Addresses - Siemens sinamics dcp Operating Instructions Manual

Operation
8.6 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 transferred 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 whereby
knowledge about the network structure is utilized. IRT requires special network components
that support scheduled data transmission.
Minimum cycle times of 500 μs and a jitter accuracy of less than 1 μs can be achieved with
this transmission method.
Image 8-49
8.6.2.2

Addresses

MAC address
Every EtherNet and PROFINET interface 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:
● Three bytes for the manufacturer's ID
● Three bytes for the device identifier (consecutive number)
The MAC address is on a label (CBE20), e.g. 08-00-06-6B-80-C0
IP address
The TCP/IP protocol is a prerequisite for establishing a connection and for parameter
assignment. To allow a PROFINET device to be addressed as a node on Industrial EtherNet,
this device requires a unique IP address in the network. The IP address is made up of 4
decimal numbers with a range of values from 0 through 255. The decimal numbers are
separated by a decimal point. The IP address comprises:
● The address of the node (also called host or network node)
● The address of the (sub) network
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Bandwidth distribution/reservation, PROFINET IO
Operating Instructions, 05/2016, A5E34382853K
SINAMICS DCP