SIEMENS
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Siemens IK PI · 2015
PROFINET/Industrial Ethernet
Industrial Ethernet Switches
SCALANCE X-300 managed
2
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Design
The SCALANCE X-300 Industrial Ethernet switches with rugged
metal housing are optimized for mounting on a standard DIN rail
and the S7-300 rail. Direct wall mounting in various positions is
also possible. Thanks to the S7-300 housing dimensions, the
devices are suitable for integration into an automation solution
with S7-300 components.
The switches have:
•
a 4-pin terminal block for connecting the redundant power
supply (2 x 24 V DC)
•
Row of LEDs for indicating the status information
(power, link status, data traffic, fault, redundancy manager,
standby manager)
•
A 2-pin terminal block for connecting the isolated signaling
contact
•
SELECT/SET key for on-site configuration of the signaling
contact
•
Slot for optional C-PLUG swap medium on the rear of the
device for easy replacement in the event of a fault
The SCALANCE X-300 switches are available with the following
port types:
•
10/100BaseTX, RJ45 connection;
RJ45 socket, automatic detection of the data rate
(10 or 100 Mbit/s), with Autosensing and Autocrossover
function for the connection of IE FC cables via
IE FC RJ45 Plug 180 to 100 m.
•
10/100/1000BaseTX, RJ45 connection;
RJ45 socket, automatic detection of the data rate
(10 or 100 or 1 000 Mbit/s), with Autosensing and
Autocrossover function for the connection of
- IE FC cables 2x2 for 100 Mbit/s via IE FC RJ45 Plug 180
up to 100 m
- IE FC cables 4x2 for 1 000 Mbit/s via TP Cord and IE FC
RJ45 Modular Outlet up to 100 m
- IE FC cables 4x2 for 1 000 Mbit/s via IE FC RJ45 Plug 4x2
up to 100 m
•
1000BaseSX, SC connections;
SC ports for direct connection to the Industrial Ethernet glass
fiber-optic cable up to 750 m (multimode)
•
1000BaseSX, SC connections;
SC ports for direct connection to the Industrial Ethernet
glass fiber-optic cable up to 10 km (singlemode)
•
1000BaseLX, SC connections;
SC ports for direct connection to the Industrial Ethernet
glass fiber-optic cable up to 40 km (singlemode)
•
1000BaseLX, SC connections;
SC ports for direct connection to the Industrial Ethernet
glass fiber-optic cable up to 70 km (singlemode)
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Function
•
Increase of the network performance;
by filtering the data traffic on the basis of the Ethernet (MAC)
address of the data terminals, data traffic remains local;
only data intended for users of another subnetwork is
forwarded by the switch.
•
Simple network configuration and network expansion;
the switch saves the data received at the ports and forwards
it automatically to the destination address. Collision detection
(CSMA/CD method) does not restrict the expansion of the
network beyond the port.
•
Limitation of the error propagation to the affected subnetwork;
the SCALANCE X-300 switches only forward data with a valid
checksum (CRC).
•
Integration of existing subnetworks with 10 Mbit/s into
Fast Ethernet networks with 100 Mbit/s;
at the twisted-pair ports, the SCALANCE X-300 switch
automatically recognizes the conductor pairs for transmission
and reception (Autocrossover), the data transfer rate of 10 or
100 or 1 000 Mbit/s, as well as full-duplex and half-duplex
mode (Autonegotiation).
•
High-performance connection of SCALANCE X-300 switches
with 1 Gbit/s;
SCALANCE X-300 switches have Gigabit Ethernet ports
for connecting the switches to each other or with other
Gigabit-Ethernet-enabled components
(e.g. SCALANCE X-400, X-500)
•
Integrated redundancy manager for constructing Fast
Ethernet and Gigabit Ethernet ring topologies with high-speed
media redundancy.
•
High-speed standby redundancy;
several network segments such as rings can be intercon-
nected redundantly with SCALANCE X-300 by means of the
integrated standby function. Two X-300 switches are
configured in a ring as a master and slave and are connected
via two links to the other ring. The redundant connection can
be made at 1 000 Mbit/s.
•
Redundant interfacing to higher-level networks;
SCALANCE X-300 switches support the standardized redun-
dancy procedures Spanning Tree Protocol (STP) and Rapid
Spanning Tree Protocol (RSTP). This enables a subnetwork to
be connected redundantly to a higher-level network with
reduced requirements for the reconfiguration time (in the order
of seconds). By supporting the Multiple Spanning Tree
Protocol (MSTP), a network can also be split into multiple
sub-segments.
•
Support of virtual networks (VLAN);
for structuring Industrial Ethernet networks with a fast growing
number of users, a physically existing network can be divided
into several virtual networks.
•
Load limiting when multicast protocols (e.g. video trans-
mission) are used;
through learning the multicast sources and targets (IGMP
Snooping, IGMP Querier), SCALANCE X-300 switches can
also filter multicast data traffic and therefore limit the load in
the network.
•
Configuration of the ports for terminals that support authenti-
cation in accordance with IEEE 802.1x. Authentication is by
means of a RADIUS server that must be configured appropri-
ately and must be accessible via the network.
•
Support of the DHCP Option 82, 66, 67
(Dynamic Host Configuration Protocol);
this facilitates the IP address assignment of a terminal
depending on the connected switch port. The IP address is
assigned via a DHCP Server, which has to be configured
accordingly and must be able to be reached via the network.
© Siemens AG 2014