MAC address
The MAC address is a globally unique device identification and is assigned to each PROFINET
device during production. The PROFINET device can be accessed via the MAC address via LAN.
The MAC address is 6 bytes long and has the following structure:
• 3 bytes for the manufacturer ID
• 3 bytes for the device identifier (consecutive number)
The 3RW5 PROFINET communication modules have 2 or 3 MAC addresses:
• 3RW5 PROFINET Standard communication module: 1 MAC address for the PROFINET
interface, 1 port MAC address
• 3RW5 PROFINET High Feature communication module: 1 MAC address for the PROFINET
interface, 2 Port MAC addresses
The MAC address for the PROFINET interface X1 is legibly lasered onto the front of the device,
e.g.: 08-00-06-6B-80-C0. In an automation system, this MAC address for the
3RW5 communication module is displayed in STEP 7 (TIA Portal) under "Accessible devices".
The port MAC addresses (Port X1 P1 and Port X1 P2) are required for LLDP, for example.
Media redundancy
The 3RW5 PROFINET High Feature communication module supports media redundancy
according to the Media Redundancy Protocol (MRP). This function is configured using the
engineering tool of the automation system, e.g. with STEP 7 HW Config.
With the Media Redundancy Protocol (MRP) you can implement redundant PROFINET
communication via a ring topology without additional Ethernet switches.
Messages
Data that is transferred from the 3RW5 soft starter and indicates the current operating state.
MRPD (Media Redundancy with Planned Duplication)
If one device or line in the ring fails, all other devices continue to be supplied with IO data
without interruption. MRPD is based on IRT and MRP. In order to have as few interruptions as
possible in the event of a failure, the PROFINET devices participating in the ring send their data
in both directions. Since the devices receive this data at both ring ports, the ring reconfiguration
time is eliminated.
NTP (time synchronization)
The Network Time Protocol (NTP) is a standard for synchronizing clocks in computer systems
over packet-based communication networks. NTP was specially developed to provide reliable
time data on networks with a variable package runtime.
Glossary
SIRIUS 3RW5 PROFINET communication modules
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