Operation
7.6 Communication via PROFINET IO
SINAMICS DCP
264 Operating Instructions, 09/2019, A5E34382853K
IRT "high performance"
In addition to the bandwidth reservation, the telegram traffic can be further optimized by
configuring the topology. This enhances the performance during data exchange and the
deterministic behavior. The IRT time interval can thus be further optimized or minimized with
respect to IRT "high flexibility".
In addition to the isochronous data transfer provided by IRT, even the application itself
(position control cycle, IPO cycle) can be isochronous in the devices. This is an essential
requirement for closed-loop axis control and synchronization via the bus. Isochronous data
transfer with cycle times well below one millisecond and with a deviation in the cycle start
(jitter) of less than a microsecond provides sufficient performance reserves for demanding
motion control applications.
The RT classes IRT "high flexibility" and IRT "high performance" can be selected as options
in the synchronization settings configuration area of HW Config. In the description below,
both these classes are simply referred to as "IRT".
In contrast to standard Ethernet and PROFINET IO with RT, the telegrams for PROFINET IO
with IRT are transferred according to a time schedule.
Modules
The following SINAMICS modules support the IRT "high performance":
● S120 CU320 together with the CBE20
● S120 CU320-2 DP together with the CBE20
● S120 CU320-2 PN
● S120 CU310 PN
● S120 CU310-2 PN
● S110 CU305 PN
● CUD in conjunction with the CBE20
Note
SINAMICS DCP does not support isochronous operation. Also for cyclic communication via
PROFINET IRT the closed
-loop control is independent of the PROFINET clock cycle.
To Next Page
Loading...
