Technical specifications
8.4 XR-300M technical specifications
SCALANCE X-300
176 Operating Instructions, 05/2016, A5E01113043-20
Table 8- 46 Reconfiguration times for redundancy mechanisms
Standby link 300 ms
Mean time between failure (MTBF)
The values in the following table apply to the basic device without media modules.
Device version (power supply)
2 x 24 VDC > 26 years
1)
These values apply at 40 °C.
In the calculation of the MTBF of a modular switch, the standard parts count applies; in other
words, the reciprocals of all component failure rates are added.
The reciprocal of this total id the MTBF of the entire assembly.
Table 8- 47 Full wire speed switching
Number of frames per second
45290 452899 256 bytes
Note
The following applies to IE
Switches X-300:
Switches X-300 connected in a line influences the frame delay time. When
a frame passes through the switch, this is delayed by the Store&Forward
function of the
Switch X-300 by the following values:
at 64 bytes frame length: Delay of approx. 10 microseconds (at 100 Mbps)
at 1500 bytes frame length: Delay of approx. 130 microseconds
(at 100 Mbps)
This means, the more IE Switches X
-300 a frame runs through, the higher the frame delay.
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