Addresses - Siemens SINAMICS G150 Operating Instructions Manual

Operation
6.9 Communication via PROFINET IO
PROFINET IO with IRT (Isochronous Real Time)
Isochronous Real Time Ethernet: Real time property of PROFINET IO where IRT telegrams
are transmitted deterministically via planned communication paths in a defined sequence to
achieve the best possible synchronism and performance between the IO controller and IO
device (drive unit). This is also known as time-scheduled communication and uses
knowledge about the network structure.
IRT requires special line components that support a planned data transfer.
Minimum cycle times of 500 μs and a jitter accuracy of less than 1 μs can be achieved when
this transmission method is implemented.
Figure 6-44
6.9.2.3

Addresses

MAC address
Each PROFINET device is assigned a worldwide unique device identifier in the factory. This
6-byte long device identifier is the MAC address. The MAC address is divided up as follows:
● 3 bytes manufacturer's ID and
● 3 bytes device identifier (consecutive number).
The MAC address is printed on a label (CBE20) or specified on the type plate (CU320-2 PN),
e.g.: 08-00-06-6B-80-C0.
The Control Unit CU320-2 PN has two onboard interfaces:
● One Ethernet interface
● A PROFINET interface with two ports
The two MAC addresses of the Ethernet and PROFINET interfaces are stamped on the type
plate.
350
Bandwidth distribution/reservation, PROFINET IO
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A