SIEMENS
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Siemens IK PI · 2015
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Function
(continued)
PROFINET/Industrial Ethernet
Industrial Ethernet Switches
SCALANCE X-300 managed
•
Support from the Access Control List (ACL);
if this function is activated for one port, the switch forwards the
message frames received to this port if its source address is
present in the address table. All connected nodes can be
automatically entered in the ACL.
• Syslog;
Syslog compliant with RFC 3164 is used in the IP network for
transmitting short, unencrypted text messages via UDP. This
requires the use of a Syslog server that must be configured
appropriately and must be accessible via the network.
•
Time synchronization;
diagnostic messages (log table entries, e-mails) are time-
stamped. The local time is standardized throughout the
network by means of synchronization with a SICLOCK time
transmitter, SNTP or NTP server or via IEEE1588, thereby
simplifying the assignment of diagnostic messages of several
devices.
•
Fast replacement of devices in event of failure, by means of
the C-PLUG switching medium
Network topology and network configuration
The SCALANCE X-300 Industrial Ethernet switches with degree
of protection IP30 are typically accommodated in a control
cabinet along with the nodes to be connected. Electrical and
optical versions can be installed together in star, line and ring
topologies.
The following network structures and combinations of structures
can be implemented:
•
Fast Ethernet and Gigabit Ethernet rings with fast media
redundancy;
to increase network availability, as many as 50 X-200, X-300,
X-400 or X-500 switches can be cascaded in line can be
connected into a ring
•
Several rings can be redundantly linked through the standby
function
•
At the same time, SCALANCE X-300 supports redundant
connection of the ring structure to the corporate network with
Rapid Spanning Tree.
•
Star topology with SCALANCE X-300 switches:
The SCALANCE X-300 switch represents a star point which
can interconnect several nodes or subnets electrically or
optically.
When configuring the network, it is necessary to observe the
following boundary conditions:
•
Maximum line length between two modules for multi-mode
fiber-optic conductors:
- 750 m at 1 Gbit/s
- 5 km at 100 Mbit/s
•
Maximum line length between two modules for single-mode
fiber-optic conductors:
- 10 to 70 km at 1 Gbit/s
- 26 km at 100 Mbit/s
•
Maximum cable length of the TP cable between two
SCALANCE X switches:
- Max. 100 m with IE FC cable 2x2 and IE FC RJ45 Plug 180
-
Max. 100
m at 1
Gbit/s with IE FC standard cable 4x2 (90
m),
IE FC RJ45 modular outlet and patch cable (10 m)
- Max. 10 m using patches with TP cord
Commissioning and diagnostics
Setting options on the device itself:
•
Redundancy manager RM;
to establish a ring, a SCALANCE X-300 is switched to RM
mode. The Gigabit ports (electrical or optical) are preferably
used as ring ports.
•
Signal mask;
the signal mask is set to the current status of the
SCALANCE X-300 (setpoint) by pushbutton operation. The
signal mask defines which ports and which power supplies
are to be monitored. The signaling contact only reports an
error when a monitored port or a monitored feeder fails
(deviation of setpoint/actual status).
•
IP address;
the IP address is assigned via DHCP (Dynamic Host Configu-
ration Protocol). If there is no corresponding server in the
network, the IP address can be assigned using an enclosed
software tool.
Diagnostic options on site:
•
The following status information is displayed by LEDs on site:
- Port status
- Port mode (10/100/1 000 Mbit/s, full/half-duplex)
- Status of the two power supplies
- Signaling contact status
- Signal mask (setpoint status)
- RM mode
- Standby mode
•
The status of the signaling contact is routed externally by
means of floating relay contacts. This enables, for example,
the module to be monitored via an input module from a
controller.
•
Monitoring via the Industrial Ethernet network;
the following possibilities are available:
- Remote via standard browser (Web-based management):
Selection of SCALANCE X-300 switches via the network from
a PC with browser
- Remote via SNMP V1, V2c, V3:
Secure integration of SCALANCE X-300 switches via the
network into a network management system, e.g. SINEMA
Server
- Remote via PROFINET IO diagnostics:
PROFINET diagnostic alarms from SCALANCE X-300
switches can be displayed using the relevant SIMATIC
engineering tools and they can also be processed in the
controller. The engineering outlay for the PLC and HMI have
been drastically reduced due to the complete integration in
the SIMATIC concept for system error messages.
© Siemens AG 2014