2891851 Phoenix Contact, 2891851 Datasheet - Page 11
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2891851
Manufacturer Part Number
2891851
Description
SWITCH ETHERNET 4/RJ45-SC F/OPT
Manufacturer
Phoenix Contact
Type
Ethernetr
Specifications of 2891851
Features
4 Ports
Product
Switches
Usoc Codes
RJ45
Number Of Ports
4
Gender
Female
Shielding
Shielded
Current Rating
140 mA
Voltage Rating
24 V
Housing Material
Aluminum
Contact Material
Copper Alloy
Contact Type
RJ45
Number Of Rows
1
Operating Temperature Range
0 C to + 60 C
Brand/series
SFN Series
Phoenix Part Number
FL SWITCH SFN 4TX/FX
Primary Type
Switch
Protocol Type
Ethernet
Special Features
Auto Detection, Auto Crossing
Transmission Speed
10/100 MBit/s
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
7
–
–
–
2732_en_A
Store and Forward
All data telegrams received by the switch are saved and
their validity checked. Invalid or faulty data packets
(> 1522 bytes or CRC errors) and fragments
(< 64 bytes) are rejected. Valid data telegrams are
forwarded by the switch. The switch always forwards
the data using the data transmission speed that is used
in the destination network segment.
Multi-Address Function
The switch independently learns the addresses for
termination devices, which are connected via a port, by
evaluating the source addresses in the data telegrams.
Only packets with unknown addresses, with a source
address of this port or with a multicast/broadcast
address in the destination address field are forwarded
via the corresponding port. The switch can store
addresses in its address table with an aging time of
5 minutes. This is important when more than one
termination device is connected to one or more ports. In
this way, several independent subnetworks can be
connected to one switch.
Quality of Service (QoS): IEEE 802.1P/Q
The FL SWITCH SFN… switches are capable of
reading Ethernet packets that have already been
assigned a priority level by a managed switch. In cases
of heavy traffic, packets with a priority level between 4
and 7 are considered high priority and processed
before packets with a priority level between 0 and 3.
After prioritization the packets are forwarded without
modification.
Switching Characteristics
A restart deletes the entire address table.
8
Figure 10
X2
X4
X1
X3
LNK/ACT
30 mm
FL SWITCH SFN 5TX
Ord.-No.: 2891152
100
Dimensions
X5
Housing dimensions
120 mm
14 mm
X3
X5
X7
X1
PHOENIX CONTACT
FL SWITCH SFN…
50 mm
FL SWITCH SFN 8TX
Ord.-No.: 2891929
X4
X6
X8
X2
11