Eaton 455U-D User manual

ELPRO Technologies Pty Ltd, 9/12 Billabong Street, Stafford Q 4053, Australia.
Tel: [phone] Fax: [phone]
Email: [email protected] Web: www.eaton.com/wireless
User Manual
455U-D
Radio Modem

Contents
Man_455U-D Rev 3.07 Page 3
Thank you for your selection of the 455U-D radio modem. We trust it will give
you many years of valuable service.
ATTENTION!
Incorrect termination of supply wires may
cause internal damage and will void warranty.
To ensure your 455U-D enjoys a long life,
double check ALL your connections with
the user’s manual
before turning the power on.
Important Regulatory Information
FCC
Part 15 –This device has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part15 of the FCC rules (Code of Federal
Regulations 47CFR Part 15). Operation is subject to the condition that this
device does not cause harmful interference.
Part 90 –This device has been type accepted for operation by the FCC in accordance
with Part90 of the FCC rules (47CFR Part 90). See the label on the unit for
the specific FCC ID and any other certification designations.
Note This device should only be connected to PCs that are covered by either a
FCC DoC or are FCC certified.
Industry Canada
RSS-119 - This device has been type accepted for operation by Industry Canada in
accordance with RSS-119 of the Industry Canada rules. See the label on the
unit for the specific Industry Canada certification number and any other
certification designations.
Notice
Any changes or modifications not expressly approved by ELPRO
Technologies P/L could void the user’s authority to operate this equipment.
To operate this equipment legally the user must obtain a radio operating
license from the government agency. This is done so the government can
coordinate radio users in order to minimize interference.

455U-D Radio Modem User Manual
Page 4 © Jan 2016
How to Use This Manual
To receive the maximum benefit from your 455U-D product, please read the
Introduction, Installation and Configuration chapters of this manual
thoroughly before putting the 455U-D to work.
Chapter Four Specifications details the features of the product and lists the
standards to which the product is approved.
Chapter Five Troubleshooting will help if your system has problems and
Chapter Seven specifies the Warranty and Service conditions.
The foldout sheet 455U-D Installation Guide is an installation drawing
appropriate for most applications.
WARNING
1. To avoid the risk of electrocution, the antenna, antenna cable, and all
terminals of the 455U-D module should be electrically protected. To
provide maximum surge and lightning protection, the module should be
connected to a suitable earth and the antenna, antenna cable, and the
module should be installed as recommended in the Installation Guide.
2. To avoid accidents during maintenance or adjustment of remotely
controlled equipment, all equipment should be first disconnected from the
455U-D module during these adjustments. Equipment should carry clear
markings to indicate remote or automatic operation. eg. "This equipment
is remotely controlled and may start without warning. Isolate at the
switchboard before attempting adjustments."
3. The 455U-D module is not suitable for use in explosive environments
without additional protection.
4. All antenna installation and servicing should be done by qualified
personal only. When installing or working near the antenna it is
important to ensure that the transmitter is not operating, ensure the
transmitter is disabled.
5. The antenna can have very high RF radiating fields and must be installed
so that under normal operating conditions that a person cannot approach
within 2.3 metres (7.5 feet) of the antenna. See chapter 2 for antenna
installation guidelines.

Contents
Man_455U-D Rev 3.07 Page 5
CONTENTS
WARNING............................................................................................................................... 4
CHAPTER ONE INTRODUCTION ..................................................................... 8
1.1 GENERAL................................................................................................................. 8
1.1.1 Basic Operation ......................................................................................................... 9
1.1.2 Operating Modes ....................................................................................................... 9
1.1.3 Repeater Functionality............................................................................................. 10
1.1.4 Hot Redundant Standby........................................................................................... 10
1.2 UNACKNOWLEDGED MODE.................................................................................... 10
1.3 ACKNOWLEDGED MODE........................................................................................ 11
1.4 SECURITY ENCRYPTION ......................................................................................... 14
1.5 SERIAL AND RADIO DATA...................................................................................... 14
1.5.1 PLC-Mode............................................................................................................... 15
1.5.2 Character Type......................................................................................................... 15
1.5.3 Serial Data Rate....................................................................................................... 16
1.5.4 Radio Data Rate....................................................................................................... 16
1.5.5 Radio Message......................................................................................................... 16
1.6 ADDRESSING.......................................................................................................... 17
1.6.1 Multiple Device Connectivity (MDC)..................................................................... 18
1.7 OPTIMUM PATH ROUTING...................................................................................... 18
1.8 DUTY CYCLE LIMITING.......................................................................................... 19
1.9 WHAT OPERATING MODE TO USE ?....................................................................... 19
1.9.1 Unacknowledged or Acknowledged mode?............................................................ 19
1.9.2 Error Check ?........................................................................................................... 20
CHAPTER TWO INSTALLATION .................................................................. 21
2.1 GENERAL............................................................................................................... 21
2.2 ANTENNA INSTALLATION....................................................................................... 21
2.2.1 3dB/6dB Collinear antenna. .................................................................................... 23
2.2.2 Yagi antennas. ......................................................................................................... 24
2.3 POWER SUPPLY...................................................................................................... 24
2.4 SERIAL CONNECTIONS ........................................................................................... 26
2.4.1 RS232 Serial Port ................................................................................................ 26
2.4.2 RS232 Configuration Port................................................................................... 27
2.4.3 RS485 Serial Port ................................................................................................ 27
2.5 DISCRETE I/O POINT.............................................................................................. 28
2.5.1 Using the Discrete I/O as an Output.................................................................... 28
2.5.2 Using the Discrete I/O point as an Input.............................................................. 28
CHAPTER THREE CONFIGURATION........................................................................ 29

455U-D Radio Modem User Manual
Page 6 © Jan 2016
3.1 BEFORE CONFIGURING........................................................................................... 29
3.1.1 Addressing............................................................................................................... 29
3.1.2 Command Mode...................................................................................................... 30
3.2 DEFAULT CONFIGURATION .................................................................................... 30
3.3 CONFIGURATION PROGRAM................................................................................... 30
3.3.1 Reading and Configuring a module......................................................................... 31
3.3.2 Saving and Opening a configuration file............................................................. 32
3.3.3 Modifying an existing configuration ................................................................... 32
3.3.4 Serial Communications terminal......................................................................... 33
3.3.5 Reset and Advanced mode .................................................................................. 33
3.5 UNACKNOWLEDGED MODE.................................................................................... 35
3.5.1 RS-485 Port ............................................................................................................. 35
3.5.2 RS-232 Port ............................................................................................................. 36
3.5.3 Unacknowledged mode Repeaters....................................................................... 37
3.5.4 Broadcast Network .............................................................................................. 38
3.5.5 Addressed Network ............................................................................................. 39
3.5.6 Multiple Transmissions ....................................................................................... 40
3.6 RADIO AND SERIAL CONFIGURATION..................................................................... 40
3.6.1 Radio Data Rate....................................................................................................... 40
3.6.2 Serial Port Settings .................................................................................................. 40
3.6.3 Other Settings .......................................................................................................... 41
3.7 ACKNOWLEDGED MODE........................................................................................ 42
3.7.1 Auto Dial (Auto-Connect Master)....................................................................... 42
3.7.2 Auto Answer (Auto-Connect Slave).................................................................... 44
3.7.3 Single-Connect Acknowledged mode ................................................................. 44
3.8 DUAL REDUNDANCY ............................................................................................. 45
3.8.1 Single Host Device.............................................................................................. 46
3.8.2 Redundant Host Pair............................................................................................ 46
3.8.3 Dual Redundanct Control Connection................................................................. 47
3.8.4 Dual Redundant Indications ................................................................................ 48
3.8.5 Firmware versions prior to 3.03 .......................................................................... 50
3.9 LOW POWER MODE ............................................................................................... 51
3.10 OPTIMUM PATH ROUTING...................................................................................... 52
3.10.1 Path Configuration............................................................................................... 52
3.10.2 Configuring for Modbus Protocol (RTU or ASCII)............................................ 53
3.10.3 Modbus RTU Protocol ........................................................................................ 54
3.10.4 Modbus ASCII protocol ...................................................................................... 54
3.10.5 DF1 protocol........................................................................................................ 54
3.10.6 DNP3................................................................................................................... 54
3.11 ADVANCED SETTINGS -SREGISTERS..................................................................... 54
3.12 HAYES AT COMMANDS......................................................................................... 54
3.13 AT CONFIGURATION EXAMPLES............................................................................ 55

Contents
Man_455U-D Rev 3.07 Page 7
3.13.1 Data Logger Network with Central Computer .................................................... 55
3.13.2 Unacknowledged mode with broadcast messages and repeaters......................... 56
3.14 SWITCH CONFIGURATION....................................................................................... 57
CHAPTER FOUR TROUBLESHOOTING .................................................................... 58
4.1 POWER-UP AND NORMAL OPERATION ................................................................... 58
4.2 LED INDICATION DIAGNOSTICS CHART................................................................. 59
4.3 OPERATING PROBLEMS.......................................................................................... 60
4.4 TEST FUNCTIONS ................................................................................................... 61
4.4.1 Bit Error Ratio Test (BER)...................................................................................... 61
4.4.2 Other Radio Testing - AT&Tx ................................................................................ 62
4.4.3 On-line diagnostics.................................................................................................. 63
4.5 RADIO PATH TESTING............................................................................................ 65
4.6 CHANGING THE RADIO PARAMETERS..................................................................... 66
4.7 DIAGNOSTIC MESSAGES ........................................................................................ 67
CHAPTER FIVE SPECIFICATIONS ............................................................................. 68
CHAPTER SIX WARRANTY & SERVICE ................................................................... 71
APPENDIX A HAYES COMMANDS............................................................................. 72
APPENDIX B RESPONSE CODES ................................................................................ 81
APPENDIX C S-REGISTERS.......................................................................................... 82

455U-D Radio Modem User Manual
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Chapter One INTRODUCTION
1.1 General
The 455U-D radio modem provides reliable radio modem operation with advanced
communication control and diagnostics functions. Radio modems transmit serial data over a
long distance via radio. The serial data is not changed - the output data is the same as the
input data. Although the 455U-D is intended to be simple in its application, it also provides
many sophisticated features. This manual should be read carefully to ensure that the modules
are configured and installed to give reliable performance.
Each 455U-D module will connect to a host device by RS232 or RS485 serial connection.
Examples of host devices are PLC’s, data loggers, intelligent transducers and computers. The
455U-D unit can receive data from the host device and transmit this data by radio to another
(or several) 455U-D module. The other module will recreate the serial data and output it as
either a RS232 or RS485 serial signal. The 455U-D unit provides two-way communications -
each module can accept serial data and also output serial data.
The 455U-D module has two data ports (one RS232 and one RS485) and can connect to two
host devices independently. The 455U-D also has another RS232 port (via a RJ45 connector)
which can be used only for configuration or access to diagnostics information - the RS232 data
port can also be used for configuration and diagnostics.
RS232 is an electrical standard format for a full duplex point-to-point serial connection.
RS485 is an electrical standard format for a half-duplex multidrop serial connection. Up
to 32 devices can communicate on a common RS485 serial bus.
Each 455U-D can simultaneously
connect to signals from both RS232 and
RS485. In addition, RS232 data from
one host device can be transmitted to a
remote 455U-D unit and output as
RS485 data to another host device.
The unit includes a fixed frequency
radio transceiver. A range of models
support operation in the following
bands: 58 to 72MHz; 148 to 174MHz;
220 to 235 MHz; and seven 20MHz radio bands in the range of 360 to 512MHz. The user can
configure the frequency within the radio band (refer to Diagnostics section).
The 455U-D is available with a high power radio (0.5 –5W) suitable for licensed narrow-
width channels (12.5, 20 or 25KHz). The models operating in the 360 to 512MHz range are
also available with a lower power radio (10 –500mW) suitable for license-free narrow-width
channels, in countries where these are available.
The operating parameters of the 455U-D are configured from a PC using a Microsoft
Windows configuration package provided free with the module, or from a PC terminal using
Hayes commands.
RS232
RS232
RS485
RS485
MULTIPLE DEVICE CONNECTIVITY

Chapter One Introduction
Man_455U-D Rev 3.07 Page 9
Ordering Information
455U - Type –Radio Type –RF Power –Channel –Band –Frequency
Type D Data modem, full functionality
B Data modem, Bell 202 or V23 messaging
A External modem, 600 ohm audio input
CData modem compatible with ELPRO 405U *only 400MHz models
Radio Type L10 –500mW H0.5 –5W
Power Actual power requested - for example, 100mW or 2W
Channel N 12.5 KHz W 20/25 KHz
Band 60 58 –72MHz 150 148 –174 MHz
220 220 –235 Mhz (note: 220 model is wide band only)
390 380 –400 MHz 410 400 –420 MHz
430 420 –440 MHz 440 430 –450 MHz
460 450 –470 MHz 480 470 –490 MHz
500 490 –512 MHz
Frequency Actual frequency requested in MHz - for example, 471.0725
For different transmit and receive frequencies, enter Rxxxxx/Txxxxxx,
for example, R460.5000/T472.3000
1.1.1 Basic Operation
The operation of the 455U-D radio modem is relatively simple. As data is received at the
serial port, the data is transmitted on the radio channel. Up to 1020 bytes of data can be
transmitted in one transmission. The radio transmission commences when the first data byte is
received, and ends when there are no more data bytes in the input buffer, or when the number
of bytes transmitted equals the maximum message length (user configurable - default 1020
bytes). If more than 1020 bytes is input, the 455U-D unit will transmit the first 1020 bytes,
then the next 1020 bytes, and so on until all of the data has been transmitted.
Because the radio data rate could be less than the input serial data rate, an input memory
buffer of up to 8Kbytes is provided. The RS232 connection provides CTS control to prevent
the buffer overflowing. There are no data flow control signals for RS485.
1.1.2 Operating Modes
A radio channel cannot provide as secure a data channel as a wired connection. The 455U-D
uses a radio band with a low level of natural or industrial noise, however there is a chance of
interference from other users on the radio channel. We recommend that the flow of data over
the radio channel is controlled by using error detection and “handshaking” - that is, returning
an acknowledgment transmission if a data packet is received on the radio channel without
error. This function can be performed by either the host devices or the 455U-D modules.
The modules may be configured by the user to operate in one of two modes. In
Unacknowledged mode, it is assumed that the host devices control the flow of data - the
455U-D does not provide handshaking. In Acknowledged mode, the 455U-D units provide
handshaking to control the flow of data.
The RS485 port always operates in Unacknowledged mode.

455U-D Radio Modem User Manual
Page 10 © Jan 2016
1.1.3 Repeater Functionality
A 455U-D unit can act as a repeater for other units. A repeater receives a radio message from
one unit and re-transmits it on to another unit.
Up to seven repeater addresses can be configured in a radio link.
If transmitting to the wildcard 0 address in Unacknowledged mode (that is, a broadcast
transmission), then the repeater unit can be configured to also output the data to its own host
device.
1.1.4 Hot Redundant Standby
Two 455U-D units can be installed together in a Dual Redundant relationship - an active unit
with a hot redundant standby. One unit is configured as a “primary” unit and the other the
“secondary”. The secondary unit acts as a standby for the primary.
Under normal operation, the primary unit is active and the standby is inactive. If the internal
diagnostics in the primary detects a fault or an operating problem, the primary stops normal
operation and the secondary becomes active. The inactive unit is powered and operational,
however communications out of the unit via the radio transmitter and RS485 port is disabled.
Both units have the same configuration apart from primary/secondary selection.
1.2 Unacknowledged Mode
The default configuration of the 455U-D modem is unacknowledged mode - the modules are
set in this mode at the factory.
In unacknowledged mode,
units do not provide
handshaking functions to
control the flow of data.
Messages are not
acknowledged, and are sent
on a “Best attempt” basis. It
is up to the host equipment
to determine if data is lost or
corrupted.
To improve reliability in this mode, units may be configured to send each message multiple
times (configured in S-Register S29). The receiving unit will detect repeat messages and only
send the data out the serial port once.
Each modem is configured with a separate unit address. In Unacknowledged mode, messages
may be sent
to a particular modem by using the remote unit’s address, or
UNACKNOWLEDGED MODE
ADDRESSED TO A PARTICULAR
UNIT
DATA
DATA
NO
DATA

Chapter One Introduction
Man_455U-D Rev 3.07 Page 11
UNACKNOWLEDGED MODE
ADDRESSED TO ALL UNITS USING
WILDCARD ADDRESS 0
DATA
DATA
DATA
DATA
to all modems in the system, as a broadcast message by using the wildcard address 0. The
wildcard address is used to send a message to a group of modems.
Data received at the serial port is transmitted out of the radio port, addressed to the configured
destination 455U-D module, or to all modules by using address 0. Data received from the
radio with the correct addressing is transmitted out of one of the serial ports (RS232 or
RS485).
Prior to transmitting, units will listen to the radio channel to
ensure that it is clear - units will hold off from
transmitting until the radio channel is clear.
At the RS232 port, the CTS pin
can be configured to go high while
there is space in the input data
buffer - otherwise it is always high.
Host devices should provide a
suitable protocol to ensure that
error checking, handshaking and implementation of an
appropriate re-transmission scheme is provided. This mode of operation is particularly suited
to devices designed to operate over a multidrop network, such as PLC systems designed for
operation over a RS-485 network.
If error checking is not configured at the receiving unit, data will start to be output
immediately after the first byte of data has been received. If error checking is configured, data
will be output approx 1mSec after the end of the message. For example, a message with 20
bytes of data transmitted at 19200 bits/sec will begin to be output approx 23 msec after the
data is input, if there is no error checking, or 31 msec after the data is input if error checking is
configured - this assumes the minimum lead-in time of 20 msec is configured.
1.3 Acknowledged Mode
In Acknowledged mode, data is
transferred between the RS-232
ports of two modules (that is, a
point to point link). One of the
modules is configured as a
“master” (or initiator) unit and the
other as a “slave” (or responder)
unit. There can be many slave
units in the system; however the
master unit will only link to one
slave at any one time.
Note that Acknowledged mode only applies to the RS-232 port. The RS-485 port always
operates in Unacknowledged mode.
ACKNOWLEDGED MODE
DATA
DATA
NO
DATA
DATA MESSAGE
ACK