Korenix JetNet 3505 User manual

Korenix JetNet 3500 Series
Industrial Unmanaged Redundant
Ethernet Rail Switch
User’s Manual
First Edition, July 2005
www.korenix.com

Korenix JetNet 3500 Series
Industrial Unmanaged Redundant
Ethernet Rail Switch
User’s Manual
Copyright Notice
Copyright ©2005 Korenix Technology Co., Ltd.
All rights reserved.
Reproduction in any form or by any means without permission is prohibited.

Table of Contents
Chapter 1 Introduction.............................................................................................1-1
Overview...........................................................................................................1-2
Product Features..............................................................................................1-2
Package Checklist............................................................................................1-2
Chapter 2 Hardware Installation..............................................................................2-1
Introduction.......................................................................................................2-2
Panel Layouts ..................................................................................................... 2-2
Dimensions ......................................................................................................... 2-3
Reset Button ....................................................................................................... 2-3
DIP Switch........................................................................................................... 2-3
LED Indicators..................................................................................................... 2-4
Wiring the Power Inputs ...................................................................................2-4
Wiring the Ethernet Ports .................................................................................2-5
Wiring the Relay Output ...................................................................................2-5
Cabling .............................................................................................................2-6
DIN-Rail Mounting Installation..........................................................................2-6
Wall-Mounting Installation.................................................................................2-7
Setting Up Super Ring......................................................................................2-8
Installation and Testing.....................................................................................2-9
Upgrading Firmware.......................................................................................2-12
Chapter 3 Troubleshooting......................................................................................3-1
Appendix A Specifications.........................................................................................A-1

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Chapter 1 Introduction
Welcome to Korenix JetNet 3500 Series Industrial Unmanaged Redundant Ethernet Rail Switch.
JetNet 3500 Series includes 2 models: JetNet 3505, and JetNet 3508. JetNet 3500 Series is an
unmanaged redundant rail switch that is specially designed for industrial applications.
The following topics are covered in this chapter:
Overview
Product Features
Package Checklist

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Overview
Industrial environments are usually more demanding than office environments. Harsh
temperature conditions, vibration, dust, etc. all put a test on the quality and reliability of your
switches. To survive harsh industrial environments, Korenix provides you with JetNet 3500
Series, an Industrial 5-/8-port Unmanaged Redundant Ethernet Rail Switch. In addition to robust
design for coping with demanding industrial environments, JetNet 3500 Series also provides
Super Ring technology for network redundancy, and relay output alarm for port breakdown and
power failures. JetNet 3500 Series is a cost-effective solution ideal for your industrial
applications. JetNet 3500 Series not only gives you high speed data transmission over an
Ethernet network, but also provides redundant power inputs and reverse polarity protection. In
addition, JetNet 3500 uses an IP30 aluminum case, and has passed several safety certifications,
ensuring customers safe and reliable industrial applications.
Product Features
Korenix JetNet 3500 Series products have the following features:
5-port/8-port 10/100T(X) industrial switch
Supports Store-and-Forward switching architecture
Supports IEEE 802.3 10Base-T, 802.3u 100Base-TX
Supports auto MDI/MDI-X function
Supports Super Ring Technology
Relay output alarm for port break and power failure
Supports IEEE 802.3x flow control
¾Flow control for full-duplex mode
¾Back pressure for half-duplex mode
Provides redundant dual power inputs
Aluminum case with IP30 protection
2K MAC address table
DIN-Rail and wall mountable design
Package Checklist
Korenix JetNet 3500 Series products are shipped with the following items:
JetNet 3500 Industrial 5-port/8-port Unmanaged Redundant Ethernet Rail Switch
One DIN-Rail clip (attached with the JetNet)
One wall mounting plate and six screws
User’s manual CD-ROM
Quick Installation Guide
If any of the above items is missing or damaged, please contact your local sales representative.

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Chapter 2 Hardware Installation
This chapter includes information of installation and configuration.
The following topics are covered in this chapter:
Introduction
¾Panel Layouts
¾Dimensions
¾Reset Button
¾DIP Switches
¾LED Indicators
Wiring the Power Inputs
Wiring the Ethernet Ports
Wiring the Relay Output
Cabling
DIN-Rail Mounting Installation
Wall-Mounting Installation

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Introduction
Panel Layouts
JetNet 3505
Front View
1 LED indicators
2 RJ45 Ethernet ports
3 DIP Switch
JetNet 3508
Front View
1 LED indicators
2 RJ45 Ethernet ports
3 DIP Switch

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Bottom View
The bottom view of the JetNet 3500
Industrial Entry-Level 5-port/8-port
Ethernet Rail Switch consists of one
terminal block connector with two DC
power inputs and one DC IN power
jack for an additional AC/DC power
adapter.
Dimensions
JetNet 3500 Industrial 5/8-port Unmanaged Redundant Ethernet Rail Switch dimensions are 54
mm (W) x 135 mm (H) x 105 mm (D).
Reset Button
The reset button provides users with a quick and easy way to restart and restore the settings to
the default values.
To restart, press the reset button for 2 seconds and release.
To restore to factory default settings, press the button for 5 seconds and release.
DIP Switch
JetNet 3500 Series provides the 1 set of DIP Switches for configuring the relay output alarm
operation modes and the master ring operation mode. The default value of DIP Switches is OFF.
JetNet 3505 5-port 10/100TX Unmanaged Redundant Industrial Switch
DIP Switch No Status Description
OFF Disable the corresponding port Alarm.
P1-P5 ON Enable the corresponding port Alarm. If the port’s link fails, the
FAULT LED will light up.
OFF Disable the switch to be the ring master in the Super Ring
topology.
P6 ON Enable the switch to be the ring master in the Super Ring
topology.
JetNet 3508 8-port 10/100TX Unmanaged Redundant Industrial Switch
DIP Switch No Status Description
OFF Disable the corresponding port Alarm.
P1-P8 ON Enable the corresponding port Alarm. If the port’s link fails, the
FAULT LED will light up.
OFF Disable the switch to be the ring master in the Super Ring
topology.
P9 ON Enable the switch to be the ring master in the Super Ring
topology.

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Note: 1. When the port alarm is enabled, the FAULT LED will light up when port failures occur.
2. After you set the switch to be the ring master in a Super Ring topology, you have to
restart this switch for the setting to be activated.
LED Indicators
There are 6/7 diagnostic LEDs and 8/12 port LEDs located on the front panel of JetNet
3505/3508 Industrial Ethernet Rail Switch. These LED indicators provide administrators with
real-time system status. The table below gives descriptions of the function of each LED indicator.
LED Status Description
Green Power is on.
PWR Off No power is being supplied.
Green Power is on.
PWR 1 Off No power is being supplied.
Green Power is on.
PWR 2 Off No power is being supplied.
Green This switch is the ring master in the Super Ring
topology
R.M. (Ring Master)
Off This switch is not the ring master in the Super
Ring topology
Green A network device is detected.
Blinks The port is transmitting or receiving packets from
the TX (FX) device.
LNK/ACT of Port 5 or
Port 7/8
Off No device is attached.
Orange The port is operating in full-duplex mode.
Blinks Collision of packets occurs.
FDX/COL of Port 5 or
Port 7/8 Off The port is in half-duplex mode or no device is
attached.
Orange The port is operating in full-duplex mode.
Blinking
orange Collision of packets occurs.
Off The port is in half-duplex mode or no device is
attached.
Green A network device is detected.
Blinking
green The port is transmitting or receiving packets from the TX device.
Port Status (Port 1 to 4
or Port 1 to Port 6)
Off No device is attached.
Wiring the Power Inputs
1. Insert the positive and negative wires into the V+ and V- contact on the terminal block
connector.

Hardware Installation
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2. Tighten the wire-clamp screws to prevent the DC wires from being loosened.
Note: The suitable electric wire ranges from 12 to 24 AWG.
Note: The additional power jack is designed for office use.
Wiring the Ethernet Ports
RJ-45 ports with auto MDI-MDI-X function: JetNet 3505/3508 has five/four 10/100 Mbps
auto-sensing ports for 10Base-T or 100Base-TX device connection. The UTP ports will
auto-detect 10Base-T and 100Base-TX connections. Auto MDI/MDI-X function allows users to
connect another switch or workstation without changing straight-through or cross-over cabling.
See the figures below for the schematic diagram of straight-through and cross-over cabling.
Straight-through Cabling Schematic Cross-over Cabling Schematic
All ports of JetNet 3505/3508 support auto-MDI/MDI-X function. When you use an Ethernet cable
to connect other devices, such as computers, switches or hubs, pin 1, 2, 3, and 6 of the 8-pin
RJ45 connector are used to communicate with the connected devices. Pin1, 2, 3, and 6’s signals
are converted by the MDI-X function, as shown in the table below.
Pin MDI-X Signals MDI Signals
1 RD+ TD+
2 RD- TD-
3 TD+ RD+
6 TD- RD-
Wiring the Relay Output
The relay output alarm contacts are in the middle of the terminal block connector as shown in the
figure below. By inserting the wires and set the DIP switch to “ON”, relay output alarm will detect
any power or port failures, and form an open circuit. The figure below illustrates an example of
how relay output alarm works.
Note: The connection point of alarm relay output only switches on and off the circuit. It does not
supply any power. The connection point can only bear 1A@DC24V.

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Fault Alarm Contact
24V DC Buzzer 24V Battery
The open circuit will form when the
power failure or port link failure.
The fault alarm device will send a
warning signal to warn the user, ex:
alarm sound or flash light.
1. Insert the alarm device’s negative wire into assigned position of the terminal block connector.
2. Tighten the wire-clamp screws to prevent the wires from being loosened.
Cabling
The cable connection between the JetNet 3505/3508 and the attached devices (switches, hubs,
workstations, etc.) must be less than 100 meters (328 ft.) long.
DIN-Rail Mounting Installation
The DIN-Rail clip is already attached to the JetNet 3500 Series products when packaged. If the
DIN-Rail clip is not screwed on the JetNet, follow the instructions and the figure below to attach
the DIN-Rail clip to the JetNet.
1. Use the screws to attach the DIN-Rail clip to the rear panel of the JetNet.
2. To remove the DIN-Rail clip, reverse step 1.

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Follow the steps below to mount the JetNet to the DIN-Rail track.
1. First, insert the upper end of the DIN-Rail clip into the back of the DIN-Rail track from its
upper side.
2. Lightly push the bottom of the DIN-Rail clip into the track.
3. Check if the DIN-Rail clip is tightly attached on the track.
4. To remove the JetNet from the track, reverse the steps above.
Wall-Mounting Installation
Follow the steps below to install the JetNet with the wall mounting plate.
1. To remove the DIN-Rail clip from the JetNet, loosen the screws from the DIN-Rail clip.
2. Place the wall mounting plate on the rear panel of the JetNet.
3. Use the screws to tighten the wall mounting plate onto the JetNet.
4. Use the hook holes at the corners of the wall mounting plate to hang the JetNet onto the wall.
5. To remove the wall mounting plate, reverse the steps above.

Korenix JetNet 3500 Series Industrial Unmanaged Redundant Ethernet Rail Switch User’s
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Setting Up Super Ring
JetNet 3500 Series supports the Super Ring technology that can help your network system
recovery from any of network connection failure within less than 300ms, making your network
system more reliable. The Super Ring algorithm is like Spanning Tree Protocol (STP) algorithm,
but it has faster recovery time than STP. The following figure is an example of Super Ring
application.
Super Ring is using the last two UTP ports of JetNet 3505/3508 for setting a Super Ring topology.
For JetNet 3505, port 4 and 5 will be used to set up a Super Ring topology, and for JetNet 3508,
port 7 and 8 will be used to set up s Super Ring topology.

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JetNet 3500 Series provides plug-n-play Super Ring function. When JetNet 3500s are not
connected in a Super Ring topology, these 5/8 ports serve as Ethernet ports. But, when you set
up a group of JetNet 3500s in a Super Ring topology by using port 4/5 of JetNet 3505 or port 7/8
of JetNet 3508, the JetNet 3500s will auto-detect the Super Ring setup. You don’t have to do
anything to enable or disable Super Ring function. One of the segments in the Super Ring
topology will be considered as the backup path. Normally, this backup path is blocked. But when
network disconnection occurs, the blocked backup path will be activated to restore the network
connection within less than 300 ms.
In a Super Ring topology, you need to set one of the JetNet 3500s to be the Ring Master. To do
so, set the DIP Switch located on the front panel of the JetNet 3500 that has R.M. written next to
it to ON position (See more details in DIP Switch section). Ring Master will be responsible for
negotiating and placing commands to other switches in the Super Ring topology. If there are
more than 2 switches that are set to be the Ring Master, JetNet 3500 will automatically select the
one that has the smallest MAC address range to be the Ring Master.
Installation and Testing
The following figure illustrates a typical application of JetNet 3500 Series Industrial 5-port/8-port
Entry-Level Ethernet Rail Switch.
1. Take your JetNet Industrial 5/8-port Unmanaged Redundant Rail Switch out of the package
box.
2. Check if the DIN-Rail clip is attached to the JetNet. If the DIN-Rail clip is not attached to the
JetNet, refer to DIN-Rail Mounting section for DIN-Rail installation. If you want to wall-mount
the JetNet, refer to Wall-Mounting Installation section.
3. To place the JetNet on the DIN-Rail track or wall, refer to the Wall-Mounting Installation
section.
4. Pull the terminal block off the JetNet and wire the power lines. Refer to the Wiring the
Power Inputs section for how to wire the power inputs.

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5. PWR1 and PWR2 dual power inputs can be connected to power sources simultaneously.
When the primary power source fails (the default setting is PWR1), the system will
automatically switch to the secondary power source (PWR2), preventing any power
interruption.
6. Check the LED for PWR1 and PWR2 to make sure that your JetNet is operating normally.
Note: If you are using DC IN power jack to supply power to the JetNet, please check the PWR
LED.
7. Use Category 5 straight through Ethernet cables with RJ45 connectors to connect network
devices.
8. Connect one side of an Ethernet cable with a RJ45 connector to the JetNet’s Ethernet port
(RJ-45 port), and the other side of the Ethernet cable to the network device’s Ethernet port
(RJ-45 port).
Note: Make sure that the connected network switches support MDI/MDI-X function. If they do not
support this function, use a crossover Ethernet cable.
9. Check the port status LED indicator (blinking green) on the JetNet to see if the network
connection is successfully established.
10. Power on the host, activate the Command Line mode, and ping the connected Ethernet
device to see if it will respond.
11. To enable the “Command Line mode”, click on Run in the Start menu, type Command, and
click on OK to continue.
12. Type ping 192.168.1.1 command to check the connection. Here we use IP address
192.168.1.1 as an example.
13. Repeat step 10 to make sure that the connection of each device connected to the JetNet is
successfully established.
14. Power on the host, activate the Command Line mode, and ping the connected Ethernet
device by typing “ping –t 192.168.1.1” command to see if it will respond.
15. The parameter ”t” allows you to continue to ping the network device, as shown in the figure
below.

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Before you continue, make sure that both PWR1 and PWR2 are successfully connected to
power sources. When PWR1 fails, the LED for PWR1 will go out. At that moment, if the ping
command is still being replied to, then it proves that the redundant power input function works
normally.
16. Exit the Command Line mode, and connect PWR1 power input. At this stage, your JetNet
has been tested and the installation is complete.
17. See the figure below for setting up your industrial network with JetNets. Computer A needs
to connect several modems simultaneously in order to let a big number of users to access
this industrial network. However, Computer A does not have additional COM ports to
connect all of the modems. For this reason, we use a network solution.
18. We network enable the modems via serial-to-Ethernet converters, and use Ethernet cables
to connect Computer A and converters to the JetNet. Enter Command Line mode in
Computer A, and use ping command to see if the connections between Computer A and the
converters are working properly, as described in step 10 and 11.
19. Enter Telnet program in Computer A, type in the IP address of one of the converters, and
configure the serial port’s communication parameters. Follow this procedure to set up the

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other converters.
20. Install the virtual com port driver, and enter converters’ IP addresses.
21. Click on Computer A’s Control PanelÆDevice Manager, and make sure the system each
converter’s IP address is mapped to the corresponding com port.
22. Click on Computer A’s Dialer, and install modem driver. Configure the modem’s
corresponding com port as a virtual com port, enter a set of telephone number, and start
dialing. Verify that the modem did dial up, and the serial port’s communication parameters
are correct. Follow this procedure to verify each converter’s parameters are correct.
23. Click on Computer A’s dial out manager, and change the modem’s setting from dial up to dial
in. Follow this procedure to finish each modem’s setting.
The industrial network is now established successfully. Computer A is able to connect several
converters over the Ethernet via JetNet Series Industrial Ethernet Rail Converter, providing a
reliable network environment.
Upgrading Firmware
1. Disconnect the JetNet from the network, but keep the JetNet connected with the TFTP
server.
2. Set the DIP Switches to the settings as follows:
For JetNet 3505: RM = On, P4 = On, P2 =On, P5 = OFF, P3 = OFF, P1 = OFF.
For JetNet 3508: RM = On, P8 = Off, P7 = Off, P5 = Off, P4 =On, P3 = OFF, P2 = On, P1 =
OFF.
3. Set your TFTP server IP as 192.168.10.250, which is the dedicated TFTP server IP set up in
the JetNet.
4. Press the reset button for 5 seconds, and then the PWR1 and PWR2 LEDs will start to flash,
showing that TFTP firmware is being upgraded. The JetNet will automatically search for the
TFTP server, and update the firmware. Make sure the connection between the JetNet and
the TFTP server is intact when the firmware is being upgraded.
5. If any error occurs during the upgrading process, the FAULT LED will flash.
Note: Firmware-upgrading process must be performed under the situation that the JetNet is
disconnected from the network.

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Chapter 3 Troubleshooting
This chapter includes the information on general troubleshooting.
Make sure you are using the correct VDC power suppliers (12 to 48 VDC) or power
adapters. Do not use power adapters with DC output over 48V. It will damage devices.
Select Ethernet cables with specifications suitable for your applications to set up your
systems. Ethernet cables are categorized into unshielded twisted-pair (UTP) and shielded
twisted-pair (STP) cables. Category 3, 4, 5 Ethernet cables are suitable for systems with 10
Mbps transmission speed. For systems with 100 Mbps transmission speed, Category 5
Ethernet cables are the only suitable specifications for this environment. You also need to
make sure that the distance between each node cannot be longer than 100 meters (328
feet).
IF the power indicator does not turn on when the power cord is plugged in, you may have a
problem with power cord. Than check for loose power connections, power losses or surges
at power outlet. IF you still cannot resolve the problem, contact your local dealer for
assistance.