputs).
Parameter assignment
By double-clicking the "Referencing" tab, for example, all
parameters for referencing can be set.
The "axis" object generated in this way also has a specified
number of system variables which can be shown in a structured
display in the detailed view when the axis is selected in the
project tree.
The system variables are mainly used to visualize axis states
such as:
•
Display of the following error
•
Target position to be reached
•
Motion status
(axis is accelerating, braking, motionless, etc.)
These system variables can also be used for:
•
Online diagnostics
•
Display on HMI
•
Logging using the SIMOTION trace function
•
Application programming through querying/comparing these
system variables
Application programs access the axis functionality with system
functions (selected from the command library), which are part of
the "axis" object when it is generated.
The command _pos (axis:=Axis_X, position:=100,
velocity:=123) would cause axis "Axis_X" to move to Position 100
at Velocity 123 (example of system function in Structured Text).
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Benefits
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Easy generation of the technology object for determining the
quantity structure
- Axes
- Cams and cam tracks
- Measuring inputs
- Cam disks, etc.
•
Menu-guided parameterization, graphically supported for
easy understanding
•
Easy visualization and access to functions through system
variables and system functions of the technology objects
•
User-friendly diagnostic information for function optimization
of the technology objects
•
Meaningful alarms in the form of numbers and plain text in the
event of errors
© Siemens AG 2017