Siemens SINAMICS

● r8950[0...239] CBE2x Name of Station actual
● r8951[0...3] CBE2x IP address actual
● r8952[0...3] CBE2x Default Gateway actual
● r8953[0...3] CBE2x Subnet Mask actual
● r8954 CBE2x DHCP Mode actual
● r8955[0...5] CBE2x MAC address
● r8959 CBE2x DAP ID
● r61000[0...239] PROFINET name of station
● r61001[0...3] PROFINET IP of station
A.1.3.2 RT classes for PROFINET IO
PROFINET IO is a scalable realtime communication system based on Ethernet technology.
The scalable approach is expressed with three realtime classes.
RT
RT communication is based on standard Ethernet. The data is transferred via prioritized
Ethernet telegrams. Because standard Ethernet does not support any synchronization
mechanisms, isochronous operation is not possible with PROFINET IO with RT!
The real update cycle in which cyclic data is exchanged depends on the bus load, the devices
used and the quantity framework of the I/O data. The update cycle is a multiple of the send
cycle.
IRT
Two options are available with this RT class:
● IRT "high flexibility"
● IRT "high performance"
The real-time 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".
Software preconditions for configuring IRT:
● STEP 7 5.4 SP4 (HW Config)
Note
For further information about configuring the PROFINET interface for the I/O controller and I/
O device, please refer to the following document: SIMOTION SCOUT Communication System
Manual.
Communication
A.1 Communication
Industrial Security
Configuration Manual, 08/2017, A5E36912609A 147