Siemens SINAMICS S120 Series

Communication according to PROFIdrive
3.2 Cyclic communication
Communication
Function Manual, 12/2018, 6SL3097-5BD00-0BP0
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3.2.4 Motion control with PROFIdrive
An isochronous drive coupling can be established between the control and device using the
"Motion control with PROFIdrive" function.
Note
The isochronous drive coupling is defined in the following documentation:
PROFIdrive Profile Drive Technology
PROFIBUS User Organization e.
V.
Haid
-und-Neu-Straße 7, D-76131 Karlsruhe,
Internet: (
http://www.profibus.com)
Properties
● No additional parameters need to be entered in addition to the bus configuration in order
to activate this function, the master and slave must only be preset for this function
(PROFIBUS).
● The controller-side default setting is made via the hardware configuration, e.g. HW Config
with SIMATIC S7. The device-side default setting is made using the parameterization
telegram when the bus ramps up.
● Fixed sampling times are used for all data communication.
● The Global Control (GC) clock information on PROFIBUS is sent before the beginning of
each cycle.
● The cycle length depends on the bus configuration. When the cycle is selected, the bus
configuration tool (e.g. HW Config) supports:
– Large number of drives per device/drive unit → longer cycle
– Large number of devices/ drive units → longer cycle
● A sign-of-life counter is used to monitor user data transfer and clock pulse failures.