Omron RFID Business Development Department V740-BA50CX4 Radio Identification System User Manual users manual

Omron Corporation, RFID Business Development Department Radio Identification System users manual

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Document ID577901
Application IDLnbMEHG8D3SBmuff/7aMHQ==
Document Descriptionusers manual
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Document TypeUser Manual
Display FormatAdobe Acrobat PDF - pdf
Filesize235kB (2937453 bits)
Date Submitted2005-09-02 00:00:00
Date Available2005-09-02 00:00:00
Creation Date2005-08-22 16:39:24
Producing SoftwareAcrobat Distiller 5.0.5 (Windows)
Document Lastmod2005-08-22 16:42:32
Document TitleSensorID Agile Reader 2 Installation and Service Guide 8200-0222-08
Document CreatorAcrobat PDFMaker 5.0 for Word
Document Author: Brad Kreider

Table of Contents
1. Installation and Usage Guide ........................................................................................ 3
1.1 Before You Begin................................................................................................................................... 4
1.1.1 Installation Requirements............................................................................................................. 4
1.1.2 Performance Considerations........................................................................................................ 4
1.2 Authorized Antennas ............................................................................................................................. 5
1.2.1 Antennas ...................................................................................................................................... 5
1.2.2 Antenna Cables(Options)............................................................................................................. 5
1.2.3 Setting the Reader RF Power ...................................................................................................... 5
1.3 Reader Installation................................................................................................................................. 6
1.3.1 Install the Reader ......................................................................................................................... 6
1.3.2 Install the Antennas...................................................................................................................... 6
1.3.3 Connect the Reader ..................................................................................................................... 6
1.4 Reader Configuration............................................................................................................................. 9
1.5 Reader Service .................................................................................................................................... 10
1.5.1 Using the Browser-Based Interface ........................................................................................... 10
1.5.2 Restarting the Reader ................................................................................................................ 18
1.5.3 Using Safe Mode........................................................................................................................ 18
1.6 Tag Fundamentals ............................................................................................................................... 20
1.7 Specifications....................................................................................................................................... 21
2. Query Protocol ............................................................................................................. 22
2.1 Transport Protocol ............................................................................................................................... 22
2.1.1 TCP Connection Setup and Teardown ...................................................................................... 22
2.2 Event/Query Protocol........................................................................................................................... 23
2.2.1 Client Software Requests/Functionality ..................................................................................... 23
2.2.2 General Observations, Commands, and Syntax........................................................................ 24
2.2.3 Extended RQL Command Structure supported by the V740 Reader ........................................ 24
2.2.4 Detailed Command Structure..................................................................................................... 25
2.2.4.1 ID Read ................................................................................................................................... 25
2.2.4.2 ID Write ................................................................................................................................... 29
2.2.4.3 Reader Control ........................................................................................................................ 31
2.2.4.4 Get Information........................................................................................................................ 35
2.2.5 Errors.......................................................................................................................................... 36
2.2.6 Protocol Specific Functionality and Parameter Settings ............................................................ 39
2.2.6.1 915 MHz EPC Class 1/1B ....................................................................................................... 39
2.2.6.2 915 MHz EPC Class 0 ............................................................................................................ 40
2.3 Examples ............................................................................................................................................. 41
2.3.1 Example 1 .................................................................................................................................. 41
2.3.2 Example 2 .................................................................................................................................. 41
2.3.3 Example 3 .................................................................................................................................. 41
3 Characteristics(Reference) .......................................................................................... 42
3.1 Communications Range ...................................................................................................................... 42
3.2 Communications Time ......................................................................................................................... 43
APPENDIX : OUTLINE DRAWINGS................................................................................. 44
Reader : ( V740-BA50C02-US)........................................................................................................... 44
Antenna : ( V740-HS02C) ............................................ エラー! ブックマークが定義されていません。
Antenna Cable:.................................................................................................................................... 44
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V740 Series RFID system
FCC WARNING
Changes or modifications not expressly approved
by the party responsible for compliance could void
the user’s authority to operate the equipment.
Reader/Writer
Antenna
NOTICE
This equipment has been tested and found to
comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference when the equipment is
operated in a commercial environment.
This equipment generates, uses and can radiate
radio frequency energy and, if not installed and
used in accordance with the instructions, may
cause harmful interference to radio
communications. Operation of this equipment in a
residential area is likely to cause harmful
interference in which case the user will be required
to correct the interference at his own expense.
Operation Manual
V740-BA50C04-US
V740-BA50C24-US
V740-HS01L
V740-HS01C
Mono-static
Reader/Writer(4ports)
Mono-static
Reader/Writer(8ports)
Mono-static Antenna
Mono-static Antenna
Properly shielded a grounded cables and
connectors must be used for connection to host
computer and / or peripherals in order to meet FCC
emission limits.
（AC adaptor） with ferrite core must be used for
RF interference suppression.
The OMRON V740 RFID Reader ( herein after
denoted as the V740 Reader) uses RFID (radio
frequency identification) technology to read data
stored on RFID tags. The V740 reader operates
analogous to an SQL (structured query language)
server, providing tag data in response to requests
from another application. A separate software
application may be used to direct its operation and
provide a user interface.
The reader supports UHF (ultra high frequency)
antennas, which are available separately. The
reader supports multiple configurations of UHF
antenna ports and transfers data to a remote
computer over a network connection.
The V740 Reader is powered by ThingMagic LLC
Mercury4® technologies.
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1. Installation and
Usage Guide
About this Guide
This installation and usage guide explains how to
install the V740 Reader, how to use the browserbased interface, and how to control the reader
remotely.
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1.1.2 Performance Considerations
1.1 Before You Begin
Reader performance may be affected by external
factors including tag variables and environment.
1.1.1 Installation Requirements
•
The reader is shipped with a certified limited
power source with a cable length of 1.8m (6ft).
Performance tests conducted under typical
operating conditions at your site are recommended
to help you optimize system performance.
•
Use only authorized antennas and cables to
maintain FCC approval (see page 4).
Tag Variables
•
In order to comply with FCC requirements for
RF exposure safety, a separation distance of
at least 23 cm (9.1 in) needs to be maintained
between the radiating elements of the antenna
and the bodies of nearby persons.
There are several variables associated with tags
that can affect reader performance:
•
Application surface — Some materials interfere
with tag performance including metal and
moisture. Tags applied to items made from or
containing these materials may not perform as
expected.
•
Provide strain relief for all reader connections.
•
The minimum screw size for mounting the
reader is #12 (M5). Use suitable wall anchors
when mounting to drywall or masonry.
•
•
A Shielded Ethernet cable must be used to
communicate with other devices.
Tag orientation — Reader performance is
affected by the orientation of the tag in the
antenna field.
•
•
Multiple readers and antennas can be used in
combination to enhance detection at specific
locations provided the software application is
able to synchronize antenna operation.
Tag model — many tag models are available.
Each model has its own performance
characteristics(refer to Chapter 3).
•
Environment
Reader performance may be affected by the
following:
Recommended minimum configuration for a
computer running an application that interfaces
with the V740 Reader:
–
–
–
–
•
Pentium® 400 MHz processor
128MB memory
10 GB hard disk drive
Base-T-10/100 Ethernet® port
Metal surfaces such as desks, filing cabinets,
bookshelves, and wastebaskets may enhance
or degrade reader performance.
Mount antennas as far as possible from metal
surfaces that are adversely affecting system
performance.
•
Devices that operate at 900 MHz, such as
cordless phones and wireless LANs, can
interfere with reader performance.
These devices may degrade performance of
the reader. The reader may also adversely
affect performance of 900 MHz devices.
•
Antennas operating in close proximity may
interfere with one another, thus degrading
reader performance.
•
Interference from other antennas may be
eliminated or reduced by using either one or
both of the following strategies:
– Affected antennas may be synchronized by a
separate user application using a timemultiplexing strategy.
– Antenna power can be reduced by reconfiguring
the RF Transmit Power setting for the reader.
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1.2.3 Setting the Reader RF Power
1.2 Authorized Antennas
The antenna authorized by the FCC for use with the
V740 Reader is described below.
IMPORTANT: No other antennas may be used with
the V740 Reader without violating FCC regulations. It
is the responsibility of the user to comply with this
requirement.
1.2.1 Antennas
OMRON Mono-static Antenna(Options)
During initial installation, the reader must be properly
configured to use the correct RF power to comply with
FCC regulations. DO NOT increase the power beyond
the recommended power setting as calculated below.
The maximum RF power is determined from antenna
gain and antenna cable loss using the formula:
Pmax = 36 dBm - Antenna Gain + Cable Loss
For example, if the antenna has a maximum gain of 6
dBi, and the cable has a minimum loss of 1.5 dB, the
maximum RF power that may be set is (36- 6 + 1.5) =
31.5 dBm.
Model: V740-HS01L，V740-HS01C
Gain: 6 dBi max.
Connector: N
Cable length : 0.3m(0.98’)
The Reader RF Power is set through the Settings
Page as described on Page 14.
1.2.2 Antenna Cables(Options)
Recommended Power Settings
Note that in no case may the power be set higher than
32.5 dBm.
The only cables authorized by the FCC for use with
the V740 Reader are listed below:
Antenna Type
Short Cable/Long Cable
V740-HS01L
Short cable
V740-HS01C
Model: V740-A01-3.0M
Length: 3.0m(9.8')
Insertion Loss: 1.5 dB min.
Cable Type: 3D-2V
Connector: Reverse TNC to Type N
Cable Diameter : 5.5mm(0.22’’)
31.5 dBm
Long cable
Model: V740-A01-10M
Length: 10m(32.8')
Insertion Loss: 1.5 dB min.
Cable Type:5D-SFA
Connector: Reverse TNC to Type N
Cable Diameter : 7.6mm(0.30’’)
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Mechanical Loading - Mounting of the equipment in
the rack should be such that a hazardous condition is
not achieved due to uneven mechanical loading.
1.3 Reader Installation
The following parts are provided with the reader:
Part
Qty.
Part Number
V740-Reader/Writer
V740-BA50C04-US or
V740-BA50C24-US
Power Supply
1.3.2 Install the Antennas
IMPORTANT: Be sure the user reads the section on
Declarations to maintain compliance with FCC
regulations. The Reader and the antennas are to be
installed only by professionals at specific locations For
human safety maintain a 23 cm (9.1in) distance from
the antennas .
1.3.1 Install the Reader
The antennas can be mounted directly to a variety of
surfaces. Mounting surfaces should be flat to fix the
antenna securely.
To mount the reader on a wall :
1. Hold the antenna in its mounting location and
mark the position of the mounting screws with
minimum (4) points. The antenna has several
mounting holes for each side. Choose 4 of those
with diagonal position according to the mounting
location.
You can place the reader on a shelf or mount it to a
wall. Mounting shelf and wall should be flat to fix the
reader securely.
To mount the reader on a wall:
1. Hold the reader in its two mounting location and
mark the position of the mounting screws
2. Drill holes for the screws and install wall anchors if
required.
3. Insert the M4x20 screws with spring washers and
flat washers and tighten until almost flush with the
wall.
4. Tighten the screws securely.
Note: For best performance, mount the antenna in
the horizontal orientation as pictured above.
1.3.3 Connect the Reader
Mounting
holes
2. Drill holes for the screws and install wall anchors if
required. Be sure anchors must have enough
A = RJ-45 Ethernet port
strength to fixed the reader against vibration.
B = Safe Mode button
3. Insert the M5x16 screws with spring washers and
C = RS232C
flat washers and tighten until almost flush with the
D = GPIO
wall.
E = DC power input
4. Slip the reader over the screws and slide down to
lock the screws in the keyhole openings.
10/100Base-T
(Reserved for future use)
5. Tighten the screws securely.
6. Fix the AC adaptor so that not to move by
vibration and tense DC plug cables. Do not bundle
the adaptor cable with other signal or power lines.
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One to four OMRON Bi-static antennas(V740-HS02C)
can be connected to the reader, depending on the
application requirements. The upper row silk-screen
markings on the reader identifies the port number and
antenna connections.
Antenna Connections : V740-BA50C24-US
Antenna x4
(V740-HS01L，V740-HS01C)
Note: Lower row of silk-screen marking on the reader
is reserved for future use.
Antenna Cable x8
(V740-A01)
Note: When two antenna configuration, there are
possibility to read the tag by not activated antenna
when the tag is located proximately (within 20cm).
1. Connect required UHF antennas to the antenna
ports on the reader .
IMPORTANT: Connect antennas to the antenna
ports before applying power to the reader. Any
antenna port not having an antenna connected to
it will be disabled when the reader is powered on.
2. Verify that all antennas are securely connected.
3. Connect the reader to the network by plugging a
Shielded Ethernet cable into the Ethernet port.
or
Connect the reader to a PC (personal computer)
by plugging a crossover Shielded Ethernet cable
into the Ethernet port.
Antenna Connection : V740-BA50C04-US
Antenna x2
(V740-HS01L，V740-HS01C)
Note: If DHCP is to be used, then the network
and server must be connected before powering
up the reader. If a DHCP server is not found the
reader will fall back to the IP address:
“10.0.0.101”.
Note: If NTP is to be used, then the network must
be connected and the server must be available
before powering up the reader. If a NTP server is
not found. The reader will not set the current time.
Antenna Cable x4
(V740-A01)
4. Plug the power adapter provided with the reader
into the DC power input connector. Then connect
the power cord to a power outlet.
While the reader is powering up, one green light
will be on. After the reader finishes its power-on
self-test, approximately 45 seconds, the green
light will pulse. The reader is now ready for
operation.
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LED Indicators
Name
Meaning
POWER
Lights while booting.
Blinks when the reader is running.
Lights when communicating with tags
via MODULE A(Antenna port 1 and 2)
Lights when communicating with tags
via MODULE B(Antenna port 3 and 4)
MODULE A
MODULE B
FAULT/ERROR
Lights when system error occurs.
STATUS
Reserved for Future Use
ACTIVITY
Reserved for Future Use
IMPORTANT: DO NOT disconnect power during
startup. Disconnecting power while booting the V740
reader may result in improper startup.
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1.4 Reader Configuration
In some cases, the application software may provide
support for reader configuration. If so, follow the
instructions provided with the application.
The following procedure describes how to configure
the reader directly from a network PC using the
browser-based interface.
The reader is shipped to use DHCP by default but will
fall back to the following static network configuration if
it does not get a DHCP lease:
IP Address:
Subnet Mask:
Gateway:
10.0.0.101
255.255.255.0
10.0.0.1
6. If you wish to use DHCP, modify the “Use
DHCP?” setting by selecting the “Yes” radio
button; otherwise, enter the required network
settings in the IP Address, Subnet Mask, and
Gateway fields. The fields will turn red if the
gateway is not on the same subnet as the IP
address. Then, click the [Save Changes] button.
IMPORTANT: Do not disconnect power until the
save process is completed.
7. Set the reader RF power per instructions on page
5 to correspond to antenna and cable types.
8. Verify that the settings shown are correct. Then,
restart the reader by disconnecting the power
cable and then reconnecting it.
It may take about 60 seconds for the reader to
restart. If the reader IP address was changed, you
must type the new address into the PC browser
address field to communicate with the reader.
You must know the IP address and subnet mask
settings for the network environment in which the
reader will be running or you may use Apple’s
Rendezvous™ protocol (download Rendezvous™
from Apple’s website) to browse to it. Also if DHCP
and the DNS function are available on the server such
as Microsoft® Windows® 2000 server operating
system, it can tell you an IP address and a hostname.
Note: Please contact Apple about operating the
Rendezvous™ technology.
1. Exit any reader applications that are running on
the network.
IMPORTANT: Running another reader application
while using the browser-based interface may
cause a reader error. If this happens, reboot the
reader or restart the system using the browserbased interface.
2. Verify that the reader is operational. All LED’s
should be out except for the green power LED
which should be pulsing.
3. Start a Java-enabled web browser from any
network-enabled PC. This PC must be configured
with an IP address and subnet mask compatible
with the reader’s settings. For example:
IMPORTANT: Do not disconnect and connect
power cable at the DC cord. Always disconnect
and connect power cable at the AC cord.
9. Once the system restarts, click Settings. You are
taken to the Modify Settings page. Your changes
will be saved and then applied. After the reader
reconfigures its network interfaces, it will
automatically redirect you to its status page.
There is no need to restart the reader.
IMPORTANT: Do not disconnect power while the
reader is saving its new configuration.
The reader is now ready to receive commands
from the network.
10. Use the Query page of the browser-based
interface to verify the reader and antenna
operation by reading tags.
11. Close the browser window. Start an application to
control the reader on the network.
IP address 10.0.0.10
Subnet mask 255.255.255.0
4. Browse to…
http://mercury4 (dhcp name) or
http://10.0.0.101
The V740 Reader browser-based interface to the
reader is displayed.
5. Click the Settings link in the navigation menu.
The Modify Settings page appears.
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1.5 Reader Service
Navigation menu
1.5.1 Using the Browser-Based
Interface
The browser-based interface communicates directly
with the V740 reader. It includes several tools that
enable you to monitor reader performance, change
reader settings, and upgrade reader firmware.
A navigation menu provides access to the following
pages:
•
Status—Displays current operational settings.
•
Query—Allows the user to set timing of operation,
set antennas, set RF air interface protocols, and
read tags.
•
Write—Allows the user to write tags; this is only
applicable to tags that are writeable.
•
Settings—Allows the user to modify radio and
network settings.
•
Firmware—Allows the user to upgrade the V740
reader with new firmware images supplied by
OMRON.
•
Restart—Allows the user to restart the reader.
•
Diagnostics—Provides the current operating
settings of the reader.
•
Help—Provides information that is helpful in
operating the reader.
Description for each page are the following:
The browser-based interface can be run from any PC
on the network. Care must be taken to configure the
PC with an IP address and subnet mask compatible
with the current operational settings of the reader.
To start the browser-based interface:
1. Exit all reader applications on the network.
IMPORTANT: Running another reader application
while using the browser-based interface may
cause a reader error. If this happens, reboot the
reader or restart it using the browser-based
interface.
2. Start a Java-enabled web browser from any
network-enabled PC.
3. Type the IP address of the reader to which you
want to communicate in the address field of the
browser or use Apple’s Rendezvous™ protocol to
browse to it.
4. A navigation menu and the V740 Reader
“Mercury4” Status page appear in the browser.
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Status Page
Query Page
The Status page shows the current settings of the
reader.
Use the Query page to monitor reader performance
(read rags). The Query page is useful for verifying
performance when installation is complete and for
troubleshooting performance issues.
The Query field includes a drop-down list (at the
bottom-right of the screen) that enables you to specify
the operating mode. The operating mode specifies the
tag protocols and the maximum number of tags count
to be used in conjunction with the Query page.
Note: The selected settings DO NOT affect reader
performance associated with other applications.
1. Click the Status link in the navigation menu to
display the Status page.
2. Close the browser window if you are finished
using the browser-based interface.
Note: The status of 'Connected Antenna Ports' is
displayed as 'Connected' only for the antennas
connected to the V740 reader when it starts up.
The following operating modes are available for use
with the Query page:
Each mode provides the most suitable time out value
for the protocols and the number of tags to be read.
less than 10 EPC0 tags
less than 10 EPC1 tags
less than 20 total EPC0 and EPC1 tags
less than 50 EPC0 tags
less than 50 EPC1 tags
less than 100 total EPC0 and EPC1 tags
less than 100 EPC0 tags
less than 100 EPC1 tags
less than 200 total EPC0 and EPC1 tags
Note: The modes that contains ISO18000-6B are
not supported in the firmware version 2.0.61.To
confirm the version of the firmware see the status
page.
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To read Tag data;
•
Show Raw button displays raw tag data on the
Query page. Each entry shows read count,
protocol, antenna, and tag data.
•
Hide Raw button stops the display of raw tag
data.
•
Font Size text box decides the character size of
tags read list.It can be applied from 1 to 128.
•
Clear Output button clears the tags read list
displayed.
•
Query Once button initiates a single search cycle.
1. Click the Query link on the navigation menu. The
Query page appears.
2. Select the operating mode from the pull-down list.
3. Click the Start button to begin reading tags.
If there are tags, tag data is displayed. Each entry
shows sequential tag number, number of times
tag was read, tag data, antenna, and protocol.
4. Click Stop to stop the tag search.
IMPORTANT: You MUST stop the query before
changing the operating mode or RQL command. If
you do not click STOP before exiting the browserbased interface, the reader will continue to poll
antennas.
Note: The SELECT clause may be modified.
However changing the SELECT clause may
cause incorrect display of data.
The Query page provides additional options that
enable you to control the data that is gathered and
how it is displayed:
•
Bignum checkbox (when checked) displays the
total number of unique tags read. The total is
displayed in large red numbers directly over the
tags read list.This function is not available when
Show Raw screen is displayed.
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Write Page
To read data from a tag:
To write data, use the Write page to replace the EPC
data that is encoded on a 915 MHz EPC Class 1 tag.
1. Display the Write page (click the Write link on the
navigation menu).
2. Click the Make Select button. A query designed to
read data from the antenna connected to the port
1 appears in the center window.
3. Place the tag to be read within the detection zone
of the antenna.
4. Click the Submit Query button to read tag data.
Query results appear in the bottom window.
Consider the following guidelines when writing to tags:
•
Always place a tag 0.3–0.6m (1–2ft) from the
antenna when writing data. The tag may be
damaged if it is too close to the antenna.
•
Only unlocked 915 MHz EPC Class1/1B tags can
be used.
•
The data to be written must be exactly 16 or 24
hexadecimal characters (numerals from 0–9 and
letters from A–F)(16 characters for 64 bit tag, 24
characters for 96 bit tag).
•
Always place only one tag in the antenna’s field
when writing. If multiple tags are present, they will
all be encoded with the same EPC data.
•
Use the antenna connected to port 1 of the reader
To write data to a tag:
1. Click the Write link on the navigation menu. The
Write page appears.
2. Type tag ID data in the upper window, type 16
hexadecimal digits for 64bits class 1 tag, or type
24 hexadecimal digits for 96bit class 1B tag.
3. Highlight the hexadecimal data.
4. Click the Make Update button. A query designed
to write the highlighted data to the tag appears in
the center window.
5. Place the tag 0.3–0.6m (1–2ft) from the antenna
connected to the port 1.
Verify that no other tags are in the antenna’s field.
6. Click the Submit Query button to write the data. If
the write was successful, the command line and
the new tag data appears in the bottom window.
If the write is not successful, the response will
include an error message.
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to connect to the reader via its hostname. Usually
when using DHCP, the DHCP server will add the
hostname to the DNS server’s database.
Settings Page
Use the Modify Settings page to change network
settings.
The reader adjusts time by NTP only once when it
starts up.You should confirm if the time is correct
using Get information command(Ref. Section
2.2.4.4).
Note: Please ask the network administrator about the
network settings in your environment.
1. Click the Settings link on the navigation menu.
The Modify Settings page appears.
2. Enter the required settings.
3. Click the Save Changes button to save the new
settings.
IMPORTANT: Do not disconnect power until the
save process is complete.
The new settings DO NOT take effect until the
reader is restarted by rebooting the reader
(see 1.5.2 Restarting the Reader on page 15).
Instructions for Modifying the Settings
Changing these parameters changes the readers
settings used on startup. Both radio settings and
network settings can be modified. Care must be
taken to use correct values or you might be unable to
connect the reader without restarting into safe mode.
Static network settings are ignored when in DHCP
mode, and DHCP related settings are ignored when in
static IP mode. Please note that your network needs
to have properly configured DNS servers if you wish
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Device and LAN settings
Item
Describe
Setting
Requirement
Default
Device Settings
UHF Power (dBm)
Class 1 96-bit
Support
Hostname
NTP Server
UHF Output power in dBm. This setting must be adjusted
carefully to comply with FCC regulations.
Radio button that enables 96-bit tag support. To optimize
the reader keep this setting turned off unless it is needed.
Specify a name that is unique on the network for the
reader.
Mandatory
30.0
ON
Mandatory
mercury4
Specify the IP address (or machine name) of the server to
get current time from the network (either LAN or WAN). The
reader obtains correct time from another device since it
doesn't have a hardware clock.
Optional
(none)
Example) 129.6.15.8(NIST, Gaithersburg, Maryland)
Domain Name
Specify the group name when using devices on the network
as a group. Omit unless using devices as a group.
Optional
(none)
Primary
Server
DNS
Specify the IP address (or machine name) of the server
that replaces a domain name with an IP address on the
network. It is used at first, the secondary DNS server is
used next. Omit if you access by the static IP address.
Optional
10.0.0.1
Secondary
Server
DNS
Specify the IP address (or machine name) of the server
that replaces a domain name with an ID address.The
server is used only when the primary DNS server can not
find the domain name. Omit if you access by the static IP
address.
Optional
(none)
Select whether the reader uses LAN wired or air interface.
LAN(fixed)
Select whether the reader gets an IP address on the
network automatically by DHCP or manual setting. You
must not check the item if you use a manually set IP
address.
Optional
Yes
Class
Specify an extra DHCP parameter for integration and
customization. It is not supported on the firmware version
2.0.61.
Optional
mercury4
Use DHCP Server
Supplied
Hostname
Set this to yes to allow the DHCP server to assign the
reader a hostname.
No
LAN IP Address
Specify a unique IP address on the network when manually
set. It is given automatically by the DHCP server, if using
DHCP.
Mandatory
(in
the case of not
using DHCP)
10.0.0.101
LAN Netmask
Specify the mask value to determine the network address
of the subnet from the IP address. It is not used if using
DHCP.
Mandatory
(in
the case of not
using DHCP)
255.255.255.0
LAN Gateway
Specify a unique IP address for the gateway machine only
when communicating with the device on another LAN. You
don't have to set the item when communicating with the
device on the same LAN. Also It is not used if using DHCP.
Optional (in the
case of not using
DHCP)
10.0.0.1
Default Gateway
LAN TCP/IP Settings
Use DHCP
Vendor
Identifier
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Restart Page
Firmware Upgrade Page
Use the Restart page to restart the reader.
Use the Firmware upgrade page to update firmware.
Only the update firmware file provided by OMRON
can be used.
1. Click the Restart link on the navigation menu. The
Restart Reader page appears.
2. To restart the reader, click the Restart System
button. The following dialog box appears.
1. Click the Firmware link on the navigation menu.
The Firmware upgrade page appears.
2. Place the cursor in the Filename field and type
the complete network pathname of the firmware
file or click the Browse button to locate the new
firmware file.
3. Click OK. The following message appears and
remains on the screen until the reader restarts.
Then the Status page appears.
3. Be sure to click both check boxes if you want the
reader to revert to safe-mode settings(Ref. section
1.5.3.).
The lower check box becomes enabled after
clicking the check box above.
4. Click the Upgrade button to download the new
firmware to the reader.
The status frame at the bottom of the page
displays the progress of the upgrade if the web
browser supports automatic page reload. Click the
Refresh button to update the status bar if the web
browser does not support automatic page reload.
The firmware downloaded to the reader IS NOT
implemented until the reader is restarted.
If an error occurs during the firmware upgrade,
use Safe Mode to recover.
IMPORTANT: DO NOT disconnect power from the
reader while the firmware is being updated. You may
get unpredictable results.
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Diagnostics Page
Help Page
The Diagnostics page provides a wealth of
information, including the current settings of the
reader, comprehensive version information, and
current status of network interfaces.
Use the Help page to view descriptions of system
operations.
•
View Log is used for maintenance of the reader.
For use by OMRON only.
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1.5.2 Restarting the Reader
1.5.3 Using Safe Mode
Use this procedure to recover from a reader error.
Use the Safe Mode button on the reader connector
panel to recover from errors that disable the reader.
1. Click the restart link on the navigation menu.
2. Click the restart button and the OK button on the
confirmation dialog.
Safe mode operation restores factory default settings
as follows:
Firmware Version: ...............factory installed version
Wait for at least 60 seconds for the reader to boot
up. The Power/Heartbeat LED is solid green while
the reader boots. When the LED begins blinking,
the boot process is complete.
Item
Default Value
UHF Power
30.0
Class 1 96 -bit Support
OFF
Hostname
mercury4
NTP Server
louie.udel.edu
Domain Name
thingmagic.com
Primary DNS Server
10.0.0.1
Secondary DNS Server
none
Default Gateway
LAN
The browser-based interface pages are displayed in
red when operating in Safe mode and the reader
function is restricted. Only functions for changing
settings are available, functions for tag operation are
not available. In most cases, the reader will need to
be reconfigured for operation with the reader
application after starting in Safe mode.
1. Disconnect power from the reader.
2. Depress and hold the Safe Mode button, using a
nonconductive object, while restoring power to the
reader. Keep the Safe Mode button depressed
until the reader boots completely (the green
Power/Heartbeat LED blinks).
Safe Mode button
3. Factory-default settings are restored.
4. Use the browser-based interface to configure the
reader for use with your system.
This PC must be configured with an IP address
and subnet mask compatible with the reader
default settings. For example: IP address
10.0.0.10, net mask 255.255.255.0.
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5. Click the Settings link on the navigation menu
and verify the new settings. Be sure to click
[SAVE] to store all settings changes.
6. Restart the reader with the new settings. Once the
restart is complete, the reader is no longer in Safe
Mode.
A navigation menu provides access to the following
pages:
•
Status—Displays current settings in safe mode.
•
Settings—Displays current settings in normal
mode. And allows the user to modify network
settings.
•
Firmware—This page can be used to upgrade the
tag reader with new firmware images supplied by
OMRON.
•
Restart—Allows the user to restart the reader.
•
Diagnostics—This page provides the current
operating settings in safe mode.
Help—This page provides information that is
helpful in operating the tag reader.
Note: Enabling Safe-Mode resets all settings to
factory default. Modify settings in the normal
mode as required for the application.
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1.6 Tag Fundamentals
Class 1B Tags
Class 1B tags contain 128 bits of programmable
memory. The format is almost the same as the Class
1 tags. Bit count of EPC code is 96.
Tag Memory Structure
Protocols and the tag memory structures supported by
the V740 reader are described below. For additional
information regarding tag operation, refer to each tag
specification.
Class 0 Tags
Class 0 tags contain 112 bits of read only memory. It
consists of EPC Code and Check Code data. 96 bits
of them are EPC Code and the rest 16 bits are Check
Code data for the EPC Code.
Byte
10
11
12
13
14
Bit
0-7
8-15
16-23
24-31
32-39
40-47
48-55
56-63
64-71
72-79
80-87
88-95
96-103
104-111
Contents
Byte
10
11
12
13
14
Bit
0-7
8-15
16-23
24-31
32-39
40-47
48-55
56-63
64-71
72-79
80-87
88-95
96-103
104-111
Contents
Check Code (CRC)
EPC Code
12bytes (96bits)
EPC Code
12bytes (96bits)
Check Code (CRC)
Class 1 Tags
Class 1 tags contain 96 bits of programmable memory.
It consists of EPC Code, Check Code data. 64 bits of
them are EPC Code, and the first 16 bits of them are
Check Code for the EPC Code.
Byte
10
Bit
0-7
8-15
16-23
24-31
32-39
40-47
48-55
56-63
64-71
72-79
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Contents
Check Code (CRC)
EPC Code
8bytes (64bits)
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Supported Tag Protocols
1.7 Specifications
915 MHz......................................... EPC Class 1/1B
Electrical
Reader
UHF operating frequency ................... 902–928MHz
Input voltage.........................................24Vdc, 2.0A
Separate Power Supply
Input voltage.......... Nominal 100–240Vac, 50/60Hz
AC line current...................... Nominal 1.6A at 115V
Output voltage ...............Nominal 24Vdc, 2.5A peak
Certified limited power source
Antenna
Operating frequency........................... 902–928MHz
Gain ......................................................... 6dBi max.
V.S.W.R....................................................... < 1.5 :1
Polarization......................................... Liner/Circular
Impedance.....................................................50ohm
Cable length ......................................... 30cm(11.8’)
Environmental
Reader
Operating temperature: ... 0° to 40°C (32° to 104°F)
Storage temperature: .... -20° to 65°C (-4° to 149°F)
Relative humidity: .... 25 to 85%RH non-condensing
Antenna
Operating temperature: -10° to 55°C (14° to 122°F)
Storage temperature: .. -25° to 65°C (-13° to 149°F)
Relative humidity: .... 25 to 85%RH non-condensing
Mechanical
Reader
Dimension .................................308 X 286 X 40mm
Weight ...............................................1.5kg (3.4 lbs)
Protection ......................................................... IP40
Antenna
Dimension ..................................256X 256 X 57mm
Weight ...............................................1.5kg (3.4 lbs)
Protection ......................................................... IP50
Outline Drawings
See on the page 43 to 44.
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2. Query Protocol
2.1 Transport Protocol
Reference Guide
In the current implementation, TCP/IP is used as the
transport protocol. TCP is a connection-oriented
protocol that provides a reliable, in-order data
transport layer with end-to-end checksums and flow
control.
This chapter lays the groundwork for the
communication protocol between client software
running on a remote computer and the V740 Reader.
The client software may be a database system,
enterprise software, or user software.
In this chapter, we discuss the underlying transport
protocol used and present the initial communication
protocol RQL. This protocol is loosely based on the
SQL language with extensions for a better notion of
time. This protocol was designed for rapid prototyping
of applications, where a full query to the reader can be
encapsulated in a single line of ASCII text. A simple
polling mechanism exists for automatically receiving
tag events and for testing.
2.1.1 TCP Connection Setup and
Teardown
A session between client software and the reader
consists of connection setup, data transactions, and
connection teardown.
At present, all connections are initiated only by the
client software. If, for example, the reader is
configured to automatically forward events and/or data
to the client software but the client software has not
established a connection, then no attempt is made by
the reader to contact the client software to establish a
connection. Furthermore, if an extant connection
terminates unexpectedly, the reader will not attempt to
contact the client software to re-establish a
connection. All responsibility for opening, maintaining,
and closing the connection during a session rests with
client software.
The client software sets up a TCP socket connection
on reader port 8080. After connecting successfully,
communication between the client software and the
reader can proceed as described below. Once the
client software has determined that communication
has concluded, the connection must be terminated at
the TCP level. In order to prevent synchronization
issues, each reader will support only one TCP
connection.
Other transport protocols may be used to
communicate between the client software and its
subjugate readers. The application-level protocol
discussed below is neutral with respect to the
transport layer.
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2.2 Event/Query Protocol
The client software can control the reader using RQL
via TCP connection and can acquire data from the
readers in two modes: 1) by requesting specific data
or 2) by automatically receiving events. The two
modes are discussed in further detail in the following
subsections.
In order to keep the protocol comprehensive and easy
to use, we specify a small set of commands that allow
the client software to fully configure the readers and
exploit their capabilities.
This minimal set of commands includes the ability to
request reads based on several relevant criteria (for
example, group reads, range reads, reads by prefix,
and so on). The ability to reset the reader database
and other control capabilities are also provided.
Client PC
1. Query
id
protocol_id
antenna_id
read_count
3. Reply
0x1234 0xABCD
EPC1
EPC0
V740 Reader/Writer
RQL Engine
2. Tag population/general query is made
id
protocol
id
antenna
id
read
count
0x1234
EPC1
2.2.1 Client Software
Requests/Functionality
The client software is able to make the following
requests of a reader:
•
Read IDs of all tags within range of all antennas.
•
Read IDs of all tags within range of a given
antenna.
•
Read IDs of all tags within a certain subset of tag
IDs within range of all antennas.
•
Read IDs of all tags within a certain subset of tag
IDs within range of a specific antenna.
•
Read Individual tag IDs within range of a certain
antenna or all antennas.
•
Read only the IDs of tags communicating a given
RF communication protocol.
•
Return the number of times a given tag was read
per query.
•
Read IDs from a variety of tag protocols
•
Write IDs to a tag from a variety protocols as they
are supported.
•
Register any commands as aliases (cursor) to the
V740 reader.
•
Execute any aliases (cursor) one time
•
Execute any aliases (cursor) repeatedly at the
indicated interval.
•
Execute any aliases (cursor) repeatedly in the
specified term.
Figure 1 : Conceptual diagram of control flow
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2.2.2 General Observations,
Commands, and Syntax
We note that a reader behaves very much like
database wherein each individual tag represents an
entry in the database with a given set of attributes.
Due to memory constraints of the reader, the system
will remove entries from the database as they are
queried.
2.2.3 Extended RQL Command
Structure supported by the V740
Reader
Extended Command Set for Data and Write,
and Lock operations
ID Read : Identify tags, including anti-collision.
The syntax for querying against this database is
derived from SQL syntax.
ID Write : Change tag ID
In the simplest case, the client software explicitly
requests data by polling the readers. The request
protocol is implemented in such a way that the client
software specifies:
Kill : Initialize tag
ID Lock : Prevent further changes of tag ID
Password : Set a pass-code to kill a tag
Table1: Supported Protocols for each function
Required information.
• What subset of tags the reader should consider.
Function
EPC1
EPC1B
EPC0
Read
○
○
○
Write
○
○
N/A
Lock
N/S
N/S
N/A
Kill
N/S
N/S
N/A
Password
N/S
N/S
N/A
• Which read constraints should be applied.
Example commands:
ID
• SELECT id FROM tag_id WHERE
id=0x1234567890ABCDEF AND antenna_id=1 AND
protocol_id='EPC1';
Would return a tag only if its tag ID was
0x1234567890ABCDEF.
• SELECT id FROM tag_id WHERE (antenna_id=1
OR antenna_id=2) AND protocol_id='EPC1'
SET time_out=1000;
Would return a tag only if the antenna ID was 1 or
2 and will search for at least 1000ms.
Note: The RQL command is terminated by a
semicolon. When you use sample commands in this
manual, you must input a command in one line
without line feed characters.
N/S:Not Supported in firmware Ver.2.0.61
Applicable
N/A:Not
With the exception of the ‘ID Read’ command, all
commands are protocol and antenna specific and can
only be used with a single protocol at a time and with
a single antenna at a time. Hence all queries with the
exception ‘ID Read’ need to be constrained to one
protocol and one antenna, for example
WHERE protocol_id='EPC1' and
antenna_id=1
A complete example of an ‘ID Write’ query would be
UPDATE tag_id SET
id=0x0123456789ABCDEF WHERE
protocol_id='EPC1' AND antenna_id=1.
‘ID Read’ (enumerate tags) is, by definition, a multitarget command, since it determines what the
individual targets are in the first place.
There are some special cases to the single-target
rule. For example, ID Write is semantically tricky –
what does it mean to target a tag if its target ID is
going to be changing? In the current state of the art,
most protocols do not support addressed ID writes (ID
write targets all tag IDs) or disallow tag ID changes
entirely.
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[id1]  [id2] .....[idn] 
2.2.4 Detailed Command Structure
2.2.4.1 ID Read
The client software would use the SELECT command
to read IDs of tags. The SELECT command is for
querying the tag population of the reader as well as
static variables such as firmware version. The
structure of a SELECT command is as follows:
The response includes the check code and ID. The
first 4 digits are the check code, and the ID follows for
the EPC1/1B protocols. For EPC0, the 24 digits ID is
first, followed by the 4 digit check code.
Below are some examples for reading tag ID:
•
To query a tag on a specific antenna and protocol,
you can specify a specific antenna and protocol in
the 'where_specification':
SELECT entry_list FROM
table_expression where_specification
[set_specification];
SELECT id FROM tag_id WHERE
antenna_id=1 AND protocol_id='EPC1';
SELECT id FROM tag_id WHERE
antenna_id=2 AND protocol_id='EPC0';
The first specifies 1 as an antenna id, and EPC1 as a
protocol id. The second specifies 2 as an antenna id,
and EPC0 as a protocol id. The reader searches tags
that corresponds to the condition, and returns the tag
ID if the tag is present followed by LF code, an empty
event (only LF code) results if tags matching the
'where_specification' are not present.
Ref. Table 2 for entry_list details.
A SELECT clause is entered as:
SELECT entry1, entry2, entry3, ...
one or more entries can be specified, for multiple
entries, a comma delimiter is required.
A table_expression is specified by only one table
name.
•
FROM table
To query a tag on multiple antennas and
protocols, you can specify multiple antennas and
protocols by 'OR' operator in the
'where_specification':
In the function ID Read, you always use 'tag_id' as a
table name. And so the table_expression is as
follows:
SELECT id FROM tag_id WHERE
(antenna_id=1 OR antenna_id=2) AND
protocol_id='EPC1';
From tag_id
A where_specification is entered as:
SELECT id FROM tag_id WHERE
antenna_id=2 AND (protocol_id='EPC1'
OR protocol_id='EPC0');
WHERE boolean_expr
The first specifies 2 antennas, and the second
specifies 2 protocols.
boolean_expr can consist of any expression which
evaluates to a boolean value. In many cases, this
expression will be:
entry binary_operator value
•
where binary_operator can be one of =, <, <=, >, >= ,
<>, AND, or OR. Parentheses may also be used to
create associations of subexpressions. In the
presence of a 'where_specification', SELECT will not
return any rows for which the WHERE condition does
not evaluate to TRUE.
Note: You must specify one or more protocols in
'where_specification'.
A set_specification is entered as:
SET expression
To query a specific tag, given its EPC code, one
can specify a specific tag with an ID as a
hexadecimal number:
SELECT id FROM tag_id WHERE
id=0x1234567890ABCDEF AND
antenna_id=1 AND protocol_id='EPC1';
When Indicating id in the 'where_specification',
the reader searches the ID from the higher order.
If the value is shorter than 16 digit for EPC1(24
digit when using EPC1B), it examines only upper
bits.
SELECT id FROM tag_id WHERE
antenna_id=1 AND protocol_id='EPC1' AND
id=0x1234;
expression consists of entry and the value.
In response, all IDs delimitted by LF code are sent.
The format is as follows:
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•
•
To query a specific sub class of tags, given a
range of tag ID values:
When the client software reads tags of the 'EPC0'
protocol, it should indicate 'read_count>1' in the
'where_specification'.
SELECT id FROM tag_id WHERE
protocol_id='EPC1' AND
tag_id>=min_tag_id AND
tag_id<=max_tag_id;
For example, the command is as follows:
The reader returns the tag ID values for all the
present tags between min_tag_id and
max_tag_id, which are hexadecimal values.
•
SELECT id FROM tag_id WHERE
antenna_id=1 AND protocol_id='EPC0' AND
read_count>1;
To read EPC1 and EPC0 tags at the same time:
To query tags by specific or all antennas:
SELECT id FROM tag_id WHERE
protocol_id='EPC1' OR
(protocol_id='EPC0' AND read_count>1);
SELECT id FROM tag_id WHERE
antenna_id=1 AND protocol_id='EPC1';
Note: If you don't specify the 'read_count>1', the
reader returns ghost data occasionally. 'Ghost
data' means the data which is returned even if
tags do not exist in the antenna field.
SELECT id FROM tag_id WHERE
protocol_id='EPC1';
At the first, the reader searches tags only by
antenna 1. Second the reader searches tags by
all antennas available. Omitting the antenna
indication in the 'where_specification' means to
search all antennas available.
•
The command imposes a time out constraint of
500ms; i.e., the reader stops reading and returns
all collected data after 500ms. The order in which
specifying arguments are used is irrelevant. The
default timeout is 250ms if none is specified.
SELECT id FROM tag_id WHERE
(antenna_id=1 OR antenna_id=5) AND
protocol_id='EPC1';
It is important to always use a timeout in
specifying a query to achieve optimal
performance for a given application. Detailed
information will be discussed in the next section
The client software can specify multiple entries in
the select_list field of the SELECT command:
SELECT id, antenna_id FROM tag_id
WHERE antenna_id=1 AND
protocol_id='EPC1';
SELECT protocol_id, timestamp, id,
antenna_id FROM tag_id WHERE
antenna_id=1 AND protocol_id='EPC1';
The first example returns the tag IDs and
antenna_ids, and the second returns protocol_ids
and the time that the tag was read (seconds from
the unix epoch, Jan 1, 1970) with the tag IDs and
antennas_ids.
Timeout
The client software can impose a time limit on a read
operation, requesting the reader to search only for a
limited time (specified in milliseconds). The reader
may fail to detect some tags if insufficient time is
allocated to the search operation. The time_out is the
parameter used for specifying the time allocated for
the read operation.
Note: To read timestamp, the NTP sever must be
set up in advance.
Conveyor
The reader returns protocol_id as an integer value.
The value '1' represents 'EPC1',and the value '9'
represents 'EPC0'. For example, the query with
protocol_id and the response is as follows:
short
1|0xCE791111111111111111
V740 RFID READER/WRITER, ANTENNA
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Application
time out
Dock
Station
long
In general, a large time_out should be used for dock
stations (>2000ms), and short time_outs should be
used for conveyor belts (<100ms).
[Query] SELECT protocol_id, id FROM
tag_id WHERE antenna_id=1 AND
protocol_id='EPC1';
[Res]
To query during a specific time:
SELECT id FROM tag_id WHERE
antenna_id=1 AND protocol_id='EPC1'
SET time_out=500;
Note: When specifying multiple antennas even if
an antenna that does not exist is specified, the
reader obtains the tag ID only using antenna 1
and doesn't return any an error message.
•
To query EPC0 tags:
SELECT id FROM tag_id SET time_out=1000;
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(See 3.2 Communications Time)
The constraints on the scheduler in the reader for the
time_out are shown below. Time is equally divided
among the specified protocols. The reader searches
sequentially for each antenna in the time provided for
the protocol. When the last antenna completes
searching, the reader returns to the first antenna
again. Following chart shows an example of time
schedule given by the model command as below.
SELECT id FROM tag_id WHERE
(protocol_id='protocol1' or
protocol_id='protocol2') and
(antenna_id=ant1 or antenna_id=ant2);
ant1
ant2
ant1
EPC1
350 ms
ant1 ant2 ant1
ant1
ant2
ant1
...
ant1
ant2
ant1
EPC0 and EPC1 will each get a 350 ms slot. This will
allow all 20 EPC0 tags to be read, but not all EPC1
tags.
protocol 2
...
EPC0
450 ms
If the EPC0 tags are present only on the 2nd antenna,
the reader will never arbitrate time to this antenna. A
better query would be:
time_out
protocol 1
time_out
700 ms
SELECT read_count, protocol_id,
antenna_id, id FROM tag_id WHERE
(antenna_id = 1 OR antenna_id = 2) AND
(protocol_id='EPC1' OR
protocol_id='EPC0') SET time_out=1600;
...
The antenna arbitration algorithm is optimized to
maximize the read rate of all the tags in the field. For
EPC0, each antenna will be given 150ms of search
time. The time division for each antenna within a
protocol is determined automatically by the reader and
cannot be specified by the user.
time_out
1600 ms
EPC1
800 ms
ant1
It is important to specify the protocols in the RQL
commands, if no protocol is specified, the reader
searches for tags using all possible protocols,
resulting the slower read rates. When specifying
multiple protocols, calculate the minimum time_out
value using the following calculation.
ant2
ant1
EPC0
900 ms
... ant1
ant2
ant1
...
Both EPC0 and EPC1 will get 800 ms:
each antenna for EPC0 will get 400 ms (above
150ms) should read all 20 EPC0 and 20 EPC1.
minimum time_out = max{# of protocol 1 tags x
read time of (1) tag), (# of protocol 2 tags x read
time of (1) tag),..} x ( # of protocols) x (# of
antennas) (ms)
e.g. if 40 EPC0 tags takes 450 ms (cf. 3.2
Communications Time) and 10 EPC1 tags takes
20 ms per tag on average. With two antennas:
minimum time_out =
max{450, 10 x 20} x 2 x 2 = 1800 ms.
Note: It is caused by following reasons that difference
between the time_out value actual time required for
reading.
1. It spends 20 ms to switch protocols.
2. It is fixed on 150 ms to read EPC0 tag.
The max of the difference can be calculated by
summing up the time caused by the reasons. You
need consider time lag to avoid mutual interface due
to time sharing.
As another example, if the goal is to search for EPC1
and EPC0 tags on antennas 1, 2 for 20 strong tags on
each protocol. The query specified is;
SELECT read_count, protocol_id,
antenna_id, id FROM tag_id WHERE
(antenna_id = 1 OR antenna_id = 2)
AND (protocol_id='EPC1' OR
protocol_id='EPC0') SET
time_out=700;
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Table 2: Table Schema - Tag Read
Keyword
SELECT
Entry
Table
Arguments
Range
Example
Value
Comments
id
tag_id
Hex String
0xFEDCBA0
987654321
Requests the id tag
data (tag id) of the tag
antenna_id
tag_id
Int
Requests the antenna
id used to read the
tag
protocol_id
tag_id
Int
9 ( EPC0),
Requests the protocol
id of the tag
1 (EPC1/1B)
read_count
tag_id
Int
Requests the number
of times a tag ID was
read
tag_id
String
1101973245.
003590
Requests the time M4
read data from the
tag.
(*1)
timestamp
To get the correct
time, you need to
adjust the clock by
setting NTP server.
FROM
tag_id
The name of the
internal
tag
data
table(fixed)
WHERE
antenna_id
tag_id
Int
[1...4]
Specifies the antenna
used to read a tag
protocol_id
tag_id
String
'EPC1'
'EPC0'
'EPC1'
Specifies the protocol
used to read a tag.
or
Must be uppercase.
SET
read_count
tag_id
Int
1 and over
Specifies the number
of times a tag was
read
id
tag_id
Hex String
0xFEDCBA0
987654321
Specifies the tag id to
be read.
time_out
tag_id
Int
[1...65535]
500
Specifies the amount
of time the SELECT
command will read
tags in milliseconds.
Note(*1): If you specify 'read_count' on 'EPC1' protocol, the reader returns '1' due to the search algorithm.
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2.2.4.2 ID Write
The UPDATE command is used to write new data to a
tag. This can be used to write a new tag_id. The
structure of an UPDATE command is as follows:
If wrong data is written to the tag, the tag may be
unreadable. In this case, write correct tag ID again,
after that, the tag would turn to be readable.
UPDATE table_expression set_specification
where_specification;
table_expression and entries specified in
set_specification are provided in Table 3.
A table_expression is specified by only one table
name:
UPDATE tag_id
A set_specification is entered as:
SET entry=value
A where_specification is entered as:
WHERE boolean_expr
In a where_specification, both protocol_id and
antenna_id must be specified.
The tag_id (tag data) is returned with a check code as
follows:
EPC0: [id][check_code]
EPC1:[check_code][tag_id]
The 'where_specification' is specified in the same
manner as the SELECT in the previous section.:
•
Example : To write tag data(tag_id) a 64-bit EPC
tag:
UPDATE tag_id SET id=0x1234567890ABCDEF
WHERE protocol=’EPC1’ AND antenna_id=1;
The reader returns the tag_id if the write operation
was successful.For example the response is as
follows:
0xCE851234567890ABCDEF
In this case, “CE85” is the check code.
“1234567890ABCDEF” is tag data(tag id).
If the operation is failed, "Error 0102: Error
performing query" returend.
Note: The format of the tag data in the command
must much the selected protocol or an error will result.
For example :
- A 64 bit EPC1 tag requires 16 hexadecimal digits
- A 96 bit EPC1 tag requires 24 hexadecimal digits
(See section 1.6)
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Table3 : Table Schema - Tag Write
Keyword
Entry
Table
Arguments
Range
Example
Value
Comments
UPDATE
tag_id
Tag id data
database
table(fixed)
SET
id
tag_id
Hex String
0xFEDCB
A0987654
321
Specifies the tag
id(tag data) to be
written
WHERE
antenna_id
tag_id
Int
[1...4]
Specifies the
antenna used to
read a tag
protocol_id
tag_id
String
'EPC1'
'EPC1'
Specifies the
protocol used to
read a tag.
Must be uppercase.
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2.2.4.3 Reader Control
The client software can register a command with a
cursor name to the reader. This section describes
Cursors(Stored Procedures or Aliases ) and Reader
settings.
daemon to its initial state; that is, resets the reader,
deletes cursors used clears memory.
ii. Execution
Commands stored as cursors can be executed in 3
ways as described below.
i. Cursors
Fetch
Declare
The client software has the ability to declare cursors
(saved queries), which it can then use to request data
repeatedly using the FETCH or the AUTO_MODE
command. Only One cursor can be executed at one
time. A maximum of 16 cursors can be defined.
To create a cursor:
To execute the stored cursor,a FETCH command is
sent by the client software. Only one cursor can be
executed at one time.
FETCH cursorname;
which performs all actions appropriate to the declared
query and sends the result back.
Example:
DECLARE cursorname CURSOR FOR query;
DECLARE cursor3 CURSOR FOR SELECT id,
antenna_id FROM tag_id WHERE id =
0x11111111111111111111 AND
protocol_id='EPC1';
cursorname — an arbitrary string.
query — an RQL query (SELECT/UPDATE
statement), as defined above.
FETCH cursor3;
If the query is valid in its syntax,an empty event (only
LF code) is returned. If invalid, an error message is
shown(Ref. Table 6).
could return:
if the tag was read by antenna 2,
Example:
DECLARE cursor1 CURSOR FOR SELECT id,
antenna_id FROM tag_id WHERE
protocol_id='EPC1';
0xCE791111111111111111|2
or if the tag was not found.

DECLARE cursor2 CURSOR FOR UPDATE
tag_data SET id=0xFEDCBA9876543210
WHERE protocol_id='EPC1' and
antenna_id=1;
Sequence of execution
Note: Commands for getting information and setting
the separator can not be used as cursors.
DECLARE
FETCH
RQL execution
Response
Close
To close(delete) a cursor and free its resources(only
16 cursors may be defined simultaneously). Only one
cursor can be closed at one time. The client software
issues the command:
CLOSE cursorname;
If the cursorname is valid, following the command, an
empty event (only LF code) is returned.
time
Auto Mode
The client software may switch the reader into Auto
Mode, causing the reader to repeatedly execute a
cursor indefinitely.
SET auto cursorname = ON, repeat = interval;
For example,
Reset
DECLARE cursor4 CURSOR FOR SELECT id,
antenna_id FROM tag_id WHERE
protocol_id='EPC1' SET time_out=250;
To reset the reader RQL server, for example, if the
RQL state is undefined or questionable, use:
RESET;
Following the command, an empty event (only LF
code) is returned. The command returns the RQL
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SET auto cursor4 = ON, repeat = 500;
Every 500 milliseconds, the cursor executes for
250milliseconds querying for tags. The remaining 250
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milliseconds are spent with cursor idle(RF off). This
syntax can be used for controlling the duty cycle of the
reader. For full reader utilization, ensure that the value
of time_out is less than the value of repeat, if not the
cursor is executed continuously.
The second form runs during the specified interval.
The start and stop time are specified in ISO8601 time
strings, of the form
Auto Mode can be terminated by sending the
command:
YYYY-MM-DDTHH:mm:SS.DDDDZZZZZ
SET auto = OFF;
No other command can be used while Auto Mode is
active.
To schedule intermittent reads with off times of 1
second starting at a specific time use:
Example:
DECLARE cursor5 CURSOR FOR SELECT id
FROM tag_id WHERE protocol_id='EPC1'
SET time_out=500;
SET auto cursor5 = ON, repeat = 1000;
(get resopnses...)
SET auto = OFF;
DECLARE AUTO ON
The first form here starts the auto mode at a given
time, and then just continues until you stop it, the
same way you would stop normal auto mode.
Where YYYY is the year, MM is the month, DD is the
day, HH is the hour, mm is the minute, SS is the
second, and DDDD is the fraction of a second, and
ZZZZZ is the time zone. The seconds and fractions of
a second are both optional (but if you want fractions of
a second, you must specify seconds as well). The
time zone can either be specified as GMT or Zulu time
by using a 'Z' or it can be an offset from GMT using
+HH:MM or -HH:MM. For example, in Eastern time,
that would be -05:00.
Some examples:
C6:
DECLARE cursor6 CURSOR FOR SELECT id
FROM tag_id WHERE antenna_id=1 AND
protocol_id='EPC1';
C7:
DECLARE cursor7 CURSOR FOR SELECT id
FROM tag_id WHERE antenna_id=2 AND
protocol_id='EPC1';
AUTO OFF
RQL execution
To run c6 once on February 14th 2004 at 18:54:50
GMT:
Response
repeat
SET trigger_time cursor6 = '200402-14T18:54:50Z';
repeat
time
Scheduled Reads
The reader uses the Network Time Protocol as a
means to establish absolute time on the reader. With
that capability in place the reader is enabled to
execute tag operations that have been scheduled
relative to absolute time. The reader adjusts UTC time
of the NTP server, whatever time zone it works on.
Here is how it works.
To run c7 for 10 seconds starting in intervals of 1000
ms at 2004-01-20 at 15:37 in Eastern Standard Time:
SET auto_time cursor7 = '2004-0120T15:37-05:00/2004-01-20T15:37:1005:00', repeat=2000;
Note: If only the start time is specified, and the current
time has passed the start time, the cursor is executed
immediately.
First the user declares a cursor , in a way similar to
how to you use cursors in auto mode.
To run the query once at a specific time you use a
command of the form:
SET trigger_time cursorname = 'starttime';
To run the query in auto mode over a given interval:
SET auto_time cursorname = 'starttime',
repeat=interval;
or
SET auto_time cursorname =
'starttime/stoptime', repeat=interval;
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If the current time has passed the start time and the
stop time specified in the future, the cursor is
executed immediately and finished at the specified
stop time.
Example:
The following example schedules reads to execute 1
time per second with an off time of 750ms, starting at
a specific time:
DECLARE cursor8 CURSOR FOR SELECT id
FROM tag_id WHERE protocol_id='EPC1';
SET auto_time cursor8 = '2004-0122T12:43:08-05:00', repeat=1000;
DECLARE SET auto_time
RQL execution
Response
repeat
start time
repeat
time
(stop time)
iii. Setting
Separator
The client software can change the separator between
the entries of the response for ID reading.(Ref. 2.2.4.1
ID Read).
SET separator = 'c';
Following the command, an empty event (only LF
code) is returned. The default separator is '|'. The
separator must be one character. Example is as
follows:
SET separator='#';
SELECT id, protocol_id, antenna_id FROM
tag_id WHERE protocol_id='EPC1';
The response would be as follows.
0xCE85123467890ABCDEF#1#1
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Table4 : Table Schema - Reader Control
Keyword
DECLARE
Entry
Table
n/a
Arguments
cursorname,
Range
Example
Value
Comments
cursor1
Defines the cursor name for
the query.
query
FETCH
n/a
cursorname
cursor1
Executes a cursor and
sends the data
CLOSE
n/a
cursorname
cursor1
Deletes a defined cursor
RESET
n/a
Resets the reader, deletes
cursors, clears memory
SET
tirgger_time
n/a
cursorname,
Set a cursor to run at the
specified time once.
Set a cursor to keep
running from the start time
to the stop time repeatedly.
time
auto_time
n/a
cursorname,
start time,
stop time
auto
n/a
cursorname,
ON, OFF
cursor1 = ON
Turns auto-mode of cursors
on/off.
repeat
n/a
Integer
Sets a cursor to keep
running
separator
n/a
character
except
';'
‘|’
Changes the separator in
the output format of a
query.
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2.2.4.4 Get Information
The client software can get the information about the
status of the reader. For example, firmware version
and current time of the system. To get firmware
version information,The format is as follows:
SELECT entry FROM table_expression
Table5 : Table Schema - Get Information
Keyword
SELECT
FROM
Entry
Table
Arguments
Range
Example
Value
Comments
version
Firmware
String
2.0.61 (20050106T16:40:1205:00)
Requests the
firmware version of
the reader
current_time
Settings
String
2005-0101T00:01:39.8
91808
Requests the
current time of the
reader.
Firmware
Table for the
information about
the reader's
firmware.
Settings
Table for the
information about
the reader's
settings.
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2.2.5 Errors
If the reader is unable to execute a command issued
by the client software, the reader issues an error
message, which has the basic form:
Error error_code : string
where error_code is an integer. Error codes and
strings are documented in Table 6.
For example:
DECLARE cursor9 CURSOR FOR SELECT id
FROM tag_id;
FETCH cursor10;
Would result in the error message:
Error 0100: Cursor does not
exist
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Table 6: Error codes and Strings
Error Codes
Strings
Explanation/Cause
0100 :
No protocol specified
Indicates missing or more than 17
protocol_id are declared(only for UPDATE
command)
Too many protocols specified
Indicates too many protocols are declared
(only for UPDATE command)
No antenna specified
Indicates more than 17 antenna_id or no
antenna are declared (only for UPDATE
command)
Too many antennas specified
Indicates multiple antennas are
declared(only for UPDATE command)
ERROR_INVALID
_ARGUMENTS
Unknown table
Cursor already exists
Declared cursor name already exists
Unknown setting
Indicates no entry item in the table
Cursor does not exist
Fetch non-existent cursor
Unknown field
Indicates items for GetInfo command (only
for UPDATE command)
Invalid set clause entry
DELETE: Cursor does not exist
Indicate a cursor name for CLOSE command
that is not defined by DECLARE command
Start_time not specified correctly
Indicate time format incorrectly for start or
finish time.
time_out value out of range
Set sleep time_out value out of range
Unknown protocol
Indicates nonexistent protocol
Syntax Error
Syntax error or spelling misstake etc
Invalid argument
0101 :
Unknown setting
ERROR_INVALID
_DATA
Time is invalid
0102 :
Unknown protocol ID
Invalid command in current mode
Execute a command while another command
is running on auto mode
Error performing query
Tag is absent.
ERROR_REMOT
argument is illegal.(only for UPDATE
command)
Error setting ping threshold
Error setting saved ping threshold
Error setting saved IP address
Error setting saved gateway
Error setting saved netmask
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Error setting firmware version
Error setting safemode version
Error setting OS version
Error setting supported protocols
Error getting operation state
0106 :
ERROR_INVALID
_ANTENNA
0107 :
ERROR_UNCON
NECTED_ANTEN
NA
0128:
ERROR_UNKNO
WN
Antenna does not exist
hardware configuration
in
current
Antenna does not exist in current hardware
configuration.
Antenna port exists.But no antenna
connected
Antenna port
connected.
exists.But
no
antenna
Tag data access failed
Table name on update command is invalid
Error getting entry
Error getting ip address entry
Error getting netmask entry
Error getting gateway entry
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2.2.6 Protocol Specific Functionality and Parameter Settings
While the standard ID_read and anti-collision searches are supported by practically all offered protocols,
therefore no protocol-specific information is required to issue RQL search. More specific commands, such as
data_read and data_write require protocol specific information when formatting the query and interpreting the
results. The tables below provide that information.
2.2.6.1 915 MHz EPC Class 1/1B
Parameters /
Constraints
Read
()
Write
id: 64 bits
or 96 bits
(hex)
Lock
N/S
ID
Kill
N/S
Password
N/S
Return Value
(String)
Class1: 80 bits (64
bits ID and 16 bits
CRC, hex format)
Class1B: 112 bits
(96 bits ID and 16
bits CRC)
Example
SELECT id FROM tag_id WHERE
protocol_id='EPC1';
new_id or error_code
with string
UPDATE tag_id SET
id=0x1234567890ABCDEF WHERE
protocol_id='EPC1' AND
antenna_id=1;
Note: The state of the tag becomes 'Quiet' after reading by RQL. If you wish to communicate with the tag
using a 2nd reader, a ‘Talk’ command must be sent to change the tag to active mode.(for more detailed
information about the status of the tag see 'Communication Inferface Specification' for EPC1)
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2.2.6.2 915 MHz EPC Class 0
ID
Parameters /
Constraints
Return Value
(String)
Example
Read
()
112 bits (96
bits ID and 16
bits CRC)
SELECT id FROM tag_id WHERE
protocol_id=’EPC0’ AND
read_count>1;
Write
N/A
Lock
N/A
Kill
N/A
Password
N/A
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2.3.3 Example 3
2.3 Examples
Examples given in this chapter are provided as a
guide for the user in determining suitability and does
not constitute a warranty. Users must verify operation
in their specific environment and application.
To synchronize two readers see the following
instructions.
On Reader 1:
DECLARE cursor_one CURSOR FOR SELECT
id FROM tag_id WHERE
protocol_id='EPC1' SET time_out=300;
2.3.1 Example 1
To read tags attached to cases passed through a gate
on a conveyer, the client software finds tags using 2
antennas. For the example pictured below, the
command is as follows:
SELECT id, antenna_id FROM tag_id
WHERE (antenna_id=1 OR antenna_id=2)
AND protocol_id='EPC1' SET
time_out=500;
SET auto_time cursor_one = '2005-0201T13:00:00Z', repeat=1000;
The first reader will start reading for no less than 300
ms at just 13 o’clock, and it will repeat the command
1000ms.
On Reader 2:
DECLARE cursor_two CURSOR FOR SELECT
id FROM tag_id WHERE
protocol_id='EPC0' AND read_count>1
SET time_out=300;
Then the reader continues to read tags through the
gate.
SET auto_time cursor_two = '2005-0201T13:00:00.5Z', repeat = 1000;
The second reader will start reading for no less than
300ms starting at time 0.5 second after 13 o’clock,
and it will repeat the command every 1000ms.
antenna 2
antenna 1
tag
The effect will be that each reader will have a almost
50% duty cycle with each one only active when the
other one is off.
conveyer
cases
2.3.2 Example 2
Reader 1
To read tags and send a response repeatedly every 1
second using one antenna. For the example pictured
below, the command is as follows:
Line 1
DECLARE query1 CURSOR FOR SELECT id
FROM tag_id WHERE antenna_id=1 AND
protocol_id='EPC1' SET time_out=500;
Line 2
SET AUTO query1=ON, repeat=1000;
Reader 2
antenna 1
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3 Characteristics(Reference)
Antenna
Characteristics data given in this chapter is provided
as a guide for the user in determining suitability and
does not constitute a warranty. Actual performance
may vary based on actual user conditions.
Tag
*. There are no RF reflection objects around the Antenna and Tag
in the measurement environment.
*. There are some areas where communication is possible outside
the communications range shown in the graph by the effect of
reflection off of the ground.
*. Tag attached to styrene resin.
*. The UHF power setting of the reader is “31.5” dBm with 3.0m
cable.
3.1 Communications Range
EPC Class 0 : X1020-LBL,Matrics (Dual Dipole)
350
300
250
200
150
100
50
-200
-150
-100
-50
50
100
150
200
unit : cm
Antenna
EPC Class 1b : V740-D12P01, OMRON
350
300
250
200
150
100
50
-200
-150
-100
-50
50
100
Antenna
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REFERENCE GUIDE
150
200
unit : cm
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3.2 Communications Time
Communications time varies for several reasons
such as the actual noise environment and the
distance between tags and antennas. The chart
below shows the communication time vs. the
number of tags in the antenna read range. One may
use the communication time value as a reference
when setting time out values in the RQL command.
Actual communications time
(ms)
Class0 Tags
600
500
400
300
200
5 10 15 20 25 30 35 40 45
Number of tags
Actual communications time
(ms)
Class1/1b Tags
900
800
700
600
500
400
300
200
100
10 15 20 25 30 35 40
Number of tags
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APPENDIX : OUTLINE DRAWINGS
Reader : ( V740-BA50C04-US)
Material : Aluminium
Antenna Cable:
Short cable (V740-A01-3.0M)
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Long cable ( V740-A01-10M)
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Modify Date                     : 2005:08:22 16:42:32+09:00
Create Date                     : 2005:08:22 16:39:24+09:00
Page Count                      : 45
Creation Date                   : 2005:08:22 07:39:24Z
Mod Date                        : 2005:08:22 07:39:24Z
Producer                        : Acrobat Distiller 5.0.5 (Windows)
Author                          : Brad Kreider
Metadata Date                   : 2005:08:22 07:39:24Z
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Title                           : SensorID Agile Reader 2 Installation and Service Guide 8200-0222-08
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