
TN-5916 Series
Quick Installation Guide
Moxa ToughNet NAT Router
Edition 2.0, February 2017
Technical Support Contact Information
www.moxa.com/support
Moxa China (Shanghai office):
Toll
2017 Moxa Inc. All rights reserved.

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Overview
The ToughNet TN-5916 is a high performance M12 Layer 3 NAT Router
that supports Layer 3 routing functionality to facilitate the deployment of
applications across networks. The TN-5916 NAT router uses M12 and
other circular connectors to ensure tight, robust connections and
guarantee reliable operation against environmental disturbances, such as
vibration and shock. The TN-5916 NAT router supports is ola t ed p o we r in
the 24 to 110 VDC power input range, allowing the same model to be use d
at different sites around the globe, and provides up to 16 Fast Ethernet
M12 ports with 4 bypass relay ports. Furthermore, with a -40 to 75°C
operating temperature and IP54-rated waterproof enclosure, the router
can be deployed in harsh environments. The TN-5916 series Ethernet
routers are compliant with EN 50155/50121-4 requiremen ts, making the
router suitable for a variety of industrial applications.
Package Checklist
Your ToughNet TN-5916 NAT router is shipped with the following items. If
any of these items is missing or damaged, please contact your custo mer
service representative for assistance.
• 1 Moxa ToughNet NAT router
• M12 to DB9 console port cable
• 2 protective caps for console and relay output ports
• Panel mounting kit
• CD-ROM with user’s manual, Windows utility, and SNMP MIB file
• Quick installation guide (printed)
• Warranty card
Features
Anti-Vibration Circular Connectors for Robust Links
• M12 D-coding 4-pin female connectors for Fast Ethernet
10/100BaseT(X) ports.
• M12 A-coding 5-pin male connectors for console and relay output.
• M23 6-pin male connector for power input.
Dual Isolated Power Inputs
• 24 to 110 VDC (16.8 to 137.5 VDC), isolated.
Designed for Industry-specific Applications
• Bypass relay ensures non-stop data communication in the event the
router stops working due to a power failure.
• EN 50155/50121-3-2 compliant. See specs for details about
compliance with specific parts of the EN 50155 specifications.
• -40 to 75°C operating temperature range.
• IP54, rugged high-strength case.
• Panel mounting or DIN-rail mounting installation capability.

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Recommended Optional Accessories
• CBL-M23(FF6P)Open-BK-100-IP67: 1-meter M23 to 6-pin power
cable with IP67-rated female 6-pin M23 connector
• CBL-M12D(MM4P)/RJ45-100 IP67: 1-meter M12-to-RJ45 Cat-5E UTP
Ethernet cable with IP67-rated male 4-pin M12 D-coded connector
• CBL-M12(FF5P)/OPEN-100 IP67: 1-meter M12-to-5-pin power cable
with IP67-rated female 5-pin M12 A-coded connector
• M12D-4P-IP68: Field-installable M12 D-coded screw-in connector,
male 4-pin, IP68-rated
• M12A-5P-IP68: Field-installable M12 A-coded screw-in connector,
female 5-pin, IP68-rated
• CAP-M12F-M: Metal cap for M12 female connector
• DK-DC50131: DIN-rail mounting kit, 50 x 131 mm

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TN-5916 Panel Layouts
2. Screw holes for panel mounting kit
3. Console port
4. Grounding screw
5. Relay output port
6. Power input voltage range indicator
7. Power input port (male 6-pin shielded M23 connector)
8. PWR1 LED: for power input 1
9. PWR2 LED: for power input 2
MSTR/HEAD LED: for ring master or chain head
CPLR/TAIL LED: for ring coupler or chain tail
TP port’s 10/100 Mbps LED
10/100BaseT(X) port (female 4-
pin shielded M12 connector with D
12 screw holes for DIN-rail mounting kit
E2 LED: Not used by the TN-5916 series
E1 LED: Not used by the TN-5916 series
20. Ports 9-10, 13-14 with relay bypass function

DO NOT open or remove the vent (#15). Removing the seal will
invalidate the
Ports (including 3, 5, and 14) that are not in use must b e tight ly
covered with protective caps (an optional accesso ry) to ensure
IP54/IP67
Mounting Dimensions (unit = mm)
TN-5916 Series

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Panel/Wall Mounting
STEP 1:
Mounting the TN-5916 to a wall requires 4 screws. Use the ToughNet
router as a guide to mark the correct positions of the 4 screws.
se the 4 screws in the panel
mounting kit. If you would like to
use your own screws, make sure
the screw head
mm and 7.0 mm in diameter and
the shaft
Do not screw the screws in all the way—leave a space of about 2 mm to
allow room for sliding the ToughNet router between the wall and the
screws.
Before tightening the screws into the wall, make sure the screw
head and shaft size are suitable by inserting the screw through
one of the keyhole-shaped apertures of the ToughNet router.
STEP 3:
Once the screws are fixed in the wall, hang t he ToughNet router on the 4
screws through the large opening of the keyhole-shaped apertures, and
then slide the router downwards. Tighten the four screws for a dded
stability.
To provide greater protection from vibration and shock, use
screws with shaft diameter between 6.0 mm and 7.0 mm, and fix
the ToughNet
router onto the wall directly through the large
opening of the keyhole-shaped apertures.
DIN-Rail Mounting (optional)
Use the optional DIN-rail mounting
kit
-5916 on a 35 mm DIN-rail.
Use 12 screws (6 screws per plate)
to attach the two DIN
attachment plates to the rear panel
of the

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STEP 2:
If the spring-loaded bracket is locked in place, push the recessed button
to release it. Once released, you should feel some resistance from the
spring as you slide the bracket up and down a few millimeters in each
direction.
STEP 3:
Position the ToughNet
-rail, tilted, so the clamps hook
over the top edge of the rail.
Swing the router down fully onto
the DIN-rail, until both clamps
completely latch.
To remove the Moxa ToughNet Router from the DIN-rail, use a
screwdriver to pull out the two spring-loaded brackets from the bottom
until they are fixed in a “locked” position. Then, reverse Steps 3 and 4
above.
Wiring Requirements
Turn the power off before disconnecting modules or wires. The
correct power supply voltage is listed on the product label. Check
the voltage of your power source to make s ure you are using th e
correct voltage. Do NOT use a voltage greater than what is
specified on the product label.
These devices must be supplied by a SELV source as defined in
the Low Voltage Directive 2006/95/EC and 2004/108/EC.

Be sure to disconnect the power cord before installing and/or
wiring your Moxa
508 approva l. Use copper conductors only,
, and tighten to 4.5 inch-pounds. For use in pollution
Observe all electrical codes dictating the
allowable for each wire size. If the current
maximum ratings, the wiring could overheat,
damage to your equipment.
Please Read and Follow These Guidelines:
• Use separate paths to route wiring for power and devices. If power
wiring and device wiring paths must cross, make sure the wires are
perpendicular at the intersection point.
NOTE: Do not run signal or communicat ions wiring and power wiring
through the same wire conduit. To avoid interference, wires with
different signal characteristics should be routed separately.
• You can use the type of signal transmitted through a wire to
determine which wires should be k ept separat e. The ru le of thumb is
that wiring that shares similar electrical characteristics can be
bundled together.
• Keep input wiring and output wiring separated.
• It is strongly advised that you label wiring for all devices in the system
when necessary.
Grounding the ToughNet NAT Router
Grounding and wire routing help limit the effects of noise due to
electromagnetic interference (EMI). Run the groun d connection from the
grounding screw to the grounding surface prior to connecting devices.

This product is intended to be mounted to a well
mounting surface such as a metal panel.
Connecting the Power Supplies
The ToughNet TN-5916 series routers support two sets of power
supplies—power input 1 and power input 2. The M23 6-pin ma le
connector on the TN-5916’s front panel is used for the dual power inputs.
Pinouts for the Power Input Port on the TN-5916
Connect “PWR1 Live / DC +” to the
positive (+) terminal when using a DC
Connect “PWR1 Neutral / DC –” to the
negative (-) terminal when using a DC
Connect the “Chassis Ground” to the
safety ground terminal for DC inputs.
Connect “PWR2 Neutral / DC –” to the
negative (-) terminal when using a DC
Connect “PWR2 Live / DC +” to the
positive (+) terminal when using a DC
STEP 1:
Plug the power cord connector into the TN-5916’s power input port.
STEP 2:
Screw in the nut on the power cord connector to the power input
connector (on the router) to ensure a tight connection.
Before connecting the TN-5916 to the power input, make s ure the
power source voltage is stable.

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Connecting the Relay Outputs
Each TN-5916 router has two sets of relay outputs—relay output 1 and
relay output 2.The M12 A-coded 5-pin male connector on the TN-5916
front panel is used for the two relay outputs. Use a power cord with an
M12 A-coded 5-pin female connector to connect the relay contacts. You
can purchase an M12 power cable from Moxa; the model number is
CBL-M12 (FF5P)/OPEN-100 IP67.
Pinouts for the TN-5916’s Relay Output Port
N.C.: Not connected
FAULT:
The two sets of relay contacts of the M12 A-coded 5-pin male connector
are used to detect user-configured events. The two wires attached to the
fault contacts form an open circuit when a user-configured event is
triggered. If a user-configured event does not occur, the fault circuit
remains closed.
Connecting the Data Lines
10/100BaseT(X) Ethernet Port Connection
All TN-5916 models have 16 10/100BaseT(X) Ethernet ports (4-pin
shielded M12 connector with D coding). The 10/100TX ports located on
the TN-5916 front panel are used to connect to Eth ernet-enabled devices.
Most users configure these ports for Auto MDI/MDI-X mode, in wh ich case
the port’s pinouts are adjusted automatically depending on the type of
Ethernet cable used (straight-through or cross-over), and the type of
device (NIC-type or HUB/Switch/Router-type) connected to the port.
In what follows, we give pinouts for both MDI (NIC-type) ports and MDI-X
(HUB/Switch/Router-type) ports. We also give cable wiring diagrams for
straight-through and cross-over Ethernet cables.
10/100BaseT(X) Port Pinouts
Housing: shield

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M12 (4-pin, M) to M12 (4-pin, M) Cross-Over Cable Wiring
M12 (4-pin, M) to M12 (4-pin, M) Straight-Through Cable Wiring
M12 (4-pin, M) to RJ45 (8-pin) Cross-Over Cable Wiring
M12 (4-pin, M) to RJ45 (8-pin) Straight-Through Cable Wiring

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Bypass Relay Function
The TN-5916 is equipped with a bypass re lay function. When the router is
operating normally, these bypass ports work in the same way as the other
ports. That is, frame ingressions are processed and then for warded. If the
router st ops working due to a power failure, the byp ass relay function will
be triggered to ensure non-stop data communication.
The figure below illustrates the bypass relay function. For example, if
Router B loses power, then the two bypass function al ports will be
bypassed through the relay circuit and the transm ission line from Router
A to B and the transmission line from Router B to C will interconnect
automatically, ensuring that power continues to be supplied.
The bypass relay function helps the network recover from single-node
failures in a linear topology.
Since the maximum segment length of category 5 twisted-pair cable is
100 meters, cable length must be considered when designing a network
that utilizes this function. For examp le, the total length of the cable s from
Router A to B and from B to C must be no more than 100 meters. Th is way,
if the two adjacent nodes (router B and C for example) encounter a power
failure, there will be no stoppage, provided that the total length of the
cables A-to-B, B-to-C, and C-to-D are no more than 100 meters.
The bypass relay function works best for networks with linear topologies.
ToughNet™ routers with bypass relay function are not recommended to
be used in networks that employ ring topologies because network loops
may occur when redundancy protocols such as RSTP or TurboRing™ are
applied.

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LED Indicators
Several LED indicators are located on the ToughNet router’s front panel.
The function of each LED is described in the table below.
Power is being supplied to power input
PWR1.
Power is not being supplied to power
input PWR1
Power is being supplied to power input
PWR2.
Power is not being supplied to power
input PWR2.
FAULT RED
ON
When the corresponding PORT alarm is
enabled, and a user-
configured event is
triggered.
When the corresponding PORT alarm is
enabled and a user-configured event is
not triggered, or when the
corresponding PORT alarm is disabled.
When the TN router is either the Master
of this Turbo Ring, or the Head of this
When the TN router is Ring Master of
this Turbo Ring and the Turbo Ring is
broken, or it is Chain Head of this Turbo
Chain and the Turbo Chain is broken.
When the TN router is neither the Master
of this Turbo Ring, nor the Head of this
When the TN router enables the
coupling function to form a back-
up path
in this Turbo Ring, or it is the Tail of this
Turbo Chain.
When Turbo Chain is down.
When the TN router disables the
Turbo Ring, or it
is not the Tail of the Turbo Chain.
TP port’s 10 Mbps link is active.
Data is being transmitted at 10 Mbps.
TP port’s 10 Mbps link is inactive.
TP port’s 100 Mbps link is active.
Data is being transmitted at 100 Mbps.
TP port’s 100 Mbps link is inactive.

IEEE 802.3u for 100BaseT(X)
IEEE 802.3x for Flow Control
IEEE 802.1D for Spanning Tree Protocol
IEEE 802.1w for Rapid STP
IEEE 802.1Q for VLAN Tagging
IEEE 802.1p for Class of Service
IEEE 802.3ad for static Port Trunk
IGMPv1/v2, SNMPv1/v2c/v3, DHCP Server,
Syslog, SSH, SNMP Inform, LLDP, RIP V1/V2,
MIB MIB-II, Ethernet-like MIB, P-BRIDGE MIB,
Q-BRIDGE MIB, Bridge MIB, RSTP MIB, RMON
IEEE802.3x flow control, back pressure flow
control
Max. Number of
Available VLANs
Front cabling, M12 connector, 10/100BaseT(X)
auto negotiation speed, F/H duplex mode, and
auto MDI/MDI-X connection
M12 A-coding 5-pin male connector
PWR1, PWR2, FAULT, MSTR/HEAD, CPLR/TAIL
10/100M (fast Ethernet port)
Two relay outputs in one M12 A-coding 5-pin
male connector with current carrying capac ity of
1 A @ 30 VDC
WV: 24 to 110 VDC (16.8 to 137.5 VDC)
0.85 A @ 24 VDC, 0.17 A @ 110 VDC
Overload Current
Protection
Reverse Polarity
Protection
Housing Metal, IP54 protection (with protective caps on
250 × 175.8 × 116.3 mm (9.84 × 6.92 × 4.58 in)
Installation Panel mounting, DIN-Rail mounting

-40 to 75°C (-40 to 167°F)
-40 to 85°C (-40 to 185°F)
5 to 95% (non-condensing)
UL/cUL 508, EN 60950-1 (LVD)
CISPR 32, FCC Part 15B Class A
IEC 61000-4-2 ESD: Contact 6 kV; Air 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 20 V/m
IEC 61000-4-4 EFT: Power 2 kV; Signal 2 kV
IEC 61000-4-5 Surge: Power 2 kV; Signal 2 kV
IEC 61000-4-6 CS: 10 V
EN 50155*, EN 50121-4, EN 45545-2
*This product is suitable for rolling stock railway applications, as defined
by the EN 50155 standard. For a more detailed statement, click here:
www.moxa.com/doc/specs/EN_50155_Compliance.pdf
Note: Please check Moxa’s website for the most up-to-da t e certification
status.
MTBF (mean time between failures)