Block Architecture - Siemens SCALANCE XR-300M Compact Operating Instructions

Table 7-12
Cable type
IE FC Standard Cable, 4 × 2, 24
AWG
IE FC Flexible Cable, 4 × 2, 24
AWG
IE FC Standard Cable, 4 × 2, 22
AWG
IE FC Flexible Cable, 4 × 2, 22
AWG
Note
Permitted cable lengths (fiber-optic cable - Fast Ethernet or gigabit)
The values correspond to those of the permitted MM900 media modules and SFP transceivers.
7.4

Block architecture

Block architecture with SCALANCE XR‑300 devices
The XR324-12M and XR324-4M handle the Ethernet frame traffic of the 24 ports with the aid
of three switch blocks.
● The three switch blocks are connected in series (block 1 via block 2 to block 3)
● Gigabit wire speed is possible within a block (max. 8 ports per block).
● Between the blocks there is a bandwidth of 1 gigabit/s available,that must be shared by all
ports for frame traffic between the blocks.
When operating solely with Fast Ethernet (100 Mbps), the XR devices support full wire speed
via all blocks.
SCALANCE XR-300M
Compact Operating Instructions, 11/2019, A5E02661171-15
Permitted cable lengths (copper cable - gigabit Ethernet)
Accessory (plug, outlet, TP cord) Permitted cable length
with IE FC RJ-45 Plug 180,
4 × 2
with IE FC Outlet RJ-45
+ 10 m TP cord
with IE FC Outlet RJ-45
+ 10 m TP cord
Technical specifications
7.4 Block architecture
0 to 90 m
0 to 60 m
+ 10 m TP cord
0 to 90 m
+ 10 m TP cord
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