Fundamentals Of Measuring Input Technology Object - Siemens SIMOTION Function Manual

5.2

Fundamentals of Measuring Input technology object

5.2.1 Measuring input types - local and global measuring inputs
Depending on the hardware platform (measuring input type), local and global measuring inputs
are available for the measuring tasks. Compared to local measuring inputs, global measuring
inputs have a greater range of functions and enable measurements to be made faster. During
the configuration of a Measuring Input TO, you must consider which functions (measurement,
interconnection options) are to the used. Depending on the requirements, you have to
configure a local or a global measuring input.
Local measuring inputs
At a signal edge on the respective input, the actual values of a SIMOTION C230-2, C240,
D4xx, D410-2, D4x5-2 (X122/X132), CX32, CX32-2 or on the drive (for example, SIMODRIVE
611U, MASTERDRIVES MC, SINAMICS) of a connected encoder are acquired with positional
accuracy in order to determine lengths or distances. The device on which the measuring
system is available, is used for the measuring.
The assignment of inputs is not fixed depending on the hardware and is performed in the
SCOUT engineering system during configuration of the Measuring Input TO symbolically or
via the HW address.
Local measuring inputs refer to the respective drive. Configuration usually takes place via drive
parameters.
Global measuring inputs
With a signal edge at the relevant input, the current actual values of one or more encoders are
measured using time stamp functionality with positioning accuracy in order to provide
information for determining lengths or distances (possible with any encoders included in the
project).
Each measurement result is assigned a very precise "internal" time stamp which is then used
to determine the corresponding actual position in SIMOTION.
The assignment of inputs is not fixed depending on the hardware and is performed in the
SCOUT engineering system during configuration of the Measuring Input TO symbolically or
via the HW address.
Global measuring inputs support extended functionalities
● More than one measuring input on one axis/encoder, whereby these can be active
● More than one measuring input is assigned to one measuring input (monitoring measuring
● Cyclic measuring
● Measuring on virtual axes
Output Cams and Measuring Inputs
Function Manual, 04/2014
simultaneously.
input).
With this functionality, one measuring input can have a functional effect on more than one
measuring input and therefore on more than one axis/external encoder.
5.2 Fundamentals of Measuring Input technology object
Measuring Input TO - Part III
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