.lo Lock command

This command is used to control access to the memory banks and passwords of the selected transponders. The lock is controlled by a 20 bit lock payload, please refer to the latest UHF Class 1 Gen 2 Standard for details. Care should be taken since some lock actions are permanent.

Android	iOS	.NET
link coming soon	link coming soon	LockTransponderCommand

Parameters

Identifier	Values	Description
-ap	xxxxxxxx	Access password, where xxxxxxxx is an 8 character ASCII Hex value
-c	on/off	Include EPC checksum response
-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
-lp	xxxxx	20 bit Lock command payload where xxxxx is a 5 character ASCII Hex value
-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
-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
-x		Reset the parameters to defaults

Parameter detail

-ap

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

Type	HEX
Value	xxxxxxxx
Range	8 Hex digits
Order In Interpretation	20
Default Value	00000000

-c

Include EPC checksum response

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

-dt

Include date time response

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

-e

Include EPC PC information response

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	3
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	12
Default Value	off

-ix

Index number each transponder response

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

-lp

20 bit Lock command payload where xxxxx is a 5 character ASCII Hex value

Type	HEX
Value	xxxxx
Range	5 Hex digits
Order In Interpretation	19
Default Value	00000

-n

No action, just set the parameters

Type	Switch
Value
Range
Order In Interpretation	22

-o

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

Type	Output power
Value	nn
Range
Order In Interpretation	11
Default Value	29

-p

List the parameter and their current values

Type	Switch
Value
Range
Order In Interpretation	21

-ql

query Select

Type	Enum
Value	all/nsl/sl
Range	all/nsl/sl
Order In Interpretation	15
Default Value	all

-qs

query Session

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

-qt

query Target

Type	Enum
Value	a/b
Range	a/b
Order In Interpretation	17
Default Value	b

-qv

Q value (0..15)

Type	Output power
Value	nn
Range
Order In Interpretation	18
Default Value	2

-r

Include transponder RSSI response

Type	Enum
Value	on/off
Range	on/off
Order In Interpretation	4
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	13
Default Value	4

-sb

Bank to use for the select mask

Type	Enum
Value	epc/tid/usr
Range	epc/tid/usr
Order In Interpretation	7
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	10
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	9
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	8
Default Value	0000

-st

Select target

Type	Enum
Value	s0,s1,s2,s3,sl
Range	s0/s1/s2/s3/sl
Order In Interpretation	14
Default Value	s1

-x

Reset the parameters to defaults

Type	Switch
Value
Range
Order In Interpretation	1

Parameter Interpretation Order

-x, -c, -e, -r, -dt, -ix, -sb,-so, -sl, -sd, -o, -io,-sa, -st, -ql, -qs, -qt, -qv, -lp, -ap, -p, -n

Parameter Defaults

-ap 00000000, -c off, -dt off, -e off, -io off, -ix off, -lp 00000, -o 29, -ql all, -qs s1, -qt b, -qv 2, -r off, -sa 4, -sb epc, -sd, -sl 00, -so 0000, -st s1

Response Headers

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

Examples

Command

Response

Action

.lo -n -p

CS: .lo -n -p

PR: -ap 00000000 -c off -dt off -e off

-io off -ix off -lp 00000 -n -o 29 -p

-ql all -qs s1 -qt b -qv 2 -r off -sa 4

-sb epc -sd -sl 00 -so 0000 -st s1

-x

OK:

No Action

.lo -lp 08020 -ap 00000001

CS: .lo -lp 08020 -ap 00000001

EP: 3005FB63AC1F3681EC880468

LS: Lock Success

OK:

EPC memory bank lock is set so it is writable only in the secured state

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