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NS-105 5 Port Switch
10/100 Fast Ethernet Switch
Installation Guide

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Table of Contents
1. Introduction……………………………………………………
3
1.1 Features………………………………………………………… 4
1.2 Specifications…………………………………………………... 5
2 Installing the Switch…………………………………………..
6
2.1 Unpacking……………………………………………………… 6
2.2 Checking Power…………………………...…………………… 6
3. Making Network Connections………………………………..
7
3.1 Network Switched Ports……………………………………….. 7
3.2 UTP Cable……………………………………………………... 8
3.3 UTP Connections…………...………………………………….. 9
3.4 Operating Mode……………………………………………….. 10
4. LED Indicators………………………………………………..
11
4.1 LED Panel……………………………………………………… 11
4.2 Interpretation……………………………………........................ 11

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1. Introduction
NS-105 Industrial Switches are DIN-Rail mounting and designed
for industrial environments. Their rugged packaging and protected
circuitry keep them working under conditions that may cause office-grade
units to fail.
Industrial Ethernet applications are demanding - This 5-port Fast Ethernet
switch become the basic unit of the whole Ethernet network. It is also the
good companion of our I-7188EX and I-8000 ethernet embedded
controller. The NS-105 comes with multiple ports, each capable of
transmitting or receiving information simultaneously at full wire speed to
control and allocate the network bandwidth. Besides that, the NS-105
Industrial Ethernet Switch automatically determines and remembers
where an Ethernet device is located and routes the messages only through
the appropriate port. This minimizes network loading and enables true
deterministic communications over Ethernet
Rear Panel
Front Panel
The key features of this switch unit are:
z Optimized Bandwidth : Combining five 10/100Mbps-based Fast
Ethernet switched ports, the switch delivers a high network
bandwidth for your Fast Ethernet network
z Easy Migration : With 10BASE-T support on each port, the switch

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provides a non-disruptive and smooth migration path from Ethernet
to a Fast Ethernet network.
z Easy Installation : With the functions of auto-speed-sensing and
auto-negotiation on each port, the switch supports plug-and-play
installation which eliminates configuration problems.

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1.1 Features
z IEEE 802.3 10BASE-T, and IEEE802.3u 100BASE-TX standards
z Five 10/100BASE-TX auto-negotiation switched ports for flexible
connections to desktop PCs, servers and Ethernet hubs.
z The 10/100BASE-TX switched support :
Auto speed sensing for 100Mbps or 10Mbps connection
Auto Configuration with auto-negotiation devices
Full-duplex or half-duplex operation
z Self learning for active MAC addresses
z Store and forward switching to ensure only good packets are
forwarded
z Forwarding and filtering at full wire speed
z Supports IEEE 802.3x flow control for full-duplex operation
z Supports back-pressure flow control for half-duplex operation
z Comprehensive LED indicators provide quick, easy to read port and
switch information

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1.2 Specifications
Port 1-4
10BASE-T/100BASE-TX connectivity
One MDI-X RJ-45 jack
Port 5
10BASE-T/100BASE-TX connectivity
One MDI-X RJ-45 / MDI RJ-45 jack
(by Push Button setting)
Cables
10BASE-T Cat.3,4,5 UTP cable (100meters max.)
100BASE-TX Cat.5 UTP cable (100meters max.)
LED indicators
Power status
Link/Activity/Speed/Duplex/Collision status per port
Filtering rate
14,880pps for Ethernet(100BASE-T)
148,800pps for Fast Ethernet(100BASE-TX)
Forwarding rate
14,880pps for Ethernet(10BASE-T)
148,800pps for Fast Ethernet(100BASE-TX)
Filtering address
Multicast/Broadcast/Unicast address
8K MAC address per unit
RAM buffers
256KB
Environment
Temperature
Relative humidity
0
0
C to 600C
10% to 90% non-condensing
Dimensions
70mm x 160mm x 120mm
Power
Requirement
+10 ~ +30 VDC
Power
Consumption
10 W

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2. Installing the Switch
2.1 Unpacking
Check to see that you have everything before you start the installation.
z Installation guide
z The switch unit
2.2 Checking Power
Since NS-105 consume 10 W power, make sure your power
supply can meet this demand.
Input DC voltage range: 10~30V
The screw terminal of the DC power input is located on the front of the
switch as shown below :
Front Panel
GND
F.G .
+VS

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3. Making Network Connections
3.1 Network Switched Ports
There are five ports on the switch for connection to five LAN segments.
Each segment is an independent shared network in one collision-domain.
TP Port 1-4 (MDI-X jacks)
MDI-X
MDI
z Five 10/100BASE-TX switched ports
Each port consists of one RJ-45 connector and is used for connection
to either a 10BASE-T or 100BASE-TX device. The RJ-45 connectors
are fixed MDI-X jacks, which are designed with internal crossover
function. It allows a connection to an end station using
straight-through UTP cable.
z MDI Jack support for Port 5
One additional push button is provided for Port 5 to switch MDI-X or
MDI. It is useful when using Port 5 as an uplink port and using
straight-through UTP cable for the connection to any device.
RJ-45
Pin Definition Port 1-4 Port 5
(Push Button Setting)
MDI-X
1
2
3
6
4,5,7,8
RX+
RXTX+
TXNC
ˇ ˇ
MDI
1
2
3
6
4,5,7,8
TX+
TXRX+
RXNC
N/A
ˇ

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3.2 UTP Cable
When making a connection to another device using straight-through UTP
cable, make sure MDI-X to MDI connection rule is followed. The
following figure illustrates the pin assignments of a straight-through UTP
and a crossover UTP cable :
1
1
1
RJ-45 plug
RJ-45 plug
RJ-45 plug
Straight-through UTP
Crossover UTP
RJ-45 plug
1
2
2
2
2
3
3
3
3
6
6
6
6
It is suggested to use straight-through UTP cables for all UTP
connections. The maximum length and UTP cable categories used for the
connections to a 10BASE-T device and 100BASE-TX device are :
CONNECTED DEVICE UTP CABLE USED & MAXIMUM LENGTH
10BASE-T device Cat. 3,4,5 UTP(100meters)
100BASE-TX device Cat. 5 UTP(100meters)

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3.3 UTP Connections
The NS-105 switch can support connections to the following
devices:
z 10BASE-T network cards
z 10/100BASE-TX network cards
z 10BASE-T hub ports
z 100BASE-TX hub ports
z 10/100BASE-TX dual speed hub ports
z 10/100BASE-TX switch ports
z Ethernet devices
z Ethernet Embedded controller, such as I-7188EX, I-7188EA,
I-8430,I-8431, I-8830, I-8831,I-8437, I-8837, I-8438, I-8838
The following figure shows some connection examples and also
specifies the maximum distance of each connections:
1X 3X 4X 5X 6X 8X UPLink7X2X
10BASE-T hub
UTP cable (100 meters max.)
UTP cable (Cat.3, 1, or 5 UTP 100 meters max.
Cat.5 UTP(100 meters max.)
10BASE-T or
10/100BASE-TX
network card
G
N
D
+
V
s
I
N
I
T
*
R
X
D
1
D
2
-
D
2
+
C
T
S
1
R
T
S
1
T
X
D
1
Programable controller with
10BASE-T or 100BASE-TX Ethernet port
I-7188EX
MDI-X
MDI

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3.4 Operating Mode
All switched ports are designed as auto-negotiation capable switched
ports. Each port can determine the speed and duplex type used
automatically through an auto-negotiation process with the remote
connected auto-negotiation device. The auto-negotiation process is
performed when the connection is made.
When connecting to a non-auto-negotiation device, each TP port also
features the capability to auto-sense the connection speed.
The following table lists the operation mode used for the switched port
when it connects to different devices. The operating mode includes the
connection speed and duplex type.
Connected Device Operation Mode Used
10BASE-T hub 10Mbps, half-duplex
100BASE-TX hub 100Mbps, half-duplex
Auto-negotiation device Auto-negotiation
*2
Non-auto
*1
half-duplex
device
Auto-speed-sensing *3,
half-duplex
Non-auto full-duplex device Not supported
*1 Non-auto : non-auto-negotiation
*2 determined through auto-negotiation process
*3 speed is determined by auto-sensing function
Most of 10BASE-T hubs and 100BASE-TX hubs are non-autonegotiation devices and operate on half-duplex mode.

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4. LED Indicators
4.1 LED Panel
The NS-105 switch provides comprehensive LED indicators for
diagnosing and monitoring the operation of the unit as shown below :
4.2 Interpretation
Each port has three LEDs to indicate the port status including cable link,
connection speed, activity, collision and duplex mode. Every port has
identical interpretations for the LED display as follows:
LED NAME STATE INDICATION
PWR On The power to the switch is on.
PWR Off The power to the switch is off
Link/Act. On An active link is established.
Link/Act. Blink Tx or Rx activities.
Link/Act. On There is no active link established.
10/100M On 100Mbps link is established.
10/100M Off 10Mbps link is established.
FDX/Col. On Full duplex is used.
FDX/Col. Off Half duplex is used.
FDX/Col. Blink Half duplex and collision occurrences.