SIMREX Corporation
Dat aMover ESS
DataMover
DataMover
TM
ESS
TM
ESS-II
User’s Guide
Wireless IP/Ethernet Transceiver
DataMover ESS-II Firmware Release 1
DataMover ESS Firmware Release 6.2.1
SIMREX MAN.ESS-01, Rev. F1
MAY 2006
SIMREX CORPORATION
TABLE OF CONTENTS
1 PRODUCT OVERVIEW AND APPLICATIONS .......... 1
1.1 PRODUCT DESCRIPTION................................................................................................... 3
1.1.1 Model Offerings ..........................................................................................................................5
1.1.2 Differences Between ESS and ESS-II ........................................................................................6
1.2 APPLICATIONS.................................................................................................................... 6
1.2.1 Wireless LAN ..............................................................................................................................6
1.2.2 Point-to-Point LAN Extension .....................................................................................................7
1.2.3 Backhaul for Serial Radio Networks ...........................................................................................7
1.2.4 Multiple Protocols and/or Services .............................................................................................8
1.2.5 Wireless LAN with Mixed Services .............................................................................................9
1.2.6 Upgrading Older Wireless Network with
Serial Interfaces ..................................................................................................................................10
1.2.7 High-Speed Mobile Data ...........................................................................................................10
1.3 NETWORK DESIGN CONSIDERATIONS...........................................................................11
1.3.1 Extending Network Coverage with Repeaters ..........................................................................11
1.3.2 Protected Network Operation using Multiple Access Points ........................ .......... ......... ..........13
1.3.3 Collocating Multiple Radio Networks ........................................................................................13
1.4 SIMREX CYBER SECURITY SUITE..................................................................................14
1.5 ACCESSORIES..................................................................................................................16
2 TABLETOP EVALUATION AND TEST SETUP ....... 19
2.1 OVERVIEW......................................................................................................................... 21
2.2 STEP 1—INSTALL THE ANTENNA CABLING .................................................................. 21
2.3 STEP 2—MEASURE & CONNECT THE PRIMARY POWER............................................ 22
2.4 STEP 3—CONNECT PC TO THE TRANSCEIVER ........................................................... 22
2.5 STEP 4—REVIEW TRANSCEIVER CONFIGURATION ....................................................23
2.5.1 Getting Started .........................................................................................................................23
2.5.2 Procedure .................................................................................................................................23
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2.5.3 Basic Configuration Defaults ....................................................................................................23
2.6 STEP 5—CONNECT LAN AND/OR SERIAL EQUIPMENT............................................... 24
2.7 STEP 6—CHECK FOR NORMAL OPERATION ................................................................ 25
3 EMBEDDED MANAGEMENT SYSTEM ................... 27
3.1 MS INTRODUCTION..........................................................................................................29
3.1.1 Differences in the User Interfaces ............................................................................................29
3.2 ACCESSING THE MENU SYSTEM...................................................................................31
3.2.1 Methods of Control ...................................................................................................................32
3.2.2 PC Connection & Log In Procedures .......................................................................................32
3.2.3 Navigating the Menus ........................................................................ .... ... ... ... .... ... ... ................37
3.3 BASIC DEVICE INFORMATION.........................................................................................38
3.3.1 Starting Information Screen ......................................................................................................38
3.3.2 Main Menu ................................................................................................................................39
3.3.3 Configuring Basic Device Parameters ......................................................................................40
3.4 CONFIGURING NETWORK PARAMETERS ..................................................................... 42
3.4.1 Network Configuration Menu ....................................... ... ... .... ... ... ... ... .... ... ................................42
3.4.2 IP Address Configuration Menu ...............................................................................................44
3.4.3 Ethernet Port Configuration Menu ............................................................................................45
3.4.4 DHCP Server Configuration .................................................. ... ... ... ... .... ... ... ... .... ... ... ... .............46
3.4.5 SNMP Agent Configuration ......................................................................................................48
3.5 RADIO CONFIGURATION..................................................................................................50
3.5.1 Radio Configuration Menu ......................................................................................................50
3.5.2 Mobile Data Configuration ........................................................................................................57
3.6 CONFIGURING THE SERIAL INTERFACES.....................................................................60
3.6.1 Overview ..................................................................................................................................60
3.6.2 Serial Data Port Configuration Menu ........................................................................................63
3.6.3 Configuring for UDP Mode .......................................................................................................64
3.6.4 Configuring for TCP Mode ........................................................................................................67
3.6.5 Configuring for PPP Mode ........................................................................................................70
3.6.6 IP-to-Serial Application Example ..............................................................................................71
3.6.7 Point-to-Point Serial-to-Serial Application Example .................................................................72
3.6.8 Point-to-Multipoint Serial-to-Serial Application Example ..........................................................73
3.6.9 Mixed Modes ............................................................................................................................75
3.7 CYBER SECURITY CONFIGURATION ............................................................................. 77
3.7.1 Device Security ........................................................................................................................77
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3.7.2 Wireless Security ......................................................................................................................79
3.7.3 RADIUS Authentication ............................................................................................................81
3.7.4 RADIUS Configuration .............................................................................................................82
3.7.5 Certificate Management (Remote transceivers only) ...............................................................83
3.8 PERFORMANCE VERIFICATION......................................................................................84
3.8.1 Performance Information Menu ................................................................................................84
3.8.2 Network Performance Notes .................................... ... ... ... .... ... ... ... ... .... ... ... .............................95
3.9 MAINTENANCE..................................................................................................................99
3.9.1 Reprogramming Menu ............................................................................................................100
3.9.2 Configuration Scripts Menu ............... ... ... .... ... ... .....................................................................105
3.9.3 Authorization Keys Menu .......................................................................................................114
3.9.4 Auto-Upgrade/Remote-Reboot Menu .....................................................................................114
3.9.5 Radio Test Menu ....................................................................................................................115
3.9.6 Ping Utility Menu ....................................................................................................................117
3.9.7 Reset to Factory Defaults .......................................................................................................117
4 TROUBLESHOOTING AND
RADIO MEASUREMENTS .....................................119
4.1 TROUBLESHOOTING...................................................................................................... 121
4.1.1 Interpreting the Front Panel LEDs ..........................................................................................121
4.1.2 Troubleshooting Using the Embedded Management System ................................................122
4.1.3 Using Logged Operation Events .................................................. ... ... .....................................126
4.1.4 Alarm Conditions ....................................................................................................................126
4.1.5 Correcting Alarm Conditions ..................................................................................................128
4.1.6 Logged Events ........................................................................................................................129
4.2 RADIO (RF) MEASUREMENTS.......................................................................................131
4.2.1 Antenna System SWR and Transmitter Power Output ...........................................................132
4.2.2 Antenna Aiming ......................................................................................................................133
5 PLANNING A RADIO NETWORK .......................... 135
5.1 INSTALLATION PLANNING .............................................................................................137
5.1.1 General Requirements ...........................................................................................................137
5.1.2 Site Selection .........................................................................................................................139
5.1.3 Terrain and Signal Strength ....................................................................................................139
5.1.4 Antenna & Feedline Selection ................................................................................................140
5.1.5 How Much Output Power Can be Used? ...............................................................................143
5.1.6 Conducting a Site Survey .......................................................................................................143
5.1.7 A Word About Radio Interference ...........................................................................................144
5.2 dBm-WATTS-VOLTS CONVERSION CHART.................................................................. 147
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6 TECHNICAL REFERENCE ..................................... 149
6.1 DATA INTERFACE CONNECTORS.................................................................................151
6.1.1 LAN Port .................................................................................................................................151
6.1.2 COM1 Port .............................................................................................................................152
6.1.3 COM2 Port .............................................................................................................................152
6.2 FUSE REPLACEMENT PROCEDURE ............................................................................ 153
6.3 TECHNICAL SPECIFICATIONS.......................................................................................154
6.4 CHANNEL HOP TABLE....................................................................................................157
6.5 SNMP USAGE NOTES.....................................................................................................159
6.5.1 Overview ................................................................................................................................159
7 GLOSSARY OF TERMS & ABBREVIATIONS ....... 165
Copyright Notice
This publication is protected by U.S.A. copyright law. Copyright 2006, SIMREX Corporation. All
rights reserved.
ISO 9001 Registration
SIMREX Corporation DataMover products adheres to the internationally-accepted ISO 9001
quality system standard.
To our Customers
We appreciate your patronage. You are our business. We promise to serve and anticipate your
needs. We will strive to give you solutions that are cost effective, innovative, reliable and of the
highest quality possible. We promise to build a relationship that is forthright and ethical, one that
builds confidence and trust.
What Products are Covered in this Manual?
This manual covers two members of the SIMREX DataMover ESS Transceiver Series, both of
which are designed to be operated under the FCC’s Part 15 license-free rules. The ESS radio is a
Frequency Hopping Spread Spectrum (FHSS) transceiver that operates at data speeds of 256 and
512 kbps.
The ESS-II is a similar design, but it is certified under the Digital Transmission System (DTS) provisions of FCC Part 15 and can operate at data speeds of 512 or 1024 kbps. Operational differences
between these two models are identified, as necessary, in this manual.
NOTE: DataMover ESS and DataMover ESS-II transceivers are not over-the-air compatible.
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Other DataMover ESS Documentation
Installation Guide—The associated DataMover ESS Installation Guide, P/N MAN.ESS-INSTALL,
is provided with the transceiver and is limited to essential information needed for installers. The
installation guide assumes some guidance to installers will be provided by the readers of this
manual. This includes such things as antenna selection, radio communication site survey tools and
techniques, and network design.
Related Materials on the Internet—Data sheets, frequently asked questions, case studies, applica-
tion notes, firmware upgrades and other updated information is available on the SIMREX Web site
at www.simrex.com.
About SIMREX Corporation
For almost 2 decades, SIMREX Corporation’s wireless products have been providing wireless networking solutions with applications in SCADA, telemetry, telecommunications, mobile data and
online transaction markets. SIMREX Corporation provides licensed and unlicensed solutions,
installed worldwide.
The majority of SIMREX DataMover radios deployed are still installed and performing within our
customers' wireless networks. That’s because our DataMover products are designed and manufactured according to ISO 9001 control guidelines and meet stringent global quality standards.
Thanks to our durable products and comprehensive solutions, SIMREX is a wireless leader in
industrial automation—including oil and gas production and transportation, water/wastewater
treatment, supply and transportation, electric transmission and distribution and many other utility
applications. SIMREX is also at the forefront of wireless communications for private and public
infrastructure and online transaction processing. Now is an exciting time for SIMREX and our customers as we look forward to further demonstrating our abilities in new and emerging markets.
As your wireless needs change you can continue to expect more from SIMREX. We'll always put
the performance of your network above all. Visit us at www.simrex.com for more information.
OPERATIONAL & SAFETY NOTICES
RF Exposure
Professional installation required. The radio equipment described in this guide emits radio
frequency energy. Although the power level is low, the concentrated energy from a directional antenna may pose a health hazard. Do not allow people to come closer than 23 cm
(9 inches) to the antenna when the transmitter is operating in indoor or outdoor environments. More information on RF exposure is on the Internet at
www.fcc.gov/oet/info/documents/bulletins.
UL/CSA Notice
This product is available for use in Class 1, Division 2, Groups A, B, C & D Hazardous Locations. Such locations are
defined in Article 500 of the National Fire Protection Association (NFPA) publication NFPA 70, otherwise known as
the National Electrical Code.
The transceiver has been recognized for use in these hazardous locations by two independent agencies —Underwriters
Laboratories (UL) and the Canadian Standards Association (CSA). The UL certification for the transceiver is as a Recognized Component for use in these hazardous locations, in accordance with UL Standard 1604. The CSA Certification is in accordance with CSA STD C22.2 No. 213-M1987.
UL/CSA Conditions of Approval: The transceiver is not acceptable as a stand-alone unit for use in the hazardous
locations described above. It must either be mounted within another piece of equipment which is certified for
hazardous locations, or installed within guidelines, or conditions of approval, as set forth by the approving agencies.
These conditions of approval are as follows:
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The transceiver must be mounted within a separate enclosure which is suitable for the intended application.
The antenna feedline, DC power cable and interface cable must be routed through conduit in accordance with the
National Electrical Code.
Installation, operation and maintenance of the transceiver should be in accordance with the transceiver's installation
manual, and the National Electrical Code.
Tampering or replacement with non-factory components may adversely affect the safe use of the transceiver in haz-
ardous locations, and may void the approval.
A power connector with screw-type retaining screws as supplied by SIMREX must be used.
Do not disconnect equipment unless power has been switched off or the area is known to
be non-hazardous.
EXPLOSION
HAZARD!
Refer to Articles 500 through 502 of the National Electri cal Code (NFPA 70) for further
information on hazardous locations and approved Division 2 wiring methods.
FCC Part 15 Notices
The transceiver series complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation. This device is specifically designed to be used under Section 15.247
of the FCC Rules and Regulations. Any unauthorized modification or changes to this device without the express
approval of SIMREX Corporation may void the user’s authority to operate this device. Furthermore, the DataMover
ESS is intended to be used only when installed in accordance with the instructions outlined in this manual. Failure to
comply with these instructions may also void the user’s authority to operate this device.
Part 15 rules also require that the Effective Isotropic Radiated Power (EIRP) from an DataMover ESS installation not
exceed 36 dBm. Refer to Antenna & Feedline Selection on Page 140 for more information.
Industry Canada RSS Notices
Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device
must accept any interference, including interference that may cause undesired operation of the device.
To reduce potential radio interference to other users, the antenna type and its gain should be chosen so that the Equivalent Isotropic Radiated Power (EIRP) is not more than that permitted for successful communication.
This device as been designed to operate with the antennas listed below, and having a maximum gain of 12 dB.
Antennas not included in this list or having a gain greater than 12 dB are strictly prohibited for use with this device.
The required antenna impedance is 50 ohms. Refer to Table 5-3 on Page 146 for a list of antennas acceptable for use
with this transceiver.
Manual Revision and Accuracy
This manual was prepared to cover a specific version of firmware code. Accordingly, some screens and features may
differ from the actual unit you are working with. While every reasonable effort has been made to ensure the accuracy
of this publication, product improvements may also result in minor differences between the manual and the product
shipped to you. If you have additional questions or need an exact specification for a product, please contact our Customer Service Dept. using the information at the back of this guide. In addition, manual updates can often be found on
the SIMREX Web site at www.simrex.com.
Environmental Information
The manufacture of this equipment has required the extraction and use of natural resources. Improper disposal may
contaminate the environment and present a health risk due to hazardous substances contained within. To avoid dissemination of these substances into our environment, and to limit the demand on natural resources, we encourage you to
use the appropriate recycling systems for disposal. These systems will reuse or recycle most of the materials found in
this equipment in a sound way. Please contact SIMREX Corporation or your supplier for more information on the
proper disposal of this equipment.
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PRODUCT OVERVIEW
1
1 Chapter Counter Reset Paragraph
Contents
1.1 PRODUCT DESCRIPTION .....................................................3
1.2 APPLICATIONS.......................................................................6
AND APPLICATIONS
1.1.1 Model Offerings ........................................................................5
1.1.2 Differences Between ESS and ESS-II .....................................6
1.2.1 Wireless LAN ...........................................................................6
1.2.2 Point-to-Point LAN Extension ...................................................7
1.2.3 Backhaul for Serial Radio Networks .........................................7
1.2.4 Multiple Protocols and/or Services ........................................... 8
1.2.5 Wireless LAN with Mixed Services ...........................................9
1.2.6 Upgrading Older Wireless Network with
Serial Interfaces ..................................................................................10
1.2.7 High-Speed Mobile Data ..........................................................10
1.3 NETWORK DESIGN CONSIDERATIONS .............................. 11
1.3.1 Extending Network Coverage with Repeaters .........................11
1.3.2 Protected Network Operation using Multiple Access Points ....13
1.3.3 Collocating Multiple Radio Networks ........................................13
1.4 SIMREX CYBER SECURITY SUITE....................................... 14
1.5 ACCESSORIES....................................................................... 16
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1.1 PRODUCT DESCRIPTION
The SIMREX DataMover ESS transceiver provides an easy-to-install
wireless local area network (WLAN) service with long range and secure
operation. It supports both Ethernet and serial data interface options at
over-the-air data speeds of up to 1 Mbps (ESS-II) and 512 kbps (ESS).
NOTE: For information on the DataMover ESS ENI, which provides
expanded gateway and protocol conversion capabilities not
found in the DataMover ESS (DF1 to EIP, and MODBUS to
MODBUS TCP conversions), refer to the SIMREX ESS/ENI
Supplement.
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Figure 1-1. The SIMREX DataMover ESS Transceiver
Rugged Packaging
The transceiver is housed in a compact and rugged cast-aluminum case
that need only be protected from direct exposure to the weather. It contains a single printed circuit board with all necessary components for
radio operation and data communications. The only user-serviceable
component inside the case is a fuse on the DC power input line.
Simple Installation Most installations employ an omni-directional antenna at the Access
Point (AP) location and a directional antenna at each Remote unit. The
antenna is a vital link in the system and must be chosen and installed correctly. Consult INSTALLATION PLANNING on Page 138 for guidance
on choosing suitable installation sites and antennas.
For basic services, simply connect an antenna, connect your Ethernet
LAN to the transceiver’s LAN port, apply primary power, set a few operating parameters, and you are done. No license is required for operation
in the U.S.A., Canada, and many other countries. Check requirements
for your region before placing the transceiver in service.
Secure Operation Data network security is a vital issue in today's wireless world. The
DataMover ESS radios provide multiple tools to help you build a network that minimizes the risk of eavesdropping and unauthorized access.
Some are inherent in the radio's operation, such as the use of 900 MHz
spread-spectrum transmissions; others include data encryption,
enabling/disabling remote access channels, and password protection.
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Remember, security is not a one-step process that can simply be turned
on and forgotten. It must be practiced and enforced at multiple levels,
24 hours-a-day and 7 days-a-week. See “SIMREX CYBER SECURITY
SUITE” on Page 14 for more information about the transceiver’s secu-
rity tools.
Robust Radio
Operation
The transceiver is designed for frequency-hopping spread-spectrum
operation in the license-free 900 MHz Industrial, Scientific, and Medical (ISM) band. It can provide reliable communications at distances up
to 25 miles (40 km) over favorable terrain, even in the presence of weak
signals or interference. Frequency hopping allows the transceiver to
avoid interference from other transmitters in the same band, and provides frequency diversity for more reliable transmission. The
over-the-air MAC increases reliability by adding retries to failed messages.
The DataMover ESS-II transceiver, which is certified to operate under
DTS rules (hopping not required), also hops in order to achieve the same
benefits that are realized with the DataMover ESS transceiver which is
certified under FHSS rules.
Flexible Services Users with a mixture of equipment having Ethernet and serial data inter-
faces can choose to use one or two of the user-configurable serial ports
through the use of a Remote Dual Gateway. This flexibility allows the
transceiver to provide services in data networks that are being migrated
from legacy serial/EIA-232-based hardware to the faster and more
easily interfaced Ethernet world.
Flexible
Management
Configuration, commissioning, troubleshooting and other maintenance
activities can be done locally or remotely. Four different modes of
access are available: local RS-232 console, local or remote IP access
(via Telnet or SSH), web browser (HTTP, HTTPS, and SNMP
(v1/v2/v3). The text-based interface (RS-232 console Telnet and SSH)
is implemented in the form of easy-to-follow menus, and the terminal
server configuration includes a wizard to help you set up the units correctly.
Transceiver
Features
The transceiver’s design makes the installation and configuration easy,
while allowing for changes in the future.
• Long Range—Up to 25 miles (40 km) in line-of-sight conditions. Repeater stations may be used to extend the operational
range. (Refer to TECHNICAL SPECIFICATIONS on Page 154
for more detailed information on range.)
• Industrial-Grade Product—Extended temperature range for
trouble-free operation in extreme environments
• Robust Radio Communications—Designed to operate in dense,
high-interference environments
• Robust Network Security—Prevents common attack schemes
and hardware from gaining access or control of network. Common attack events logged and reported by alarms.
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• High Speed—1 Mbps (ESS-II) is 100-times faster than 9.6 kbps
radios. (ESS transceiver speed is 512 kbps).
• Plug-and-Play Connectivity—Ethernet bridge configuration
option requires minimal setup
• Serial Ports—Gateway for serial-based equipment to IP/Ethernet networks with embedded terminal server. Site-to-site configurations are also possible.
• Single hardware package provides configuration as Access
Point or Remote
1.1.1 Model Offerings
The transceiver comes in two primary models—Access Point and
Remote. Three types of Remote Gateways are available—the Ethernet
Bridge, the Serial Gateway, and the Dual Gateway supporting both
IP/Ethernet and serial services. Table 1-1 summaries the different interface abilities for each type.
A unit can be configured by the owner to operate as an Access Point or
as a Remote with some restrictions. Only the Dual Gateway Remote
units can be reconfigured as an Access Point. Ethernet Bridge and a
Serial Gateway Remotes cannot be reconfigured as Access Point unless
they are first upgraded to Dual Gateway type. This is accomplished with
an “Authorization Key” purchased from the factory. Each one of these
individual software keys is associated with the serial number of the corresponding unit.
Table 1-1. Transceiver Models and Data Interface Services
Model Type
3
Access Point
Remote… Ethernet
NOTES
1.Provides access to the embedded Management System on all units.
2.Can be upgraded to Dual Gateway with an Authorization Key.
3.Can be configured as an Access Point or Dual Gateway through the
embedded Management System.
N/A Yes Yes Yes
2
Bridge
Serial
Gateway
Dual Gateway
2
3
1
LAN
Yes No No
No Yes Yes
Yes Yes Yes
COM1
1
COM2
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1.1.2 Differences Between ESS and ESS-II
The ESS and ESS-II Transceivers, while similar in many respects, do
have some key differences. The main differences are summarized in
Table 1-2:
Table 1-2. Transceiver Differences (ESS vs. ESS-II)
Characteristic ESS ESS-II
Data Rate 256/512 kbps 512 kbps/1 Mbps
FCC Certification
Type
Encryption RC4-128 AES-128
Channel size 316.5 kHz 600 kHz
Channel operation Zones Channels
Firmware Specific for ESS Specific for ESS-II
NOTE: The DataMover ESS and DataMover ESS-II transceivers are
not over-the-air compatible.
FHSS DTS
1.2 APPLICATIONS
The following sections provide illustrations of typical transceiver installations. This is meant as an overview only. It is recommended that a network manager be involved in all installation planning activities.
1.2.1 Wireless LAN
The wireless LAN is the most common application of the transceiver. It
consists of a central control station (Access Point) and one or more associated Remote units, as shown in Figure 1-2 on Page 7. A LAN provides
communications between a central WAN/LAN and remote Ethernet
segments. The operation of the radio system is transparent to the computer equipment connected to the transceiver.
The Access Point is positioned at a location from which it can communicate with all of the Remote units in the system. Commonly, this is a
high location on top of a building or communications tower. Messages
are exchanged at the Ethernet level. This includes all types of IP traffic.
A Remote transceiver can only talk over-the-air to an Access Point unit
(AP). Peer-to-peer communications between Remotes can only take
place indirectly via the AP. In the same fashion, an AP can only talk
over-the-air to associated Remote units. Exception: Two APs can communicate with each other “off-the-air” through their Ethernet connectors
using a common LAN/WAN.
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Remote
R
R
SIMREX Corporation
emote
emote
LAN
LAN
Access Point
WAN/LAN
LAN
Remote
LAN
Figure 1-2. Typical Wireless LAN
1.2.2 Point-to-Point LAN Extension
A point-to-point configuration (Figure 1-3) is a simple arrangement
consisting of an Access Point and a Remote unit. This provides a communications link for the transfer of data between two locations.
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Access Point
Remote
LAN/WAN
LAN
Figure 1-3. Typical Point-to-Point Link
1.2.3 Backhaul for Serial Radio Networks
One of the primary design features of the transceiver is to provide a path
for serial devices to migrate to IP/Ethernet. Many radio networks in
operation today still rely on serial networks at data rates of 9600 bps or
less. These networks can use the transceiver as a means to continue
using the serial service, while allowing the rest of the infrastructure to
migrate to an IP format.
A Remote transceiver using one serial port for the data stream, and the
other for network-wide diagnostics can support operational radio networks built with SIMREX serial-based radios, such as DataMover
Transparent, DataMover SS and others. In the case of radios using a
single port for data and diagnostics, the capabilities are doubled. The
data streams are delivered to an IP socket in an application, or in serial
format using the Access Point.
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Figure 1-4. Backhaul Network
1.2.4 Multiple Protocols and/or Services
Prior to the DataMover ESS, two radios were often used to service two
different types of devices (typically connected to different SCADA
hosts). An ESS or ESS-II radio provides this functionality with a single
remote radio. Each of the two serial ports can be connected via IP to different SCADA hosts, transporting different (or the same) protocols.
Both data streams are completely independent and the transceiver provides seamless simultaneous operation as shown in Figure 1-5 on
Page 8.
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Figure 1-5. Multiple Protocol Network
By using a single radio, the cost of deployment is cut in half. Beyond
requiring only one radio instead of two, the biggest cost reduction comes
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from using half of the required infrastructure at the remote site: one
antenna, one feedline, one lightning protector and ancillary hardware.
Other cost reductions come from the system as a whole, such as reduced
management requirements. And above all, the potential for future applications that run over Ethernet and IP, such as video for remote surveillance.
1.2.5 Wireless LAN with Mixed Services
The ESS transceiver is an excellent solution for a long-range industrial
wireless LAN. It offers several advantages over commercial solutions—
primarily improved performance over extended distances. The rugged
construction of the radio and its extended temperature range make it an
ideal solution even in harsh locations. In extreme environments, a
simple NEMA enclosure is sufficient to house the unit.
The transceiver trades higher speed for longer range. Commercial
802.11a/b/g solutions are designed to provide service to relatively small
areas such as offices, warehouses and homes. They provide high data
rates but have limited range. The ESS transmits at a higher power level,
uses a different frequency band, has higher sensitivity, and a narrower
channel to concentrate the radio energy and reach farther distances. It is
designed for industrial operation from the ground up.
IP-based devices that may be used with the transceiver include a new
breed of more powerful Remote Terminal Units (RTUs) and Programmable Logic Controllers (PLCs). These, as well as other devices, may
be used in applications ranging from SCADA/telemetry monitoring,
web-based video, security monitoring, and voice over IP. Figure 1-6
shows a typical wireless IP network.
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Figure 1-6. Extended-Range LAN with Mixed Applications
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1.2.6 Upgrading Older Wireless Network with
Serial Interfaces
Millions of wireless data products have been sold in the last two decades
for licensed and license-free operation, many of them sold by SIMREX
Corporation. There are several ways that these systems can benefit from
incorporating ESS equipment. The chief advantages are interface flexibility (serial and Ethernet in one unit), and higher data throughput. By
taking advantage of its built-in serial and Ethernet interfaces, the transceiver is well suited to replace leased lines, dial-up lines, or existing
MAS 900 MHz data transceivers.
Replacing Legacy Wireless Products
In most cases, legacy radio transceivers supporting serial-interface
equipment can be replaced with ESS transceivers. Legacy equipment
can be connected to the transceiver through the COM1 or COM2 port with
a DB-25 to DB-9 cable wired for EIA-232 signaling. The COM2 port
supports all standard EIA-232 signaling and acts as a data-terminal
equipment device (DTE).
NOTE: Several previous SIMREX-brand products had non-standard
signal lines on their interface connectors (for example, to
control sleep functions and alarm lines). These special functions are not provided nor supported by the ESS transceiver.
Consult equipment manuals for complete pinout information.
Supplement legacy wireless network with IP services
The ESS Dual Gateway model can support up to two serial devices and
one Ethernet connection at the same time. The serial interfaces (COM1
and COM2) operate in two different modes: Connectionless UDP and
connection-orientated TCP.
In the UDP mode, the transceiver supports point-to-multipoint
serial-port to serial-port connectivity. In the TCP mode, it supports
point-to-point Ethernet/IP to serial port connectivity.
For further details on the transceiver’s Serial Gateway interface modes,
see “CONFIGURING THE SERIAL INTERFACES” on Page 61.
1.2.7 High-Speed Mobile Data
The ESS radios support high-speed data communications in a mobile
environment. Remote radios roam between different access points, providing seamless transitions and continuous coverage. For additional
information on configuring a mobile network, refer to Mobile Data Con-
figuration on Page 58.
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e
1.3 NETWORK DESIGN
CONSIDERATIONS
1.3.1 Extending Network Coverage with Repeaters
What is a Repeater System?
A repeater works by re-transmitting data from outlying remote sites to
the Access Point and vice-versa. It introduces some additional
end-to-end transmission delay but provides longer-range connectivity.
In some geographical areas, obstacles can make communications difficult. These obstacles are commonly large buildings, hills, or dense
foliage. These obstacles can often be overcome with a repeater station.
Option 1—Using two transceivers to form a repeater station
(back-to-back repeater)
Although the range between transceivers can be up to 40 km (25 miles)
over favorable terrain, it is possible to extend the range considerably by
connecting two units together at one site in a “back-to-back” fashion to
form a repeater, as shown in Figure 1-7. This arrangement should be
used whenever the objective is to utilize the maximum range between
stations. In this case, using high-gain Yagi antennas at each location will
provide more reliable communications than their counterparts—omnidirectional antennas.
Overview
Invisible place holder
REPEATER
Access
Point
POINT-TO-POINT LINK
Access Point
LAN/WAN
Remote
Ethernet
Crossover Cable
Remote
Figure 1-7. Typical LAN with a Repeater Link
LAN
Remot
LAN
Remote
LAN
Two transceivers may be connected “back-to-back” through the LAN
Ports to form a repeater station. (The cable must be a “cross-over”
Ethernet cable for this to work). This configuration is sometimes
required in a network that includes a distant Remote that would otherwise be unable to communicate directly with the Access Point station
due to distance or terrain.
The geographic location of a repeater station is especially important. A
site must be chosen that allows good communication with both the
Access Point and the outlying Remote site. This is often on top of a hill,
building, or other elevated terrain from which both sites can be “seen”
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by the repeater station antennas. A detailed discussion on the effects of
terrain is given in Section 5.1.2, Site Selection (beginning on Page 140).
The following paragraphs contain specific requirements for repeater
systems.
Antennas Two antennas are required at this type of repeater station—one for each
radio. Measures must be taken to minimize the chance of interference
between these antennas. One effective technique for limiting interference is to employ vertical separation. In this arrangement, assuming
both are vertically polarized, one antenna is mounted directly over the
other, separated by at least 10 feet (3 Meters). This takes advantage of
the minimal radiation exhibited by most antennas directly above and
below their driven elements.
Another interference reduction technique is to cross-polarize the
repeater antennas. If one antenna is mounted for polarization in the vertical plane, and the other in the horizontal plane, an additional 20 dB of
attenuation can be achieved. (Remember that the corresponding stations
should use the same antenna orientation when cross-polarization is
used.)
Network Name The two radios that are wired together at the repeater site must have dif-
ferent network names. To set or view the network names, see “STEP 3—
CONNECT PC TO THE TRANSCEIVER” on Page 22 for details.
Option 2—Using the AP as a Store-and-Forward Packet
Repeater
A wireless network can be extended through the use of an alternate
arrangement using the Access Point as a repeater to re-transmit the signals of all stations in the network. The repeater is a standard transceiver
configured as an Access Point, and operating in Store and Forward
mode. (See Figure 1-8.)
Invisible place holder
Remote
LAN/WAN
Remote
Access Point
REPEATER
Remote
Remote
LAN
LAN
LAN
Figure 1-8. Typical network with store-and-forward repeater
As with the conventional repeater described in Option 1 above, the location of a store and forward repeater is also important. A site must be
chosen that allows good communication with both the Access Point and
the outlying Remote site. This can be on the top of a hill, building, or
other elevated terrain from which all sites can be “seen” by the repeater
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station antenna. A detailed discussion on the effects of terrain is given
in Section 5.1.2, Site Selection (beginning on Page 140)
1.3.2 Protected Network Operation using Multiple
Access Points
Although SIMREX transceivers have a very robust design and have
undergone intensive testing before being shipped, it is possible for isolated failures to occur. In mission-critical applications, down time can
be virtually eliminated by using some, or all, of the following configurations:
In a point-to-multipoint scenario, the Access Point services multiple
remotes. A problem in the Access Point will have an effect on all
remotes, since none will have access to the network. When operation of
the network does not tolerate any down time, it is possible to set up a
protected configuration for the Access Point to greatly reduce the possibility of this occurrence.
Two or more Access Points can be configured with the same Network
Name and kept active simultaneously, each with its own independent
antenna. In this scenario, Remotes will associate with either one of the
available Access Points. In case of a failure of one of the AP’s the
Remotes will quickly associate with another of the remaining Access
Points re-establishing connectivity to the end devices.
The Access Points are unaware of the existence of the other AP’s.
Because the hopping algorithm uses both the Network Name and the
Wireless MAC address of the AP to generate the hopping pattern, multiple AP’s can coexist—even if they use the same network name. The
collocated AP’s will be using different hopping patterns and frequencies
the great majority of the time. Although some data collisions will occur,
the wireless-MAC is built to tolerate and recover from such occurrences
with minimal degradation.
1.3.3 Collocating Multiple Radio Networks
Many networks can operate in relatively close physical proximity to one
another provided reasonable measures are taken to assure the radio
signal of one Access Point is not directed at the antenna of the second
Access Point.
The Network Name and the association process
The Network Name is the foundation for building individual radio networks. It is part of a beacon signal broadcast by the Access Point (AP)
to any Remote units with the same Network Name. Remotes that join the
network are referred to as being “associated” with the Access Point unit.
Multiple APs with the same Network Name should be used with care.
Using the same Network Name in multiple APs may result in Remotes
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associating with undesired APs and preventing data exchange from
occurring as planned.
The use of a different Network Name does not guarantee an interference-free system. It does however, assure that only data destined for a
unique network is passed through to that network.
Co-Location for
Multiple Networks
It may be desirable to co-locate Access Points at one location to take
advantage of an excellent or premium location that can serve two independent networks. Each network should have unique Network Name
and each AP unit’s antenna should be provided as much vertical separation as is practical to minimize RFI.
NOTE: All transceivers are shipped with the Network Name set to
“Not Programmed.” The Network Name must be programmed
in order to pass data and begin normal operations.
Can radio frequency interference (RFI) disrupt my wireless
network?
When multiple radio networks operate in close physical proximity to
other wireless networks, individual units may not operate reliably under
weak signal conditions and may be influenced by strong radio signals in
adjacent bands. This radio frequency interference cannot be predicted
with certainty, and can only be determined by experimentation. If you
need to co-locate two units, start by using the largest possible vertical
antenna separation between the two AP antennas on the same support
structure. If that does not work, consult with your factory representative
about other techniques for controlling radio frequency interference
between the radios. (See “A Word About Radio Interference” on
Page 145 for more details.)
1.4 SIMREX CYBER SECURITY SUITE
Today the operation and management of an enterprise is becoming
increasing dependent on electronic information flow. An accompanying
concern becomes the cyber security of the communication infrastructure
and the security of the data itself.
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The transceiver is capable of dealing with many common security
issues. Table 1-3 profiles security risks and how the transceiver provides
a solution for minimizing vulnerability.
Table 1-3. Security Risk Management
Security Vulnerability SIMREX Cyber Security Solution
Unauthorized access to the backbone
network through a foreign remote radio
“Rogue” AP, where a foreign AP takes
control of some or all remote radios and
thus remote devices
Dictionary attacks, where a hacker runs a
program that sequentially tries to break a
password.
Denial of service, where Remote radios
could be reconfigured with bad
parameters bringing the network down.
Airsnort and other war-driving hackers in
parking lots, etc.
Eavesdropping, intercepting messages
• 802.1x RADIUS authentication
• Approved Remotes List (local)
Only those remotes included in the
AP list will associate
• 802.1x RADIUS authentication
• Approved AP List
A remote will only associate to those
AP included in its local authorized
list of AP
• Failed-login lockdown
After 3 tries, the transceiver ignores
login requests for 5 minutes. Critical
event reports (traps) are generated
as well.
•Remote login with SSH or HTTPS
•Local console login
•Disabled HTTP & Telnet to allow
only local management services
•900 MHz operation is not
interoperable with standard 802.11b
wireless cards
•The transceiver cannot be put in a
promiscuous mode
•Proprietary data framing
•AES-128 encryption (ESS-II)
•RC4-128 encryption (ESS)
Key cracking software
Replaying messages
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• Automatic Rotating Key algorithm
• Automatic Rotating Key algorithm
SIMREX Corporation
Table 1-3. Security Risk Management
Security Vulnerability SIMREX Cyber Security Solution
Unprotected access to configuration via
SNMPv1
Intrusion detection
•Implement SNMPv3 secure
operation
• Provides early warning via SNMP
through critical event reports
(unauthorized, logging attempts,
etc.)
• Unau thorized AP MAC address
detected at Remote
• Unauthorized Remote MAC
address detected at AP
• Log in attempt limit exceeded
(Accessed via: Telnet, HTTP, o r
local)
• Successfu l login/logout
(Accessed via: Telnet, HTTP, o r
local)
1.5 ACCESSORIES
The transceiver can be used with one or more of the accessories listed in
Table 1-4. Contact the factory for ordering details.
Table 1-4. Accessories
Accessory Description SIMREX Part
No.
AC Power
Adapter Kit
OmniDirectional
Antennas
Yagi Antenna
(Directional)
TNC Male-to-N
Female Adapter
TNC Male-to-N
Female Adapter
Cable
Ethernet RJ-45
Crossover
Cable (CAT5)
2-Pin Power
Plug
A small power supply module designed for
continuous service. UL approved. Input:
120/220; Output: 13.8 Vdc @ 2.5 A
Rugged antennas well suited for use at Access
Point installations. Consult with your factory
Sales Representative for details
Rugged antennas well suited for use at Remote
installations. Consult with your factory Sales
Representative for details.
One-piece RF adaptor plug. ESS-ADPT-
Short length of coaxial cable used to connect the
radio’s TNC antenna connector to a Type N
commonly used on large diameter coaxial
cables.
Cable assembly used to cross-connect the
Ethernet ports of two transceivers used in a
repeater configuration.
(Cable length ≈ 3 ft./1M)
Mates with power connector on transceiver.
Screw terminals provided for wires, threaded
locking screws to prevent accidental disconnect.
ESS-PWR-KIT
Call factory
Call factory
TNCM-NF
CAB.ESS-TNC36N (3FT./1M)
CAB.ESS-TNC72N (6FT./1.8M)
CAB.ESSRJ45X
ESS-CONN2P
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Table 1-4. Accessories (Continued)
Accessory Description SIMREX Part
No.
Ethernet RJ-45
Straight-thru
Cable (CAT5)
Cable assembly used to connect an Ethernet
device to the transceiver. Both ends of the cable
are wired identically.
(Cable length ≈ 3 ft./1M)
EIA-232
Shielded Data
Cable
Shielded cable terminated with a DB-25 male
connector on one end, and a DB-9 female on the
other end. Two lengths available (see part
numbers at right).
EIA-232
Shielded Data
Cable
Shielded cable terminated with a DB-9 male
connector on one end, and a DB-9 female on the
other end, 6 ft./1.8m long.
Fuse Small, board-mounted fuse used to protect
against over-current conditions.
Flat-Surface
Mounting
Brackets &
Brackets: 2″ x 3″ plates designed to be screwed
onto the bottom of the unit for surface-mounting
the radio.
Screws
Screws: 6-32/1/4″ with locking adhesive.
(Industry Standard MS 51957-26)
DIN Rail
Mounting
Bracket
COM2 Interface
Adapter
Bracket used to mount the transceiver to
standard 35 mm DIN rails commonly found in
equipment cabinets and panels.
DB-25(F) to DB-9(M) shielded cable assembly
(6 ft./1.8 m) for connection of equipment or other
EIA-232 serial devices previously connected to
“legacy” units. (Consult factory for other lengths
and variations.)
SIMREX
DataMover
NMS Software
PC-based network management system for
new-generation SIMREX transceivers. Allows
radio control and diagnostics in a hierarchal map
perspective.
Bandpass Filter Antenna system filter that helps eliminate
interference from nearby paging transmitters.
Ethernet Surge
Suppressor
Surge suppressor for protection of Ethernet port
against lightning.
CAB.ESSRJ45S
CAB.ESSDB25M-9F-6
(6 ft./1.8m)
CAB.ESS-
DB25M-9F-15
(15 ft./4.6m)
CAB.ESSDB9M-9F-6
ESS-FUSE-2A
ESS-MNTBRKT
MS6-32-ESS
ESS-DINBRKT
CAB.ESSDB25F-DB9M
ESSNETMGR
ESS-FLTRA2
ESS-SURGERJ
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18 DataMover ESS User’s Guide SIMREX MAN.ESS-01, Rev. F1
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TABLETOP EVALUATION
2
2 Chapter Counter Reset Paragraph
Contents
2.1 OVERVIEW .............................................................................21
2.2 STEP 1—INSTALL THE ANTENNA CABLING.......................21
2.3 STEP 2—MEASURE & CONNECT THE PRIMARY POWER. 22
2.4 STEP 3—CONNECT PC TO THE TRANSCEIVER................22
2.5 STEP 4—REVIEW TRANSCEIVER CONFIGURATION......... 23
AND TEST
2.5.1 Getting Started ......................................................................... 23
2.5.2 Procedure ................................................................................. 23
2.5.3 Basic Configuration Defaults ....................................................23
SETUP
2.6 STEP 5—CONNECT LAN AND/OR SERIAL EQUIPMENT.... 24
2.7 STEP 6—CHECK FOR NORMAL OPERATION.....................25
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)
Remote
2.1 OVERVIEW
It is best to set up a tabletop network that can be used to verify the basic
operation of the transceivers and give you a chance to experiment with
network designs, configurations or network equipment in a convenient
location. This test can be performed with any number of radios.
When you are satisfied that the network is functioning properly in a
bench setting, field installation can be performed. Complete information
for field installation, including mounting dimensions and antenna selection, is provided in INSTALLATION PLANNING on Page 138
For the following evaluation, one of the transceivers in the network must
be set to Access Point service (Device Mode = Access Point) for proper
operation.
NOTE: It is important to use a “Network Name” that is different from
any currently in use in your area during the testing period. This
will eliminate unnecessary disruption of traffic on the existing
network while you become familiar with the transceiver or
evaluate variations of unit operating parameters.
To simulate data traffic over the radio network, connect a PC or LAN to
the Ethernet port of the Access Point and PING each transceiver several
times.
2.2 STEP 1—INSTALL THE ANTENNA
CABLING
Figure 2-1 is a drawing of the tabletop arrangement. Connect the
antenna ports of each transceiver as shown. This will provide stable
radio communications between each unit while preventing interference
to nearby electronic equipment from a large number of co-located units.
Invisible place holder
POWER ATTENUATORS
• Fixed or adjustable
• 1W Minimum Rating
Access Point
Remote
LAN
COM1
Remote
COM2
PWR
LINK
LAN
COM1
COM2
PWR
LINK
NON-RADIATING ATTENUATORS
COMPUTER
POWER DIVIDER
• Install on unused divider ports (if any
• 1W Minimum Rating
Figure 2-1. Typical setup for tabletop-testing of radios
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NOTE: It is very important to use attenuation between all units in the
test setup. The amount of attenuation required will depend on
the number of units being tested and the desired signal strength
(RSSI) at each transceiver during the test. In no case should a
signal greater than –50 dBm be applied to any transceiver in
the test setup. An RF power output level of +20 dBm is recommended. (See “Radio Configuration Menu” on Page 51.)
2.3 STEP 2—MEASURE & CONNECT
THE PRIMARY POWER
The primary power at the transceiver’s power connector must be within
10–30 Vdc and be capable of continuously providing a minimum of 8
Watts (typical power consumptions are: 760 mA @ 10.5 Vdc, 580 mA
@ 13.8 Vdc, and 267 mA @ 30 Vdc).
A power connector with screw-terminals is provided with each unit.
Strip the wire leads to 6 mm (0.25"). Be sure to observe proper polarity
as shown in Figure 2-2 with the positive lead (+) on the left.
NOTE: It will take about 30 seconds for the transceiver to power up
and be ready for operation.
Invisible place holder
Lead
Binding
Screws (2)
Wire Ports
Figure 2-2. Power Connector, Polarity: Left +, Right –
CAUTION
POSSIBLE
EQUIPMENT
DAMAGE
The transceiver must only be used with negative-ground systems. Make sure the polarity of the
power source is correct. The unit is protected from
reverse polarity by an internal diode and fuse.
2.4 STEP 3—CONNECT PC TO THE
TRANSCEIVER
Connect a PC’s Ethernet port to the LAN port using an Ethernet crossover cable. The
cable to connect to the COM1 port. (Figure 2-3 on Page 25)
22 DataMover ESS User’s Guide SIMREX MAN.ESS-01, Rev. F1
LAN LED should light. Alternately, you can use a serial
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