Technical specifications
8.7 X-300M PoE technical specifications
SCALANCE X-300
Operating Instructions, 02/2012, A5E01113043-12
191
Note
The following applies to IE Switches X-300:
The number of IE 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
IE 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.
8.7 X-300M PoE technical specifications
Note
Validity of the technical specifications
All the technical specifications described in this section that is not assigned to a specific
device variant, version or a media module, apply to all device variants/versions of the
product group.
8.7.1 Construction, installation and environmental conditions
Table 8- 82 Construction
Dimensions (W x H x D) 120 × 125 × 124 mm
Weight 1 150 g
Degree of protection IP20
Table 8- 83 Installation options
Installation options
• DIN rail
1)
• S7-300 standard rail
• Wall
1)
Note: When used in shipbuilding, installation on a 35 mm DIN rail is not permitted. In ships, the 35
mm DIN rail does not provide adequate support.
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