Phoenix Contact FL NAT SMN 8TX User manual

User manual
User manual for the NAT router with integrated
switch
UM EN FL NAT SMN 8TX

2016-02-05
PHOENIX CONTACT 7966_en_04
User manual for the NAT router with integrated switch
UM EN FL NAT SMN 8TX
04
—
Designation Version Order No.
FL NAT SMN 8TX 2989365
FL NAT SMN 8TX-M 2702443
User manual
Designation:
Revision:
Order No.:
This user manual is valid for:

PHOENIX CONTACT
Please observe the following notes
User group of this manual
The use of products described in this manual is oriented exclusively to:
– Qualified electricians or persons instructed by them, who are familiar with applicable
standards and other regulations regarding electrical engineering and, in particular, the
relevant safety concepts.
– Qualified application programmers and software engineers, who are familiar with the
safety concepts of automation technology and applicable standards.
Explanation of symbols used and signal words
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Published by PHOENIX CONTACT GmbH & Co. KG
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GERMANY
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PHOENIX CONTACT
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Table of contents
7966_en_04 PHOENIX CONTACT 1
Table of contents
1 FL NAT SMN 8TX(-M) ............................................................................................................1-1
1.1 Properties ...........................................................................................................1-1
1.1.1 Dimensions of the FL NAT SMN 8TX(-M) ...........................................1-3
1.2 Status and diagnostic indicators.........................................................................1-3
2 Mounting and installation ........................................................................................................2-1
2.1 Mounting and removing the FL NAT SMN 8TX(-M)............................................2-1
2.2 Installing the FL NAT SMN 8TX(-M) ...................................................................2-3
2.2.1 Connecting the 24 V DC supply voltage ..............................................2-3
2.2.2 Alarm contact ......................................................................................2-4
2.2.3 Assignment of the RJ45 Ethernet connectors .....................................2-4
2.2.4 RS-232 interface for external management ........................................2-5
2.3 Grounding...........................................................................................................2-5
3 Startup and functions ..............................................................................................................3-1
3.1 Configuration ......................................................................................................3-1
3.1.1 Assigning IP parameters at the WAN interface (port 1) .......................3-1
3.1.2 Assigning IP parameters at the LAN interface 
(port 2 to port 8) ..................................................................................3-2
3.1.3 IP address assignment using IPAssign.exe ........................................3-2
3.2 Frame switching at ports 2 - 8.............................................................................3-4
3.2.1 Store-and-forward ...............................................................................3-4
3.2.2 Multi-address function .........................................................................3-5
3.2.3 Learning addresses ............................................................................3-5
3.2.4 Prioritization ........................................................................................3-5
3.3 Network connection............................................................................................3-6
3.4 Configuration and diagnostics ............................................................................3-6
3.5 Using Smart mode..............................................................................................3-7
3.5.1 Activating Smart mode ........................................................................3-7
3.5.2 Default settings ...................................................................................3-7
4 Configuration and diagnostics .................................................................................................4-1
4.1 Web-based management (WBM).......................................................................4-1
4.1.1 General function ..................................................................................4-1
4.1.2 Requirements for the use of WBM ......................................................4-1
4.1.3 Functions/information in WBM ............................................................4-2
4.2 Routing - SMART Router..................................................................................4-30
4.2.1 Static routing .....................................................................................4-30
4.2.2 1:1 NAT routing .................................................................................4-31
4.2.3 Virtual NAT routing ............................................................................4-32

FL NAT SMN 8TX
2PHOENIX CONTACT 7966_en_04
4.3 Simple Network Management Protocol (SNMP)...............................................4-35
4.3.1 General function ................................................................................4-35
4.3.2 Schematic view of SNMP management ............................................4-35
4.4 Management via local RS-232 communication interface..................................4-39
4.4.1 General function ................................................................................4-39
4.4.2 User interface functions ....................................................................4-40
5 (Rapid) Spanning Tree ............................................................................................................5-1
5.1 (R)STP startup....................................................................................................5-1
5.1.1 Enabling (R)STP on all switches involved ...........................................5-1
5.1.2 Connection failure - Example ............................................................5-11
5.1.3 Mixed operation of RSTP and STP ...................................................5-12
5.1.4 Topology detection of a Rapid Spanning Tree network (RSTP) ........5-12
5.1.5 Configuration notes for Rapid Spanning Tree ...................................5-15
6 Media Redundancy Protocol (MRP) .......................................................................................6-1
6.1 General function .................................................................................................6-1
6.1.1 Network examples ..............................................................................6-2
6.2 Enabling web pages for using MRP in WBM ......................................................6-3
6.3 Configuration of MRP .........................................................................................6-4
6.3.1 MRP General ......................................................................................6-4
6.3.2 MRP Configuration ..............................................................................6-4
7 LLDP (Link Layer Discovery Protocol) ....................................................................................7-1
7.1 Basics.................................................................................................................7-1
8 Technical data and ordering data ............................................................................................8-1
8.1 Technical data ....................................................................................................8-1
8.2 Ordering data .....................................................................................................8-3

FL NAT SMN 8TX(-M)
7966_en_04 PHOENIX CONTACT 1-1
1 FL NAT SMN 8TX(-M)
1.1 Properties
The NAT router combines routing and switching functions in a single device. The FL NAT
SMN 8TX(-M) can be used to provide individual machines with the same IP addresses and
to then translate these IP addresses to the IP address areas of the higher-level company
network that are required for the application. This function is usually referred to as 1-to-1
NAT (1:1 NAT - Network Address Translation). Port 1 is the port via which the 1:1 NAT
implementation takes place in the higher-level network. Ports 2 to 8 are standard switch
ports for the lower-level network.
In addition to IP address translation, the FL NAT SMN 8TX(-M) provides several switch
ports (port 2 to port 8) in the lower-level machine network. In addition to the switch and
routing function, further (IT) functions are available, such as redundancy, port mirroring or
LLDP.
The FL NAT SMN 8TX(-M) can be configured via a web server and via SNMP (Simple
Network Management Protocol). A serial terminal interface is also available for initial
startup.
Figure 1-1 The FL NAT SMN 8TX(-M)
Future-proof networks for the highest demands
Maximum performance 10/100 Mbps on each RJ45 port
Maximum availability Maximum network availability
A device design that does not use a fan, the redundant power supply, and conformance with
all relevant industrial standards in terms of EMC, climate, mechanical load, etc. ensure the
highest possible level of availability.
Quick media redundancy Redundancy can be created with standards: the Rapid Spanning Tree Protocol ensures the
safe operation of the entire network regardless of topology, even in the event of a cable
interrupt.

FL NAT SMN 8TX(-M)
1-2 PHOENIX CONTACT 7966_en_04
All information Clear information
Two LEDs per port with switchable information ensure that you always have sufficient local
information. A web server and an SNMP agent are provided for diagnostics, maintenance,
and configuration via the network. A terminal access point can be used for local operation.
Port mirroring Port mirroring can be used to monitor data traffic on the network connections or as an
important service function.
Features and fields of application of the FL NAT SMN 8TX(-M)
– Use of different routing modes
- Virtual NAT, 
- 1:1 NAT
- Static routing
– Increased network performance by filtering data traffic:
- Local data traffic remains local. 
- The data volume in network segments is reduced.
– Easy network expansion and network configuration.
– Coupling copper segments with different transmission speeds.
Automatic detection of 10 Mbps or 100 Mbps data transmission speed with
autocrossing.
– Support of various topologies and meshed structures as well as ring topologies with
special ring detection.
– Configuration of the switch using web-based management, SNMP or locally via an 
RS-232 interface.
– Port mirroring
– Topology detection using LLDP (Link Layer Discovery Protocol).
– Address assignment via BootP, DHCP or statically.
– Diagnostic/status indicators
Important information is displayed directly on the device. Each port has two LEDs. The
"LNK" LED always indicates the "LINK", while the other LED display is set with the
"MODE" function switch.
– MODE switch for LEDs 
The MODE switch can be used to specify which information is displayed by the second
port-specific LED. The three LEDs below the switch indicate the selected mode. This
information is then displayed by all port-specific LEDs (see also example on page 1-4).
– Mini-DIN RS-232
RS-232 interface in Mini-DIN format for local configuration via the serial interface.
– Supply voltage connection
The supply voltage can be connected via four positions of the 6-pos. COMBICON
connector (redundancy is optional); the floating alarm contact can be connected via the
remaining two positions.

FL NAT SMN 8TX(-M)
7966_en_04 PHOENIX CONTACT 1-3
1.1.1 Dimensions of the FL NAT SMN 8TX(-M)
Figure 1-2 Housing dimensions of the FL NAT SMN 8TX(-M) in millimeters
Depth from top edge of DIN rail including MEM PLUG: 175 mm
1.2 Status and diagnostic indicators
Des. Color Status Meaning
US1 Green ON Supply voltage 1 in the tolerance range
OFF Supply voltage 1 too low
US2 Green ON Supply voltage 2 in the tolerance range
OFF Supply voltage 2 too low
FAIL Red ON Alarm contact open, i.e., an error has occurred
OFF Alarm contact closed , i.e., an error has not occurred

FL NAT SMN 8TX(-M)
1-4 PHOENIX CONTACT 7966_en_04
Example:
In Figure 1-3, the LED indicators have the following meaning:
A: The MODE switch has been set to display the duplex mode (FD); the mode LED now
indicates that the port is in full duplex mode.
B: The switch has been set to display the data transmission rate (SPD); the mode LED now
indicates that the port is operating at 100 Mbps.
Figure 1-3 Example for status indicators
Des. Color
of
MODE
LED at
the
port
Status Meaning
An additional LED is located on the front of the FL NAT SMN 8TX(-M) for each port. The function of the second LED (MOD)
for each port can be set using the MODE switch (see also example below). There are three options (during the boot process
the Link LEDs of the ports are permanently on):
LNK
(Link)
Green ON Transmitting/receiving telegrams
OFF Not transmitting/receiving telegrams
SPD
(Speed)
Green ON 100 Mbps
OFF 10 Mbps if Link LED is active at the port
FD
(Duplex)
Green ON Full duplex
OFF Half duplex
ACT/SPD/FD Green Flashing Switch is in Smart mode
MODE
ACT SPD FD
LNK MOD
MODE
ACT SPD FD
LNK MOD
AB

Mounting and installation
7966_en_04 PHOENIX CONTACT 2-1
2 Mounting and installation
2.1 Mounting and removing the FL NAT SMN 8TX(-M)
Mount the FL NAT SMN 8TX(-M) on a clean DIN rail according to DIN EN 50022 (e.g.,
NS 35... from Phoenix Contact). To avoid contact resistance, only use clean, corrosion-free
DIN rails. End clamps (E/NS 35N, Order No. 0800886) can be mounted to the right and left
of the device to stop the modules from slipping on the DIN rail.
Mounting:
1Place the module onto the DIN rail from above (A). The upper holding keyway of the
module must be hooked onto the top edge of the DIN rail. Push the module from the
front towards the mounting surface (B).
Figure 2-1 Snapping the FL NAT SMN 8TX(-M) onto the DIN rail
2Once the module has been snapped on properly, check that it is fixed securely on the
DIN rail. Check whether the positive latch is facing upwards, i.e., snapped on correctly.
A1
A2
A

FL NAT SMN 8TX(-M)
2-2 PHOENIX CONTACT 7966_en_04
Removal:
1Pull down the positive latch using a suitable tool (e.g., screwdriver). The positive latch
remains snapped out. Then swivel the bottom of the module away from the DIN rail
slightly (A). Next, lift the module upwards away from the DIN rail (B).
Figure 2-2 Removing the FL NAT SMN 8TX(-M)
A
B1
B2
B

Mounting and installation
7966_en_04 PHOENIX CONTACT 2-3
2.2 Installing the FL NAT SMN 8TX(-M)
2.2.1 Connecting the 24 V DC supply voltage
The FL NAT SMN 8TX(-M) is operated using a 24 V DC voltage, which is applied via
COMBICON. If required, the voltage can also be supplied redundantly (see Figure 2-4).
Figure 2-3 Supplying the FL NAT SMN 8TX(-M) using one voltage source
Redundant 24 V DC supply
Figure 2-4 Supplying the FL NAT SMN 8TX(-M) using two voltage sources
If redundant power supply monitoring is active (default setting), an error is indicated if only
one voltage is applied. A bridge between US1 and US2 prevents this error message. It is
also possible to deactivate monitoring in web-based management or via SNMP.
OUT
24 V DC
US1 GND
US2 GND
R1
R2
In order to reset the FL NAT SMN 8TX(-M) on power up, the power supply must be
interrupted for at least 3 seconds.
OUT
24 V DC
24V 24V
0V 0V
US1 GND
US2 GND
R1
R2

FL NAT SMN 8TX(-M)
2-4 PHOENIX CONTACT 7966_en_04
2.2.2 Alarm contact
The FL NAT SMN 8TX(-M) has a floating alarm contact. When opening the contact, an error
is reported.
Figure 2-5 Basic circuit diagram for the alarm contact
The indicated error states are configured in web-based management or via SNMP. For a list
of error states that can be configured, please refer to Section ““Diagnostics/Alarm Contact”
Menu” on page 4-26.
2.2.3 Assignment of the RJ45 Ethernet connectors
In the event of non-redundant power supply, the device indicates a supply voltage failure
by opening the alarm contact. This error message can be prevented by connecting the
supply voltage to both terminal blocks in parallel, as shown in Figure 2-3, or by
deactivating redundant power supply monitoring in web-based management or via
SNMP.
Table 2-1 Pin assignment of RJ45 connectors
Pin number 10Base-T/10 Mbps 100Base-T/100 Mbps
1 TD+ (Transmit) TD+ (Transmit)
2 TD- (Transmit) TD- (Transmit)
3 RD+ (Receive) RD+ (Receive)
4- -
5- -
6 RD- (Receive) RD- (Receive)
7- -
8- -
R1 R2
67842015

Mounting and installation
7966_en_04 PHOENIX CONTACT 2-5
2.2.4 RS-232 interface for external management
The 6-pos. Mini-DIN female connector provides a serial interface to connect a local
management station. It can be used to connect a VT100 terminal or a PC with
corresponding terminal emulation to the management interface (for an appropriate cable,
please refer to page 8-3). Set the following transmission parameters:
Figure 2-6 Transmission parameters and assignment of the RS-232 interface
2.3 Grounding
All Factoryline devices must be grounded so that any possible interference is shielded from
the data telegram and discharged to ground potential.
A conductor of at least 2.5 mm2must be used for grounding. When mounting on a DIN rail,
the DIN rail must be connected to protective earth ground via grounding terminal blocks.
The module is connected to protective earth ground via the metal base element.
Bits per second 38400
Data bits 8
Parity None
Stop bits 1
Flow control None
Grounding protects people and machines against hazardous voltages. To avoid these
dangers, correct installation, taking the local conditions into account, is vital.
12
34
56
TxD RxD
res.
RTSCTS
RS-232 (V.24) interface
6151007

FL NAT SMN 8TX(-M)
2-6 PHOENIX CONTACT 7966_en_04

Startup and functions
7966_en_04 PHOENIX CONTACT 3-1
3 Startup and functions
3.1 Configuration
3.1.1 Assigning IP parameters at the WAN interface (port 1)
After the connection has been established between the WAN interface and the network, the
NAT router is started. By default upon delivery, the NAT router starts without an IP
configuration at the WAN port. It cyclically sends a DHCP discover as broadcast requests
to a DHCP server in the local network (company network). The server responds to the
requests with a DHCP offer, which contains the requested parameters. The device can then
be accessed via the IP parameters that have been assigned via DHCP. 
The “IPAssign.exe” addressing tool, which is available free of charge, can be used to assign
the IP parameters (see “IP address assignment using IPAssign.exe” on page 3-2).
The IP parameters of the WAN port can be configured statically via the RS-232 interface
using the password.
Figure 3-1 Serial interface settings
A local communication connection can be established to an external management station
via the RS-232 interface in Mini-DIN format. The “PRG CAB MINI DIN” programming cable,
Order No. 2730611, should be used for this. Communication is established using a
corresponding emulation between the NAT router and a PC (e.g., HyperTerminal under
Windows) and thus enables access to the user interface.
The IP parameters of the WAN port can now be modified via the RS-232 interface using the
password.
Modifications can only be made by entering the valid password. By default upon delivery,
the password is “private”.

FL NAT SMN 8TX(-M)
3-2 PHOENIX CONTACT 7966_en_04
3.1.2 Assigning IP parameters at the LAN interface 
(port 2 to port 8)
By default upon delivery, the NAT router starts without an IP configuration at the LAN port.
It sends BootP requests cyclically, which are answered by a BootP server with a
corresponding BootP reply.
The “IPAssign.exe” addressing tool, which is available free of charge, can be used to assign
the IP parameters (see “IP address assignment using IPAssign.exe” on page 3-2).
3.1.3 IP address assignment using IPAssign.exe
Step 1: downloading and executing the program
•On the Internet, select the link www.phoenixcontact.net/catalog.
•Enter the order number 2832700 in the search field, for example.
The IP addressing tool can be found under “Configuration file”.
•Double-click on the “IPAssign.exe” file.
•In the window that opens, click on “Run”.
Step 2: “IP Assignment Wizard”
The program opens and the start screen of the addressing tool appears.
The program is mostly in English for international purposes. However, the program buttons
change according to the country-specific settings.
The start screen displays the IP address of the PC. This helps when addressing the device
in the following steps.
•Click on “Next”.
Step 3: “IP Address Request Listener”
All devices sending a BootP request are listed in the window which opens. These devices
are waiting for a new IP address.
Figure 3-2 “IP Address Request Listener” window

Startup and functions
7966_en_04 PHOENIX CONTACT 3-3
In this example, the device has MAC address 00.A0.45.04.08.A3.
•Select the device to which you would like to assign an IP address.
•Click on “Next”.
Step 4: “SeT IP Address”
The following information is displayed in the window which opens:
– IP address of the PC
– MAC address of the selected device
– IP parameters of the selected device
(IP address, subnet mask, and gateway address)
– Any incorrect settings
Figure 3-3 "Set IP Address" window with incorrect settings
•Adjust the IP parameters according to your requirements.
If inconsistencies are no longer detected, a message appears indicating that a valid IP
address has been set.
•Click on “Next”.
Step 5: “Assign IP Address”
The program transmits the parameters set to the device.

FL NAT SMN 8TX(-M)
3-4 PHOENIX CONTACT 7966_en_04
Figure 3-4 “Assign IP Address” window
Following successful transmission, the next window opens.
Step 6: finishing IP address assignment
The window that opens informs you that IP address assignment has been successfully
completed. It gives an overview of the IP parameters that have been transmitted to the
device with the MAC address shown.
To assign IP parameters for additional devices:
•Click on “Back”.
To exit IP address assignment:
•Click on “Finish”.
3.2 Frame switching at ports 2 - 8
Devices in the company network (WAN) can access IP addresses of machines (at ports 2 -
8) in the production cell (LAN) without additional configuration. The FL NAT SMN 8TX(-M)
operates in store-and-forward mode. When receiving a data packet, the switch analyzes the
source and destination addresses. The switch stores up to 4000 MAC addresses with an
adjustable aging time of 10 to 825 seconds in its address table.
3.2.1 Store-and-forward
All data telegrams received by the switch are stored and checked for validity. Invalid or
faulty data packets (> 1522 bytes or CRC errors) and fragments (< 64 bytes) are rejected.
Valid data telegrams are forwarded by the switch.