09 47 474 7206 HARTING, 09 47 474 7206 Datasheet - Page 69

• Manufacturer Part Number: 09 47 474 7206
• Description: Ha-Vis Smart Patch Cable CAT.6 Yel. 5m
• Manufacturer: HARTING

Specifications of 09 47 474 7206

• Rohs Compliant: Yes

Fast Track Switching
Several Ethernet-based methods have identified this problem and eliminated it. However such methods require
each network node to implement specialized hardware for communication .
With the development of Fast Track Switching (FTS), HARTING has found a new path. FTS switches solve the
performance and deterministic problems while all other nodes require only the standard Ethernet interfaces .
Fast Track Switching uses three key features to achieve this:
A simple example serves to illustrate the superior performance of this Fast Track Switching:
An automation frame must travel on a path through 16 switches . The transmission time for the Ethernet frames
under standard switching rules is tightly dependent on the network load . Thus the transmission time for the frames
can vary widely according to the network load: a few arrive quite quickly, the majority have an average time, and a
few frames travel quite slowly .
As a reference point, a comparable cycle for one of the Field bus protocols used widely in automation applications
is shown in black . This protocol has state-of-the-art levels of determinism and transfer speeds . Sometimes the
data arrives just as fast at its destination when standard switching is used – but only sometimes .
Fast Track Switching, on the contrary, exhibits excellent results and is deterministic .
1. Preferred frames (such as automation frames) are detected first. The switch can focus on any specific part
2 . These key frames get fast-track forwarding – a cut-through process instead of store-and-forwarding . As a
3 . If the switch port needed for the forwarding is busy at that moment sending a data frame, then the
of the Ethernet header for special properties . For example, PROFINET frames are Ethertype 8892 . This
type is then monitored and evaluated if the application needs to accelerate their transmission .
result, the switch latency time is minimized .
data frame is buffered and the forwarding is aborted so that the automation frame can be forwarded
immediately . Only after the automation frame is sent is a second attempt made to send the data frame .
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