Lock tag (25h), Release version 1.0.34 – ThingMagic M5e-Compact User Manual

Page 237

Advertising
background image

Release Version 1.0.34

Appendix D: Deprecated and Modified Commands

237

For more information about the MemBank structure and the memory map of the Gen2
tag, please refer to the EPC Global GEN2 protocol specification. This command is not
supported by the EPC1 protocol.

Lock Tag (25h)

The Lock Tag command locks a specific address in the tag data section. The ID of the
tag, the address to lock, and a password for killing the tag need to be provided.

For the GEN2 protocol, the command format is as follows.

The Lock command sends a command sequence including Lock described in the Gen2
specification. The 32-bit Access Password argument must contain the access password
that was written previously to word addresses 0x02 and 0x03 (bit addresses 0x20-0x3F)
of the tag.

The Mask and Action bits correspond to the identically named fields described in Section
6.3.2.10.3.5 of the Gen2 specification. Each of these 10-bit fields is right-aligned (LSB-
aligned) in the corresponding 16-bit argument to the serial command, as shown in the
following table. These fields are passed directly to the tag.

MemBan

k

Description

0x00

Reserved

0x01

EPC

0x02

TID

0x03

User

FF

M + P + 6

25

03 E8

P bytes

00

00

00

08

M bytes

??

??

SO

H

Length

OpCode

Timeout

(ms)

Password

Address

Tag ID (M bytes)

CRC

FF

0A

25

03

E8

11

22

33

44

11

22

11

22

??

??

SOH

Length

OpCode

Timeout (ms)

Access Password

Mask Bits

Action Bits

CRC

Advertising
This manual is related to the following products: