.wr Write transponder Command

This command tries to write data to any transponder that meets the select criteria. It will return an error if no transponder is found. For each transponder the number of words written follows the WW: response header.

Android	iOS	.NET
link coming soon	link coming soon	WriteTransponderCommand

Parameters

Identifier	Values	Description
-al	on/off	Perform an alert after a successful write using the current alert Parameters from the .al command
-ap	xxxxxxxx	Access password, where xxxxxxxx is an 8 character ASCII Hex value
-c	on/off	Include EPC checksum response
-da	xxxx..zzzz	The data to write in 4 character ASCII Hex words. Up to a maximum of 32 words
-db	epc/tid/usr/res	Data bank to write to
-dl	xx	Length in words of the data to write, where xx is a 2 character ASCII Hex value up to a maximum of 20hex
-do	xxxx	Data bank offset, this is the offset, in 16 bit words, from the start of the block to where the data will be written, where xxxx is a 4 character ASCII Hex value
-dt	on/off	Include date time response
-e	on/off	Include EPC PC information response
-io	on/off	Inventory only, if set to on then no select will be performed before the inventory round phase is started
-ix	on/off	Index number each transponder response
-n		No action, just set the parameters
-o	nn	Output power in dBm, where nn is in the range 10 to 29
-p		List the parameter and their current values
-ql	all/nsl/sl	query Select
-qm	n	QT mode
-qs	s0,s1,s2,s3	query Session
-qt	a/b	query Target
-qv	nn	Q value (0..15)
-r	on/off	Include transponder RSSI response
-sa	n	Select action
-sb	epc/tid/usr	Bank to use for the select mask
-sd	xx..zz	Select mask data in 2 character ASCII Hex bytes padded to ensure full bytes, up to a maximum of 32 bytes.
-sl	xx	Length in bits of the select mask, where xx is a 2 character ASCII Hex value
-so	xxxx	Number of bits from the start of the block to the start of the select mask, where xxxx is a 4 character ASCII Hex value
-st	s0,s1,s2,s3,sl	Select target
-wm	s/b	Set the Write Mode to either single or block. Block mode is not supported by all transponders
-wx	a/1/2	Impinj Block Write Mode extension. Auto, Force 1 or Force 2 block write. Unless the transponder population is known, use Auto. This option is only valid if wm=b
-x		Reset the parameters to defaults

Parameter detail

-al

Perform an alert after a successful write using the current alert Parameters from the .al command

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	2
Default Value	on

-ap

Access password, where xxxxxxxx is an 8 character ASCII Hex value

Type	HEX
Value	xxxxxxxx
Range	8 Hex digits
Order In Interpretation	25
Default Value	00000000

-c

Include EPC checksum response

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	3
Default Value	off

-da

The data to write in 4 character ASCII Hex words. Up to a maximum of 32 words

Type	HEX
Value	xxxx..zzzz
Range	integer numberof HEX words
Order In Interpretation	22
Default Value

-db

Data bank to write to

Type	Enum
Value	epc/tid/usr/res
Range	epc/tid/usr/res
Order In Interpretation	23
Default Value	usr

-dl

Length in words of the data to write, where xx is a 2 character ASCII Hex value up to a maximum of 20hex

Type	HEX
Value	xx
Range	2 Hex digits
Order In Interpretation	21
Default Value	00

-do

Data bank offset, this is the offset, in 16 bit words, from the start of the block to where the data will be written, where xxxx is a 4 character ASCII Hex value

Type	HEX
Value	xxxx
Range	4 Hex digits
Order In Interpretation	24
Default Value	0000

-dt

Include date time response

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	6
Default Value	off

-e

Include EPC PC information response

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	4
Default Value	off

-io

Inventory only, if set to on then no select will be performed before the inventory round phase is started

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	14
Default Value	off

-ix

Index number each transponder response

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	8
Default Value	off

-n

No action, just set the parameters

Type	Switch
Value
Range
Order In Interpretation	29

-o

Output power in dBm, where nn is in the range 10 to 29

Type	Output power
Value	nn
Range
Order In Interpretation	13
Default Value	29

-p

List the parameter and their current values

Type	Switch
Value
Range
Order In Interpretation	28

-ql

query Select

Type	Enum
Value	all/nsl/sl
Range	all/nsl/sl
Order In Interpretation	17
Default Value	all

-qm

QT mode

QT mode n =	Description
0	Standard write
1	Write to private memory
2	Write to private memory short range
3	Write the QT control word with data –da xxxx

Type	Numeric
Value	n
Range
Order In Interpretation	7
Default Value	0

-qs

query Session

Type	Enum
Value	s0,s1,s2,s3
Range	s0/s1/s2/s3
Order In Interpretation	18
Default Value	s2

-qt

query Target

Type	Enum
Value	a/b
Range	a/b
Order In Interpretation	19
Default Value	b

-qv

Q value (0..15)

Type	Output power
Value	nn
Range
Order In Interpretation	20
Default Value	4

-r

Include transponder RSSI response

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	5
Default Value	off

-sa

Select action

Parameter n=	Matching Action		Non Matching Action
Parameter n=	SL Flag	Session Flag	SL Flag	Session Flag
0	assert	Set A	deassert	Set B
1	assert	Set A	nothing	nothing
2	nothing	nothing	deassert	Set B
3	toggle	toggle	nothing	nothing
4	deassert	Set B	assert	Set A
5	deassert	Set B	nothing	nothing
6	nothing	nothing	assert	Set A
7	nothing	nothing	toggle	toggle

Type	Numeric
Value	n
Range
Order In Interpretation	15
Default Value	4

-sb

Bank to use for the select mask

Type	Enum
Value	epc/tid/usr
Range	epc/tid/usr
Order In Interpretation	9
Default Value	epc

-sd

Select mask data in 2 character ASCII Hex bytes padded to ensure full bytes, up to a maximum of 32 bytes.

Type	HEX
Value	xx..zz
Range	Integer number of HEX bytes
Order In Interpretation	12
Default Value

-sl

Length in bits of the select mask, where xx is a 2 character ASCII Hex value

Type	HEX
Value	xx
Range	2 Hex digits
Order In Interpretation	11
Default Value	00

-so

Number of bits from the start of the block to the start of the select mask, where xxxx is a 4 character ASCII Hex value

Type	HEX
Value	xxxx
Range	4 Hex digits
Order In Interpretation	10
Default Value	0000

-st

Select target

Type	Enum
Value	s0,s1,s2,s3,sl
Range	s0/s1/s2/s3/sl
Order In Interpretation	16
Default Value	s2

-wm

Set the Write Mode to either single or block. Block mode is not supported by all transponders

Type	Enum
Value	s/b
Range	s/b
Order In Interpretation	26
Default Value	s

-wx

Impinj Block Write Mode extension. Auto, Force 1 or Force 2 block write. Unless the transponder population is known, use Auto. This option is only valid if wm=b

Type	Enum
Value	a/1/2
Range	a/1/2
Order In Interpretation	27
Default Value	a

-x

Reset the parameters to defaults

Type	Switch
Value
Range
Order In Interpretation	1

Parameter Interpretation Order

-x, -al, -c, -e, -r, -dt, -qm, -ix, -sb,-so, -sl, -sd, -o, -io, -sa, -st, -ql, -qs, -qt, -qv, -dl, -da, -db, -do, -ap, -wm, -wx, -p, -n

Parameter Defaults

-al on, -ap 00000000, -c off, -da, -db usr, -dl 00, -do 0000, -dt off, -e off, -io off, -ix off, -o 29, -ql all, -qm 0, -qs s2, -qt b, -qv 4, -r off, -sa 4, -sb epc, -sd, -sl 00, -so 0000, -st s2, -wm s, -wx a

Response Headers

CR CS DT EA EB EP ER IX ME OK PC PR RI WW

Examples

Command

Response

Action

.wr -p -n

CS: .wr-p-n

PR: -al on -ap 00000000 -c off -da -db usr -dl 00 -do 0000 -dt off -e off -io off -ix off -n -o 29 -p -ql all –qm 0 -qs s2 -qt b -qv 4 -r off -sa 4 -sb epc -sd -sl 00 -so 0000 -st s2 -wm s -wx a -x

OK:

none

.wr -da1234 -dl01

CS: .wr -da1234 -dl01

EP: 310833B2DDD906C000001234

WW: 1

EP: 310833B2DDD906C000001235

WW: 0

EP: 310833B2DDD906C000001236