PROFIBUS networks
1.1 Local area networks in manufacturing and process automation
PROFIBUS Network Manual
System Manual, Edition 04/2009, C79000-G8976-C124-03
13
Industrial Ethernet
Communications network for the LAN and cell area in with baseband transmission
technology according to IEEE 802.3.
Characteristics:
● High transmission performance
– Fast Ethernet (100 Mbps)
– Gigabit Ethernet (1000 Mbps)
● Scalability and practically unlimited network spans with switching technology
● Three transmission technologies are available:
– Electrical cable (twisted pair)
– Fiber-optic cable
– Wireless LAN
● Security modules protect from unauthorized access
● Industrial Ethernet provides expansions specifically for an industrial environment:
– Network components and cabling technology suitable for industry
– High availability due to redundancy functionality (for example ring redundancy) and
redundant power supply
IWLAN
Industrial wireless communication stands for the industrial mobile communication products
for wireless communication.
These are based on global wireless standards such as IEEE 802.11, GSM, GPRS or UMTS.
Industrial Wireless LAN (IWLAN) technology represents an extension to the IEEE 802.11
standard that is particularly suited to demanding industrial applications with real-time and
redundancy requirements.
Characteristics:
● Operation in the frequency bands 2.4 and 5 GHz
● Support of most IEEE 802.11 standards
● High spatial flexibility: Communication independent of hard-wired cabling (for example no
trailing cable is required with overhead monorails)
● Straightforward interfacing with cable Ethernet
● High availability
– Due to device-related and application-related monitoring of the wireless connection
– Due to numerous security technologies (for example RADIUS server, WEP, AES,
TKIP)
● Suitability for industry with Industrial Wireless LAN (IWLAN)
– Data reservation
– "Rapid roaming" for extremely fast handover of mobile nodes between different
wireless cells
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