BRI Programming
COMPANY CONFIDENTIAL
Jim Peternel
Introduction
Provide general overview of the Basic Reader
Interface (BRI).
 Will not cover every command.
 Will cover most commonly used features.
 Will not cover commands that are not part of the IV7 or
serial reader interface.

COMPANY CONFIDENTIAL
Slide 2
Overview
Overview of available interfaces to Intermec readers
 Supported Tag Types
 Tag memory map
 Tag Singulation
 BRI Protocol
 BRI Features and Commands

COMPANY CONFIDENTIAL
Slide 3
Supplementary Documents

For a full reference
document on the BRI
download:

“BRI Basic Reader
Interface, Programmer’s
Reference Manual”
COMPANY CONFIDENTIAL
Slide 4
Please Ask Questions At Any Time
COMPANY CONFIDENTIAL
Slide 5
Application Development Overview
Currently four approaches
 Basic Reader Interface (BRI)
 Intermec Developer Library (IDL)
 Low Level Reader Protocol (LLRP)



Currently IF61 reader ONLY
Application Layer Events (ALE)

Currently IF61 reader ONLY
COMPANY CONFIDENTIAL
Slide 6
Basic Reader Interface (BRI)
Intermec reader interface
 Simple ASCII only interface, human readable.
 Provides a simple command/reply operations and
asynchronous event messages.
 No drivers.
 Available on all Intermec readers
 Can be run from any platform, OS.

COMPANY CONFIDENTIAL
Slide 7
Intermec Developer Library (IDL)
RFID Class
 Easy to use and free
 Requires drivers from Intermec
 Available on Intermec readers
 Java, .Net (e.g. C#, VB)
 Runs on Win32, Windows Mobile, PPC 2003
 Also runs on Linux using Windows Mono drivers (IF61)

COMPANY CONFIDENTIAL
Slide 8
Low Level Reader Protocol (LLRP)
EPC Global Standard Interface.
 Currently IF61 only.
 Future release planned for the IV7/CV30
 XML “based” HOWEVER…
 Binary interface to reader.
 Complex to use.
 Provides access to many low level features in the
reader.

COMPANY CONFIDENTIAL
Slide 9
Application Layer Events (ALE)
EPC Global Standard Interface.
 Currently IF61 only.
 Report based interface.
 Available on the IF61 only.
 ALE Store and Forward application comes standard
with the IF61.

COMPANY CONFIDENTIAL
Slide 10
TAG TYPES
Identifier
Air-protocol(s)
Description
MIXED
ISO180006B, UCODE119
types only
G1, G2 and v1.19 tags only It is recommended
that G1 mode be used in place of MIXED (
MIXED mode is kept for backward compatibility
only )
G1/ISO6BG1
ISO180006B
ISO6B G1 tag
G2/ISO6BG2
ISO180006B
ISO6B G2 tag
ICODE119
UCODE119
Phillips v1.19 (ISO6B emulating EPC tag ID’s)
V119
UCODE119
UCODE119
Phillips v1.19 (ISO6B emulating EPC tag ID’s)
EPCC1G1
EPCC1G1
EPCglobal UHF Class 1 Gen 1
EPCC1G2
EPCC1G2
EPCglobal UHF Gen2
COMPANY CONFIDENTIAL
Slide 11
EPCC1G2 Memory Map
Bank 3
UID Optional ? Bytes
Bank 2
TID 4+ Bytes (not necessarily unique)
Bank 1
Header info Bytes 0-3
EPC Code Bytes 4-15
Bank 0
Kill Password 4 Bytes
Access Password 4 Bytes
COMPANY CONFIDENTIAL
Slide 12
Tag Singulation
The following is a simplification of the process
 Reader sends RESET to all tags
 Reader tells all tags to roll a random number in the
range of zero to Q. That number is the tags slot or
position in line.

COMPANY CONFIDENTIAL
Slide 13
Tag Singulation
Reader sends RESET to all tags
 Reader tells all tags to roll a random number in the range of
zero to Q. That number is the tags slot or position in line.
 Assume Q=4 which means 16 slots

7
5
10
15
2
5
COMPANY CONFIDENTIAL
1
Slide 14
Tag Singulation
Slots
0
Looking at the 16 slots
 Empty slots are wasted time

1
1
2
2
3
4
5
6
7
Empty Slot
5
5
7
8
9
10
Tag in Slot
11
10
12
13
14
15
COMPANY CONFIDENTIAL
15
Slide 15
Tag Singulation
Once tag is read by the reader it remains quiet for the
rest of the singulation process
 If tag momentarily looses power it will reset and talk
again.
 This is very bad when trying to read a large number of
tags.
 Tags regularly loose power as they pass an antenna.
 Tag Persistence helps resolve this issue (Sessions)

COMPANY CONFIDENTIAL
Slide 16
Comments or Questions
COMPANY CONFIDENTIAL
Slide 17
Basic Reader Interface
COMPANY CONFIDENTIAL
Slide 18
BRI Protocol

Consists of the following
Command and Response
 Asynchronous events

BRI is not case sensitive unless you are calculating
checksums.
 Terminology

Carriage Return, CR
 Line Feed, LF
 <CRLF>

COMPANY CONFIDENTIAL
Slide 19
BRI Protocol

Sending command:
BRI_COMMAND + <CRLF>
 ATTRIB IDTRIES<CRLF>


Response:

ETX is: OK><CRLF>
ResponseLine<CRLF>ResponseLine<CRLF>…OK><CRLF>
 ATTIRB IDTRIES=1<CRLF>OK><CRLF>

COMPANY CONFIDENTIAL
Slide 20
BRI Protocol

Some other examples
Send: ATTRIB IDTRIES=B1<CRLF>
 Response: ERR<CRLF>OK><CRLF>
 Send: ATTRIB IDTRIES=1<CRLF>
 Response: OK><CRLF>

COMPANY CONFIDENTIAL
Slide 21
BRI Protocol

Asynchronous Event Messages
EVT:<Type> <Event Details><CRLF>
 For example



EVT:TAG H010203040506070809101112<CRLF>
Event messages are NOT followed by an OK><CRLF>
COMPANY CONFIDENTIAL
Slide 22
BRI Error Responses

If a command is invalid reader returns ERR
Typo, invalid parameters, missing keyword, etc
 ERR<CRLF>OK><CRLF>


Checksum error returns CKERR

CKERR<CRLF>OK><CRLF>
COMPANY CONFIDENTIAL
Slide 23
RF Module Events

All Platforms (depends on FW version)
EVT:TRIGGER ExampleTrigger GPIO 15
 EVT:RADIO DUTY_CYCLE TIMELEFT xxx
 EVT:TAG H112210101122334411221122
 EVT:THERMAL OVERTEMP <degrees>
 EVT:THERMAL NORMAL <degrees>


IF61


EVT:RESET
Handheld (IM4 based platforms)

EVT:BATTERY LOW
COMPANY CONFIDENTIAL
Slide 24
BRI
Reader
Module
Information
Commands
ATTRIBUTE
Commands
READ
Commands
WRITE
Commands
COMPANY CONFIDENTIAL
GPIO
Commands
ACCESS
Commands
Slide 25
Reader Module Information Commands

VER

Returns all version information
VER
IM5 RFID Reader Ver 9.39
Basic Reader Interface Version 3.12
FCC 915MHz CC014
Copyright (C) 2009 Intermec Technologies Corp.
OK>
COMPANY CONFIDENTIAL
Slide 26
Reader Module Information Commands
BRIVER
 Returns BRI version
 Basic Reader Interface Version S
 HWID

Returns serial and configuration number
 CN-000000
 SN-000000


HWREGION
Region setting (RF regulatory region)
 ETSI 302-208 865Mhz

COMPANY CONFIDENTIAL
Slide 27
Reader Module Information Commands

HWPROD
Hardware platform
 IM5, IM4


HWVER
Hardware version
 2B0


SWVER
Version of firmware running in the RF module
 6.33

COMPANY CONFIDENTIAL
Slide 28
Testing communication link

PING command

Returns OK><CRLF>
COMPANY CONFIDENTIAL
Slide 29
BRI ATTRIBUTES

Allow you to configure the reader.


Select antennas, set tag type, etc.
Not all attributes are available on all reader platforms

IF61 you cannot set baud rate, TTY, echo, or checksums.
We do add new attributes as we add more features to
the readers.
 When issuing attribute commands you must always
include the keyword ATTRIB.

COMPANY CONFIDENTIAL
Slide 30
ATTRIB Command Structure

To GET an attribute value:
ATTRIB <Name><CRLF>
 For example: ATTRIB IDTRIES<CRLF>
 Will return: IDTRIES=1<CRLF>OK><CRLF>


To SET an attribute value:
ATTRIB <Name> =<value><CRLF>
 For example: ATTRIB IDTRIES=2 <CRLF>
 Will return: OK><CRLF>

COMPANY CONFIDENTIAL
Slide 31
ATTRIB Command
The ATTRIB command will list all attributes available
on that reader platform.
 Not all attributes are available on all reader platforms.

COMPANY CONFIDENTIAL
Slide 32
List of ATTRIBUTES
Frequently Used Attributes













Lesser Used Attributes
ANTS=1
TAGTYPE=EPCC1G2
FIELDSTRENGTH=30DB,30DB,30DB,3
0DB
INITIALQ=4
IDTRIES=1
ANTTRIES=3
TIMEOUTMODE=OFF
IDTIMEOUT=100
ANTTIMEOUT=50
SESSION=1
SCHEDULEOPT=0
RDTRIES=3
WRTRIES=3














INITTRIES=1
NOTAGRPT=ON
IDREPORT=ON
CHKSUM=OFF
TTY=OFF
ECHO=OFF
XONXOFF=OFF
BAUD=115200
FIELDSEP=" "
DENSEREADERMODE=OFF
LOCKTRIES=3
SELTRIES=1
UNSELTRIES=1
RPTTIMEOUT=0
COMPANY CONFIDENTIAL
Slide 33
Communication Attributes
Serial readers only.
 Cannot be set when using the IDL drivers.
 ATTRIB BAUD


Default value is 115200.
ATTRIB TTY=ON/OFF
 ATTRIB ECHO=ON/OFF


For applications, its best to leave this OFF.
COMPANY CONFIDENTIAL
Slide 34
Communication Attributes

ATTRIB XONXOFF=ON/OFF


Default is OFF
ATTRIB CHKSUM=ON/OFF
To disable checksums use the following command:
 ATTRIB CHKSUM=OFFC9
 Where C9 is the checksum for that command.
 Checksums ARE case sensitive so this command must
be entered in upper case as shown above!

COMPANY CONFIDENTIAL
Slide 35
Report Attribute Settings

ATTRIB IDREPORT=ON


Reader will return the ECP ID for each tag read or written to.
Default is ON.
attrib idreport=off
OK>
r ant
1
OK>
attrib idreport=on
OK>
r ant
H000000000000000000000000 1
OK>
COMPANY CONFIDENTIAL
Slide 36
Report Attribute Settings

ATTRIB NOTAGRPT=ON
Returns NOTAG message when no tag is found.
 Default is ON.

r
NOTAG
OK>
attrib notagrpt=off
OK>
r
OK>
COMPANY CONFIDENTIAL
Slide 37
Attribute Settings: TAGTYPE
Can have multiple tag types separated by a comma
 ATTRIB TAGTYPE=EPCC1G2,ISO6BG2
 Multiple tag types slows down the reader.
 ATTRIB TAGTYPE=MIXED does NOT enable
epcc1g2 tag type. It is only enables ISO tag types.

COMPANY CONFIDENTIAL
Slide 38
Attribute Settings: FIELDSTRENGTH
Sets the RF power level per port.
 Reader controls max and min values so you cannot
violate your local regulations
 Min value = 15 dbi
 Max value = country specific
 Can be set in DB



ATTRIB FIELDSTRENGTH=30db,30db,30db,30db
Can be set as a % of max strength or in DB

ATTRIB FIELDSTRENGTH=100,100,100,100
COMPANY CONFIDENTIAL
Slide 39
Attribute Settings

ATTRIB ANTS


ATTRIB ANTS=1,2,3,4


Sets all four antennas as active
ATTRIB ANTS=4


Gets/Sets active antennas
Sets antenna 4 as active
ATTRIB ANTS=2,4

Sets antennas 2 and 4 as active
COMPANY CONFIDENTIAL
Slide 40
Attribute Settings: INITIALQ
Gets/Sets the initial number of tag slots used in the
anti-collision algorithm.
 # of slots = 2^Q
 Once a collision is detected the reader will
automatically adjust the Q value upward.
 For best performance you want to minimize the
number of empty slots.

COMPANY CONFIDENTIAL
Slide 41
Attribute Settings: INITIALQ

ATTRIB INITIALQ = 4
INITIALQ=4 means
 16 slots are created.


INITIALQ=1
means 1 slot is created.
 Only good for one tag.


INITIALQ=0 means no slots are created.
All tags respond immediately.
 Only good for one tag.

COMPANY CONFIDENTIAL
Slide 42
Attribute Settings: RDTRIES

Is used when reading fields
READ HEX(1:4,2)
 READ HEX(3:0,16)

Not used when reading just the EPCID
 ATTRIB RDTRIES=3

COMPANY CONFIDENTIAL
Slide 43
Attribute Settings: WRTRIES

Is used when writing fields
WRITE HEX(1:4,2)=H0102
 WRITE HEX(3:0,12)=0102030405060708090A0B


ATTRIB WRTRIES=3
COMPANY CONFIDENTIAL
Slide 44
Attribute Settings: SESSION

ATTRIB SESSION=<value>


Sets tag persistence
What is persistence?
When a tag momentarily loses power during the tag
reading process, will it remember if its already been read?
 Persistence sets the length of time a tag will remember its
been read.


Critical when reading a large number of tags
COMPANY CONFIDENTIAL
Slide 45
Attribute Settings: SESSION

Session = 0
No persistence
 Best for reading single tags
 Best for making tags/second measurements


Session = 1
Max 5 seconds persistence.
 With Intermec readers we have found session one provides the
most consistent read rates when reading large numbers of tags.


Session = 2 and Session = 3
Share the same persistence features.
 Min persistence time of 2 seconds.

COMPANY CONFIDENTIAL
Slide 46
Attribute Settings: TIMEOUTMODE
ATTRIB TIMEOUTMODE=ON/OFF
 Enables the use of timeouts instead of tries.
 Attrib SCHEDOPT=1 overrides this attribute.
 Timeouts are the preferred mode.

COMPANY CONFIDENTIAL
Slide 47
Attribute Settings: IDTIMEOUT
ATTRIB IDTIMEOUT=<value>
 Time defined in milliseconds
 Total time the reader will try to read tags.
 This time is an approximate value.
 ATTRIB IDTIMEOUT=2000


Reader will read tags for 2 seconds.
COMPANY CONFIDENTIAL
Slide 48
Attribute Settings: ANTTIMEOUT
ATTRIB ANTTIMEOUT=<value>
 Time defined in milliseconds
 Time the reader will try to read tags on an antenna
before switching to the next antenna.
 After time expires the reader will switch to the next
antenna.
 ANTTIMEOUT cannot exceed IDTIMEOUT


Idtimeout=1000 and anttimeout=2000: means reader will
read for a total of 1 second on the first antenna.
COMPANY CONFIDENTIAL
Slide 49
Attribute Settings: IDTRIES
ATTRIB IDTRIES=<value>
 Sets the number of times to cycle through the
antennas.
 No time associated with tries, the more tags in the field
the longer the read will take.
 I recommend IDTRIES=1

COMPANY CONFIDENTIAL
Slide 50
Attribute Settings: ANTTRIES
ATTRIB ANTTRIES=<value>
 Sets the number of inventory rounds to run before
switching antennas.
 I recommend ANTTRIES=1

COMPANY CONFIDENTIAL
Slide 51
Attribute Settings: INITTRIES
ATTRIB INITTRIES=<value>
 Sets the number of times to cycle through IDTRIES or
IDTIMEOUT.
 Functions as a multiplier

INITITRIES x IDTRIES
 INITTRIES x IDTIMEOUT

I recommend INITTRIES=1
 NO advantage to setting it higher than one.

COMPANY CONFIDENTIAL
Slide 52
Tries vs. Timeouts ?????
Depends on what you are trying to do.
 Timeouts are better when you are reading a large
number of tags.
 Will talk about this more later.
 For EPCC1G2 I’ve found that TRIES don’t matter
much, just set them to ONE.

IDTRIES=1
 ANTTRIES=1
 INITTRIES=1

COMPANY CONFIDENTIAL
Slide 53
Attribute Settings: SCHEDOPT
ATTRIB SCHEDOPT=0/1
 Controls how the reader cycles through the antennas.
 Originally added to make readers more responsive to
commands while reading very large groups of tags
when in continuous read mode.
 More important for all readers EXCEPT the IF61.

COMPANY CONFIDENTIAL
Slide 54
Attribute Settings: SCHEDOPT

SCHEDOPT = 0
Disabled
 Reader will use attributes as defined.

COMPANY CONFIDENTIAL
Slide 55
Attribute Settings: SCHEDOPT

SCHEDOPT = 1
Enabled
 During continuous reads, reader will check for incoming
commands and execute them.
 Makes reader more responsive when reading a large
number of tags.

COMPANY CONFIDENTIAL
Slide 56
Attribute Settings: SCHEDOPT

SCHEDOPT = 1
Overrides ATTRIB TIMEOUTMODE=OFF
 Will use IDTIMEOUT, ANTTIMEOUT if they are non-zero.


Disable timeouts by setting one or both to zero
If IDTIMEOUT=0 will uses IDTRIES
 If ANTTIMEOUT=0 will use ANTTRIES
 I recommend setting ANTTIMEOUT=0 and ANTTRIES=1

COMPANY CONFIDENTIAL
Slide 57
CASE 1: ATTRIB SCHEDOPT=0

Settings
TIMEOUTMODE=ON
 IDTIMEOUT=0
 ANTTIMEOUT=0


READ….

Do nothing
COMPANY CONFIDENTIAL
Slide 58
CASE 2: ATTRIB SCHEDOPT=0

Settings
TIMEOUTMODE=ON
 IDTIMEOUT != 0
 ANTTIMEOUT=0


READ….
while (IDTIMEOUT not elapsed) {
foreach antenna {
//execute one inventory round
}
}
COMPANY CONFIDENTIAL
Slide 59
CASE 3: ATTRIB SCHEDOPT=0

Settings
TIMEOUTMODE=ON
 IDTIMEOUT=0
 ANTTIMEOUT != 0


READ…
foreach antenna {
while (ANTTIMEOUT not elapsed) {
//execute one inventory round
}
}
COMPANY CONFIDENTIAL
Slide 60
CASE 4: ATTRIB SCHEDOPT=0

Settings
TIMEOUTMODE=ON
 IDTIMEOUT < ANTTIMEOUT
 ANTTIMEOUT != 0


READ…
foreach antenna {
while (IDTIMEOUT not elapsed) {
//execute one inventory round
}
}
COMPANY CONFIDENTIAL
Slide 61
CASE 5: ATTRIB SCHEDOPT=0

Settings




TIMEOUTMODE=ON
IDTIMEOUT>=ANTTIMEOUT
ANTTIMEOUT != 0
READ…
while (IDTIMEOUT not elapsed) {
foreach antenna {
while (ANTTIMEOUT not elapsed) {
//execute one inventory round
if (tag found) restart ANTTIMEOUT timer
if (IDTIMEOUT timer elapsed) break;
}
if (IDTIMEOUT timer elapsed) break;
}
}
COMPANY CONFIDENTIAL
Slide 62
CASE 6: ATTRIB SCHEDOPT=1
If (IDTIMEOUT != 0) {
while (IDTIMEOUT not elapsed) {
foreach antenna {
If (ANTTIMEOUT != 0) {
While (!ANTTIMEOUT) {
//Execute one inventory round
}
} else {
Foreach ANTTRY {
//Execute one inventory round
}
}
}
}
COMPANY CONFIDENTIAL
Slide 63
CASE 7: ATTRIB SCHEDOPT=1
If (IDTIMEOUT == 0 && IDTRIES>0) {
foreach IDTRY {
foreach antenna {
If (ANTTIMEOUT != 0) {
While (!ANTTIMEOUT) {
//Execute one inventory round
}
} else {
Foreach ANTTRY {
//Execute one inventory round
}
}
}
}
COMPANY CONFIDENTIAL
Slide 64
Data Field Definitions




Optional fields of tag specific data that can be added to READ and
WRITE commands.
Will be returned with the EPCID.
The following fields are READ ONLY:
ANT



COUNT


Antenna that tag was read on.
Values: 1,2,3,4
Number of times tag was read.
TIME


Time stamp of when tag was first read in milliseconds.
Not a real time but an internal timer that is reset when reader is powered up.
COMPANY CONFIDENTIAL
Slide 65
Data Field Definitions

TAGID


EPCID


Memory Bank 1
TAGTYPE


Memory bank 2
Returns the tag type, EPCID, ISO6BG1, ISO6BG2…etc.
RSSI
Return Signal Strength Intensity
 Range: -128 dbm to 0 dbm.


Example

READ ANT COUNT RSSI…
COMPANY CONFIDENTIAL
Slide 66
Comments or Questions
COMPANY CONFIDENTIAL
Slide 67
Reading Tags
COMPANY CONFIDENTIAL
Slide 68
Reading Tags
READ, RD, R
 4 read modes to choose from

REPORT=DIRECT
 REPORT=NO
 REPORT=EVENT
 REPORT=EVENTALL

COMPANY CONFIDENTIAL
Slide 69
Read Mode: REPORT=DIRECT
Good for reading small number of tags
 Good for mapping RF Field
 Returns tag list after command completes
 Length of read depends on attrib settings:


IDTRIES, ANTTRIES, IDTIMEOUT, ANTTIMEOUT
COMPANY CONFIDENTIAL
Slide 70
Read Mode: REPORT=DIRECT Examples

Standard Read
READ ANT COUNT …
 READ ANT COUNT …REPORT=DIRECT


Read with filter


Read where HEX(1:4,2)=H1111
Read with filter and fields

Read COUNT where HEX(1:4,2)=H1111 TIME ANT
COMPANY CONFIDENTIAL
Slide 71
How Tries Work: READ REPORT=DIRECT
Antenna 1
InitTries=1
Antenna 1
Antenna 1
IDTries=1
AntTries=1
IDTries=2
AntTries=1
Antenna 2
Send TAG RESET
AntTries=2
AntTries=2
AntTries=3
AntTries=3
ATTRIB ANTS=1,2
ATTRIB INITRIES=1
ATTRIB IDTRIES=2
Antenna 2
Antenna 2
ATTRIB ANTTRIES=3
AntTries=1
AntTries=1
AntTries=2
AntTries=2
AntTries=3
AntTries=3
COMPANY CONFIDENTIAL
STOP
Slide 72
How Timeouts & Tries Work: READ
REPORT=DIRECT
Send TAG RESET
Antenna 1
Antenna 2
InitTries=1
IDTIMEOUT=1000
READ ON ANT 1
READ ON ANT 2
Antenna 3
ATTRIB ANTS=1,2,3
ATTRIB INITRIES=1
READ ON ANT 3
ATTRIB IDTIMEOUT=1000
ATTRIB ANTTRIES=1
COMPANY CONFIDENTIAL
Slide 73
Read Mode: REPORT=NO
Good for reading large number of tags.
 Good for seeing how many times a tag can be read.
 Must POLL for tag list.


READ POLL
Provides best reading performance.
 You must STOP the read when you are finished.

READ STOP
 R STOP
 RD STOP

COMPANY CONFIDENTIAL
Slide 74
Read Mode: REPORT=NO Examples

Standard Read


Read with filter


READ ANT COUNT …REPORT=NO
Read where HEX(1:4,2)=H1111 REPORT=NO
Read with filter and fields

Read COUNT where HEX(1:4,2)=H1111 REPORT=NO
COMPANY CONFIDENTIAL
Slide 75
Read Mode: REPORT=NO

READ POLL
Returns tag list from reader.
 Clears tag list in reader
 Must be sent BEFORE sending READ STOP.
 Can be sent as often as you want while the reader is
reading.

COMPANY CONFIDENTIAL
Slide 76
How Tries Work: READ REPORT=NO,EVENT
Antenna 1
InitTries=1
Antenna 1
Antenna 1
IDTries=1
AntTries=1
IDTries=2
AntTries=1
Antenna 2
Send TAG RESET
AntTries=2
AntTries=2
ATTRIB ANTS=1,2
AntTries=3
AntTries=3
ATTRIB INITRIES=1
ATTRIB IDTRIES=2
Antenna 2
Antenna 2
ATTRIB ANTTRIES=3
AntTries=1
AntTries=1
AntTries=2
AntTries=2
AntTries=3
AntTries=3
COMPANY CONFIDENTIAL
Slide 77
How Timeouts & Tries Work: READ REPORT=NO or
EVENT
Send TAG RESET
Antenna 1
Antenna 2
InitTries=1
IDTIMEOUT=1000
READ ON ANT 1
READ ON ANT 2
Antenna 3
ATTRIB ANTS=1,2,3
ATTRIB INITRIES=1
READ ON ANT 3
ATTRIB IDTIMEOUT=1000
ATTRIB ANTTRIES=1
COMPANY CONFIDENTIAL
Slide 78
Read Mode: REPORT=EVENT
Good for reading large number of tags.
 Tags will be returned asynchronously as events:


EVT:TAG H0102030405060708090A0B
Tags will be returned one time only when first seen.
 You must STOP the read when you are finished.
 Only on IF61 Release 2 will the performance equal
REPORT=NO

COMPANY CONFIDENTIAL
Slide 79
Read Mode: REPORT=EVENT Examples

Standard Read


Read with filter


READ ANT COUNT …REPORT=EVENT
Read where HEX(1:4,2)=H1111 REPORT=EVENT
Read with filter and fields

R COUNT where HEX(1:4,2)=H1111 REPORT=EVENT
COMPANY CONFIDENTIAL
Slide 80
Read Mode: REPORT=EVENTALL
Tags will be returned each time they are seen.
 Tags will be returned as asynchronous events


EVT:TAG H0102030405060708090A0B
Good for testing purposes.
 Warning, you can get over whelmed by tags.


NOT good for reading large number of tags.
COMPANY CONFIDENTIAL
Slide 81
Read Mode: REPORT=EVENTALL Examples

Standard Read


Read with filter


READ ANT COUNT …REPORT=EVENTALL
Read where HEX(1:4,2)=H1111 REPORT=EVENTALL
Read with filter and fields

R COUNT where HEX(1:4,2)=H1111 REPORT=EVENTALL
COMPANY CONFIDENTIAL
Slide 82
Accessing Tag Memory
What if you want to read/write memory other than the
EPC code?
 Field Types

TAGID
 HEX
 String (STR)
 Bit
 Integer (INT)

COMPANY CONFIDENTIAL
Slide 83
Accessing Tag Memory

TAGID refers to memory bank 2
Typically read only (locked by manufacturer).
 Can be 4 bytes or 8 bytes long
 READ TAGID
 H0102030405060708090A0B H01020304
 H0102030405060708090A0B H0102030405060708

COMPANY CONFIDENTIAL
Slide 84
Accessing Tag Memory

HEX(Memory Bank:Start Address,Length)

READ HEX(3:0,7)


READ HEX(3:0,7) HEX(2:0,2)


H0102030405060708090A0B H01020304050607
H0102030405060708090A0B H01020304050607 H0102
READ HEX(3:0,7) HEX(2:0,2) ANT

H0102030405060708090A0B H01020304050607 H0102 4
COMPANY CONFIDENTIAL
Slide 85
Accessing Tag Memory

String(Memory Bank,Start Address,Length)

READ STR(3:0,10)


READ STR (3:0,5) STR(3:5,5)


H0102030405060708090A0B HELLOWORLD
H0102030405060708090A0B HELLO WORLD
READ STR (3:0,10) HEX(2:0,2) ANT

H0102030405060708090A0B HELLOWORLD H0102 4
COMPANY CONFIDENTIAL
Slide 86
Accessing Tag Memory

Bit(Memory Bank,Start Bit,Length in Bits)
Can only be used in a WHERE clause.
 Cannot be used for reading or writing data.
 r where bit(1:127,1)=B0

COMPANY CONFIDENTIAL
Slide 87
Accessing Tag Memory

Read all tags

r
H11223344486B1F95F8D40002
 H11223344486B1F95F8D40003
 H11223344486B1F95F8D40001
 H11223344486B1F95F8D40004


Read only odd EPC IDs…
r where bit(1:127,1)=B1
 H11223344486B1F95F8D40003
 H11223344486B1F95F8D40001

COMPANY CONFIDENTIAL
Slide 88
Accessing Tag Memory

Read only even EPC IDs…


r where bit(1:127,1)=B0
H11223344486B1F95F8D40002
H11223344486B1F95F8D40004
Read only even EPC IDs…

r where bit(1:127,1)=B0
H11223344486B1F95F8D40002
H11223344486B1F95F8D40004
COMPANY CONFIDENTIAL
Slide 89
Accessing Tag Memory

Read only EPC IDs that end with the last two bits
set…


r where bit(1:126,2)=b11
H11223344486B1F95F8D40003
Read only EPC IDs that end in 4…

r where bit(1:124,4)=b0100
H11223344486B1F95F8D40004
COMPANY CONFIDENTIAL
Slide 90
Accessing Tag Memory

Integer(Memory Bank,Start Address,Length)
1 byte: 0 to 255
 2 byte: 0 to 65,535
 3 byte: 0 to 16,777,215
 4 byte: 0 to 4,294,967,295


READ INT(1:6,1)

H0102030405060708090A0B 5
COMPANY CONFIDENTIAL
Slide 91
Comments or Questions
COMPANY CONFIDENTIAL
Slide 92
Writing to Tags
COMPANY CONFIDENTIAL
Slide 93
Writing to Tags
WRITE, WR, W
 Must write even number of bytes (2,4,6,…)
 Must start write on even memory boundaries (0,2,4,…)
 Writes all tags found!
 Each field written will return a status message.

COMPANY CONFIDENTIAL
Slide 94
Writing to Tags
Write command can return 6 possible messages.
 <EPCID> WROK



<EPCID> WRERR


Write failed
ERR


Write succeeded
Invalid command format (typo?)
NOTTAG

No tags were found
COMPANY CONFIDENTIAL
Slide 95
Writing to Tags

<EPCID> MEMOVRN


This error indicates the address used in the write
command was not valid.
<EPCID> PVERR
This error indicates a missing or invalid password was
used.
 Memory is protected and a password must be used with
the write.


<EPCID> PWERR

Tag does not enough power to complete the write.
COMPANY CONFIDENTIAL
Slide 96
Writing to Tags

READ


WRITE EPCID=H112233445566778899AABB


H0102030405060708090A0B
H0102030405060708090A0B WROK<CRLF>OK><CRLF>
W HEX(1:12,2)=H0101 STR(3:0,4)=”GOOD” INT(3:6,1)=7
H1234567890ABCDEF WROK WROK
 H1234567890ABAAAA WROK WRERR
 H1234567890ABBBBB PVERR PVERR

COMPANY CONFIDENTIAL
Slide 97
Writing to Tags
When programming EPCID’s make sure there is only
one tag present or they will all be programmed with
the SAME EPCID.
 If necessary use a WHERE clause to singulate a tag
for reading or writing…


W HEX(1:4,2)=H0102 WHERE HEX(1:10,2)=H0102
COMPANY CONFIDENTIAL
Slide 98
Reading and Writing Large Amounts of Data
The larger the amount of data you want to read/write,
the more likely it will fail (air protocol issues)
 Best to break the large field up into small fields
 If one small field fails you only have to READ/WRITE
that field, not ALL of the data.
 Much more efficient overall.

COMPANY CONFIDENTIAL
Slide 99
Reading and Writing Large Amounts of Data

READ HEX(3:0,64)
H0102030405060708090A0B RDERR
 If this fails, you must reread all 64 bytes.
 READ HEX(3:0,16) HEX(3:16,16) HEX(3:32,16) HEX(3:48,16)
 H0102030405060708090A0B H<> RDERR H<> H<>
 Only need to reread 16 bytes of data

COMPANY CONFIDENTIAL
Slide 100
Comments or Questions
COMPANY CONFIDENTIAL
Slide 101
GPIO and TRIGGERS
(General Purpose Input Output)
COMPANY CONFIDENTIAL
Slide 102
General Purpose Input Output

GPI (General Purpose Inputs)
There are 4 inputs
 Attach motion sensors
 Use to start and stop reading/writing


GPO (General Purpose Outputs)
There are 4 outputs
 Attach light bars, buzzers
 Send signal to start/stop conveyors

COMPANY CONFIDENTIAL
Slide 103
General Purpose Input Output
READGPIO
 Returns the current GPI states as a decimal value
representing the GPI mask
 READGPIO
 15<CRLF>OK><CRLF>
 If you need to monitor the GPI states its better to use a
trigger.

COMPANY CONFIDENTIAL
Slide 104
General Purpose Input Output
WRITEGPIO=<value>
 Sets the GPO state
 Defined as a decimal value representing the binary
mask

WRITEGPIO=15
 WRITEGPIO=8


Used to turn on light bars, buzzers, etc.
COMPANY CONFIDENTIAL
Slide 105
Triggers
Creates, displays, and deletes trigger events that are
based on the GPI states.
 You can create up to 10 triggers.
 Used by the BRI to create asynchronous event
messages.
 Can be used in conjunction with motion sensors to
START and STOP reading/writing processes.

COMPANY CONFIDENTIAL
Slide 106
Triggers

Syntax


TRIGGER RESET


TRIGGER [RESET|DELETEALL| <“NAME”>
<GPIO|GPIOEDGE> <MASK> <VALUE> FILTER
<DELAY> [ACTION “MACRO_NAME”]]
Deletes/clears all triggers, trigger events.
TRIGGER DELETEALL
Deletes all triggers.
 Does not remove trigger events.

COMPANY CONFIDENTIAL
Slide 107
Triggers

<“Name”>
Is the name the user wants to identify the trigger by.
 Must be in quotes.

“mytrig_On”
 “motion_OFF”
 “A”
 “B”

COMPANY CONFIDENTIAL
Slide 108
Triggers

GPIO
Indicates level type trigger
 Trigger “mytrigger” gpio 1 1 filter 0
 Fires whenever the level is met
 Fires continuously
 Reader will only send trigger event when you send
TRIGGERREADY or TRIGGERWAIT
 Avoid using this type!

COMPANY CONFIDENTIAL
Slide 109
Triggers

GPIOEDGE
Indicates edge type trigger
 Trigger “mytrigger” gpioedge 1 1 filter 0
 Fires only once, when state is met.
 Use this type of trigger!
 Do not need to use TRIGGERREADY or TRIGGERWAIT

COMPANY CONFIDENTIAL
Slide 110
Triggers

<MASK> <VALUE>
<Mask> is AND’ed with actual GPI state mask
 If that result equals the <VALUE> then the trigger fires.
 Integer value representing Binary masking of GPI’s.
 GPI 1 = 1110 = decimal mask 14
 GPI 2 = 1101 = decimal mask 13
 GPI 3 = 1011 = decimal mask 11
 GPI 4 = 0111 = decimal mask 7

COMPANY CONFIDENTIAL
Slide 111
Triggers

<MASK> <VALUE>
Warning based on wiring of GPI’s and GPO’s the binary
masks may be reversed.
 Also valid for IF61, IF5 and IF30
 GPI 1 = 0001 = decimal mask 1
 GPI 2 = 0010 = decimal mask 2
 GPI 3 = 0100 = decimal mask 4
 GPI 4 = 1000 = decimal mask 8

COMPANY CONFIDENTIAL
Slide 112
Triggers

FILTER <DELAY>
Used with level (GPIO) triggers
 Determines how long the reader will hold that state on.
 For GPIOEDGE triggers set this to ZERO


[ACTION “MACRO_NAME”]]
Allows the trigger to call a user defined macro.
 Macro name is in quotes.
 More on this in macro section

COMPANY CONFIDENTIAL
Slide 113
Macros

SET MyMacroName = “R ANT COUNT”


SET


With no parameters will display all macros in memory
SET MyMacroName=


Creates macro
Deletes that macro
PRINT $<NAME>

Displays macro
COMPANY CONFIDENTIAL
Slide 114
Macros
SET MyMacroFilter=“WHERE HEX(1:4,2)=H0102”
 $MyMacroName



Will execute that macro.
READ $MyMacroFilter
Will execute a READ using the filter defined in the macro
 READ WHERE HEX(1:4,2)=H0102

COMPANY CONFIDENTIAL
Slide 115
Macros


WRITE hex(1:6,4)=h01020304 $MyMacroFilter

Will execute a WRITE using the filter defined in the macro

WRITE hex(1:6,4)=h01020304 WHERE HEX(1:4,2)=H0102
Multi command macros
Use semi-colon to separate commands
 Set mymacro=“attrib ants=1;read;attrib ants=2,read”

COMPANY CONFIDENTIAL
Slide 116
Triggers with ACTION Macros

Macros can be called from triggers using the ACTION
keyword
Set mymacro=“read ant count time”
 Trigger “mytrigger” gpioedge 1 1 filter 0 ACTION “mymacro”
 Whenever this trigger fires the macro mymacro will be executed.

COMPANY CONFIDENTIAL
Slide 117
Comments or Questions
COMPANY CONFIDENTIAL
Slide 118
EPCC1G2 Memory Map
Bank 3
UID Optional ? Bytes
Bank 2
TID 4+ Bytes (not necessarily unique)
Bank 1
Header info Bytes 0-3
EPC Code Bytes 4-15
Bank 0
Kill Password 4 Bytes
Access Password 4 Bytes
COMPANY CONFIDENTIAL
Slide 119
Command: KILLTAG

Permanently disables tag

Tag will not respond to any reader!
KILLTAG [TAGTYPE=<tagtype list>] [WHERE <data
condition>] [PASSWORD=<kill>]
 You must program KILL password and protect it
before you can use the KILLTAG command
 Kill password cannot be nulls (0x00)

COMPANY CONFIDENTIAL
Slide 120
Command: KILLTAG
W HEX(0;0,4)=H01020304
 PROTECT ON HEX(0:0,4) PASSWORD=H01020304
 KILLTAG WHERE PASSWORD=H01020304
 KILLTAG WHERE
EPCID=H3003000000FF8600000D0569
PASSWORD=H01020304

COMPANY CONFIDENTIAL
Slide 121
Command: ERASE
Allows you to perform a block erase of an EPCC1G2
tag.
 ERASE [DATA FIELD] [READ FIELD] [TAGTYPE =
<tag type list>] [WHERE <data condition>]
[PASSWORD=<“access_password”>]

COMPANY CONFIDENTIAL
Slide 122
Command: ERASE

ERASE HEX(1:4,6)
ERASEOK<CRLF>OK><CRLF>
 ERASEERR<CRLF>OK><CRLF>
 PVERR<CRLF>OK><CRLF>
 PWERR<CRLF>OK><CRLF>

COMPANY CONFIDENTIAL
Slide 123
ACCESS Password
Access passwords control WRITE access to memory
banks.
 You must program a valid, non null access password
before you can PROTECT or LOCK a tag.
 Access password is located at membank 0, bytes 4-8.
 You must PROTECT the password before it becomes
active.

COMPANY CONFIDENTIAL
Slide 124
ACCESS Password

Reading Access password

R HEX(0,4,4)
reads the access password if its not protected
 Returns PVERR if protected


R HEX(0,4,4) password=h11111111


reads the access password if it is protected
Set Access Password

W HEX(0:4,4)=H11111111
COMPANY CONFIDENTIAL
Slide 125
Command: PROTECT ON
“Locks” entire memory bank so that it cannot be
written to with out the proper password.
 When passwords are protected you cannot read or
write them with out the password.
 Cannot use keywords such as



EPCID, TAGID
For example the following will NOT work
PROTECT ON EPCID PASSWORD=H11111111
 Returns ERR

COMPANY CONFIDENTIAL
Slide 126
Command: PROTECT ON

Two types of protection
Reversible
 Permanent


Protect Access Password
You must protect Access password before it becomes
active.
 PROTECT ON HEX(0:4,4) PASSWORD=H11111111

COMPANY CONFIDENTIAL
Slide 127
Command: PROTECT ON

Protect Memory Bank 1, EPCID
PROTECT ON HEX(1:4,2) PASSWORD=H11111111
 Now you can read EPC ID but not write to it.
 Entire memory bank is protected

COMPANY CONFIDENTIAL
Slide 128
Command: PROTECT OFF

Setting PROTECT OFF
PROTECT OFF HEX(1:4,2) PASSWORD=H11111111
 Now you can write EPC ID.

COMPANY CONFIDENTIAL
Slide 129
Command: PROTECT Permanent
Is irreversible!
 Protecting ACCESS password

PROTECT ON PERMANENT HEX(0:4,4)
PASSWORD=H11111111
 Password cannot be unprotected.

COMPANY CONFIDENTIAL
Slide 130
Command: PROTECT Permanent
You can also unlock a memory bank permanently so
that it can never be protected
 PROTECT OFF PERMANENT HEX(0:4,4)
PASSWORD=H11111111



Password cannot be protected.
PROTECT OFF PERMANENT HEX(1:4,2)
PASSWORD=H11111111

EPC bank cannot be protected.
COMPANY CONFIDENTIAL
Slide 131
Locking Tags

LOCK Command
Valid for ISO 18000-6B tags.
 To lock or protect EPCglobal Gen 2 tags use PROTECT
 Irreversible
 LOCK STRING(18,5)=”HELLO”
 Successful lock



Locking error


LCKOK<CRLF>
LCKERR<CRLF>
Data already locked

PVERR<CRLF>
Always write data first, verify its correct, then LOCK.
 ATTRIB LOCKTRIES

COMPANY CONFIDENTIAL
Slide 132
Other Useful Commands
COMPANY CONFIDENTIAL
Slide 133
Other Useful Commands
REPEAT <value>
 Will repeat the last READ or WRITE command
<value> number of times
 Avoid using this in an application
 READ ANT COUNT TIME



H0102030405060708090A0B<CRLF>OK><CRLF>
REPEAT 2
H0102030405060708090A0B<CRLF>OK><CRLF>
 H0102030405060708090A0B<CRLF>OK><CRLF>

COMPANY CONFIDENTIAL
Slide 134
Other Useful Commands

RESET


Performs a warm boot of the reader module.
FACDFLT

Restores factory default settings.
COMPANY CONFIDENTIAL
Slide 135
Comments or Questions
COMPANY CONFIDENTIAL
Slide 136