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EtherCAT is: -Faster - Synchronization - Industrial Ethernet -Flexible - Easier to configure - Cost effective - Easier to implement - Well proven - Open - Conformance - Safety - Redundancy -Versatile EtherCAT is • faster Bandwidth Usage Comparison: – At 4 Byte user data per node: – • Polling / Timeslicing: ~ 2..5 % From 2 Bit user data per node: • EtherCAT: ~ 80..97 % (Full Duplex, 2 x 100 MBit/s) 100 90 80 70 60 50 40 30 20 10 0 Polling / Timeslicing EtherCAT © EtherCAT Technology Group, 2009 7
EtherCAT is: -Faster - Synchronization - Industrial Ethernet -Flexible - Easier to configure - Cost effective - Easier to implement - Well proven - Open - Conformance - Safety - Redundancy -Versatile Functional Principle: Ethernet „on the • Car 27 fly“ Analogy Fast Train: – “Train” (Ethernet Frame) does not stop – Even when watching “Train” through narrow window one sees the entire “Train” – “Car” (Sub-Telegram) has variable length – One can “extract” or “insert” single “persons” (Bits) or entire “groups” (Bytes) – even multiple groups per train © EtherCAT Technology Group, 2009 8
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