Siemens SIMATIC NET SCALANCE XM-400 Series User Manual

8.4 Switching properties
The switching properties listed below apply to the SCALANCE XM-400.
Switching properties
Aging time Can be con󹪝gured (default value: 40 seconds)
Max. number of learnable ad‐
dresses
16000
Maximum frame size 9194 bytes (con󹪝gurable)
Forwarding of PRP frames
(Parallel Redundancy Proto‐
col)
Yes
Switching technique Store and forward
Latency 25 - 70 microseconds
Recon󹪝guration times for redundancy methods:
Redundancy method Recon󹪝guration time
HRP 300 ms
Standby link 300 ms
MRP 200 ms
Full wire speed switching:
Number of frames per second Frame length
At 100 Mbps At 1000 Mbps
148810 1488095 64 bytes
84459 844595 128 bytes
45290 452899 256 bytes
23496 234962 512 bytes
11973 119732 1024 bytes
9615 96154 1280 bytes
8127 81274 1518 bytes
Note
The number of SCALANCE XM-400 modules connected in a line in󹪞uences the frame delay.
When a frame passes through the switch, this is delayed by the store-and-forward function of
the SCALANCE XM-400 by 25-70 microseconds (at 1000 Mbps).
Technical speci󹪝cations
8.4 Switching properties
SCALANCE XM-400
Operating Instructions, 03/2021, C79000-G8976-C306-10 73

Siemens SIMATIC NET SCALANCE XM-400 Series Specifications

General

Brand	Siemens
Model	SIMATIC NET SCALANCE XM-400 Series
Category	Switch
Language	English