Siemens SCALANCE XR-300WG Series - Page 58

Technical specifications
7.6 Switching properties
SCALANCE XR-300WG
58 Operating Instructions, 05/2017, C79000-G8976-C454-01
Switching properties
QoS priority queues
4
Switching technique
Store and forward
Latency
10 microseconds
Full wire speed switching
Frame length (bytes)
Number of frames per second (at 100 Mbps)
64
148810
128
84459
256
45290
512
23496
1024
11973
1280
9615
1518
8127
Note
The number of SCALANCE XR
-300WG modules connected in a line influences the frame
delay. When a frame passes through IE switches of the SCALANCE XR
-300WG product
line, it is delayed by the store and forward function of the device:
•
with a 64 byte frame length by approx. 10 microseconds (at 100 Mbps)
•
with a 1500 byte frame length by approx. 130 microseconds (at 100 Mbps)
This means the more devices of the SCALANCE XR
-300WG product line that the frame
passes through, the longer the frame delay.