Siemens D410 User Manual
Commissioning (software)
4.6 Using drive-related I/Os by SIMOTION
D410
102
Commissioning Manual, 08/2008 Edition
Table 4-6
Comparison of local and global measuring inputs on the D410
Local measuring input
Global measuring input
Measurement operation
With a signal edge at the relevant input,
the current actual values of an encoder
connected to a control unit are
measured with positioning accuracy to
determine lengths and distances.
With a signal edge at the relevant input,
the current actual values of one or
more encoders are measured using
timestamp functionality with positioning
accuracy in order to provide information
for determining lengths and distances
(possible with any encoders included in
the project).
Configuration of the Measuring Input
TO in the SIMOTION SCOUT
The assignment of inputs is always
permanent depending on the hardware
of the control unit and is performed
during the configuration of the
Measuring Input TO using the
measuring input number.
The assignment of inputs is not fixed
depending on the hardware and is
performed during the configuration of
the Measuring Input TO using the
hardware address.
Measuring Input technology object
setting Single measurement
(Measurement jobs must be issued
individually for each measurement.
Several interpolation cycle clocks lie
between two measurements.)
Yes
Yes
Measuring Input technology object
setting Cyclical measurement
(The measurement is activated just
once and runs cyclically until
deactivated.)
(yes)
Although the Measuring Input TO can
Although the Measuring Input TO can
be requested to perform a cyclical
measurement, it subdivides such a
measurement into the execution of a
series of single tasks. In such a case,
the minimum separation between two
measurements is several servo cycles.
yes
The minimum separation between two
measurements is three servo cycles
(maximum two edges per
measurement possible).
Use of multiple Measuring Input TOs
on one axis/encoder, whereby these
can be active concurrently.
No
Yes
Listening Measuring Input TO
No
Yes
Measuring on virtual axes
No
Yes
Measuring on axes attached to a
different drive unit
No
Yes
A maximum of three probe inputs can be configured onboard on the D410.