Siemens SIMATIC NET Operating Instructions Manual page 21

Use case 1: A SCALANCE XC100-4OBR is installed between three IE switches
Normal operation
In normal operation, the network interfaces of the bypass relay (P1 and P2) are connected to
the corresponding end device interfaces (P1` and P2`).
Network component 1 and the end device and the end device and network component 2 are
connected via the bypass relay.
If a network component is connected to an end device via a bypass relay with TAP function
in normal operation, the attenuation depends on the direction. The attenuation in the send
and receive direction is different.
On connections via a bypass relay without TAP function, the attenuation in the send and
receive direction is the same.
Variant
SCALANCE
XC100-4OBR
(single mode)
SCALANCE
XC100-4OBR
(multimode)
SCALANCE XC100-4OBR
Operating Instructions, 10/2013, C79000-G8976-C297-02
TAP function Connection
Without TAP Network component 1 → end device
function End device → network component 1
With TAP function Network component 1 → end device
End device → network component 1
With TAP function Network component 1 → end device
End device → network component 1
Description of the device
3.5 Installation guide
Attenuation
at 0 °C to 60 °C
1.0 dB
5.5 dB
1.0 dB
5.8 dB
1.3 dB
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